![Frankfurt airport hub map v2](https://upload.wikimedia.org/wikipedia/commons/8/86/Frankfurt_airport_hub_map_v2.png)
An airline hub or hub airport is an
airport
An airport is an aerodrome with extended facilities, mostly for commercial air transport. Airports usually consists of a landing area, which comprises an aerially accessible open space including at least one operationally active surface ...
used by one or more
airline
An airline is a company that provides civil aviation, air transport services for traveling passengers and freight. Airlines use aircraft to supply these services and may form partnerships or Airline alliance, alliances with other airlines for ...
s to concentrate passenger traffic and flight operations. Hubs serve as transfer (or stop-over) points to help get passengers to their final destination. It is part of the
hub-and-spoke system. An airline may operate flights from several non-hub (spoke) cities to the hub airport, and passengers traveling between spoke cities connect through the hub. This paradigm creates
economies of scale
In microeconomics, economies of scale are the cost advantages that enterprises obtain due to their scale of operation, and are typically measured by the amount of output produced per unit of time. A decrease in cost per unit of output enables ...
that allow an airline to serve (via an intermediate connection) city-pairs that could otherwise not be economically served on a
non-stop basis. This system contrasts with the
point-to-point model, in which there are no hubs and nonstop flights are instead offered between spoke cities. Hub airports also serve origin and destination (O&D) traffic.
Operations
![Heathrow Terminal 5C Iwelumo-1](https://upload.wikimedia.org/wikipedia/commons/1/1c/Heathrow_Terminal_5C_Iwelumo-1.jpg)
The hub-and-spoke system allows an airline to serve fewer routes, so fewer aircraft are needed.
The system also increases passenger loads; a flight from a hub to a spoke carries not just passengers originating at the hub, but also passengers originating at multiple spoke cities.
However, the system is costly. Additional employees and facilities are needed to cater to connecting passengers. To serve spoke cities of varying populations and demand, an airline requires several aircraft types, and specific training and equipment are necessary for each type.
In addition, airlines may experience capacity constraints as they expand at their hub airports.
For the passenger, the hub-and-spoke system offers one-stop air service to a wide array of destinations.
However, it requires having to regularly make connections en route to their final destination, which increases travel time.
Additionally, airlines can come to monopolise their hubs (fortress hubs), allowing them to freely increase fares as passengers have no alternative.
High domestic connectivity in the United States is achieved through airport location and hub dominance. The top 10 megahubs in the US are dominated by
American Airlines
American Airlines is a major airlines of the United States, major US-based airline headquartered in Fort Worth, Texas, within the Dallas–Fort Worth metroplex. It is the Largest airlines in the world, largest airline in the world when measured ...
,
Delta Air Lines
Delta Air Lines, Inc., typically referred to as Delta, is one of the major airlines of the United States and a legacy carrier. One of the List of airlines by foundation date, world's oldest airlines in operation, Delta is headquartered in Atla ...
and
United Airlines
United Airlines, Inc. (commonly referred to as United), is a major American airline headquartered at the Willis Tower in Chicago, Illinois. , the three largest United States-based airlines.
Banking
Airlines may operate banks of flights at their hubs, in which several flights arrive and depart within short periods of time. The banks may be known as "peaks" of activity at the hubs and the non-banks as "valleys". Banking allows for short connection times for passengers.
However, an airline must assemble many resources to cater to the influx of flights during a bank, and having several aircraft on the ground at the same time can lead to congestion and delays.
In addition, banking could result in inefficient aircraft utilisation, with aircraft waiting at spoke cities for the next bank.
Instead, some airlines have debanked their hubs, introducing a "rolling hub" in which flight arrivals and departures are spread throughout the day. This phenomenon is also known as "depeaking".
While costs may decrease, connection times are longer at a rolling hub.
American Airlines
American Airlines is a major airlines of the United States, major US-based airline headquartered in Fort Worth, Texas, within the Dallas–Fort Worth metroplex. It is the Largest airlines in the world, largest airline in the world when measured ...
was the first to depeak its hubs,
trying to improve profitability following the
September 11 attacks
The September 11 attacks, commonly known as 9/11, were four coordinated suicide terrorist attacks carried out by al-Qaeda against the United States on Tuesday, September 11, 2001. That morning, nineteen terrorists hijacked four commercia ...
.
It rebanked its hubs in 2015, however, feeling the gain in connecting passengers would outweigh the rise in costs.
For example, the hub of
Qatar Airways
Qatar Airways Company Q.C.S.C. ( ar, القطرية, ''al-Qaṭariya''), operating as Qatar Airways, is the state-owned flag carrier airline of Qatar. Headquartered in the Qatar Airways Tower in Doha, the airline operates a hub-and-spoke netw ...
in
Doha Airport
Hamad International Airport ( ar, مطار حمد الدولي, ') is an international airport in the State of Qatar, and the home of Qatar’s flag carrier airline, Qatar Airways. Located east of its capital, Doha, it replaced the nearby Doha ...
has 471 daily movements to 140 destinations by March 2020 with an average of 262 seats per movement; in three main waves: 5h-9h (132 movements), 16h-21h (128) and 23h-3h (132), allowing around 30 million connecting passengers in 2019.
History
United States
Before the US airline industry was
deregulated
Deregulation is the process of removing or reducing state regulations, typically in the economic sphere. It is the repeal of governmental regulation of the economy. It became common in advanced industrial economies in the 1970s and 1980s, as a ...
in 1978, most airlines operated under the
point-to-point system (with a notable exception being
Pan Am
Pan American World Airways, originally founded as Pan American Airways and commonly known as Pan Am, was an American airline that was the principal and largest international air carrier and unofficial overseas flag carrier of the United States ...
).
The
Civil Aeronautics Board
The Civil Aeronautics Board (CAB) was an agency of the federal government of the United States, formed in 1938 and abolished in 1985, that regulated aviation services including scheduled passenger airline serviceStringer, David H."Non-Skeds: T ...
dictated which routes an airline could fly. At the same time, however, some airlines began to experiment with the hub-and-spoke system.
Delta Air Lines
Delta Air Lines, Inc., typically referred to as Delta, is one of the major airlines of the United States and a legacy carrier. One of the List of airlines by foundation date, world's oldest airlines in operation, Delta is headquartered in Atla ...
was the first to implement such a system, providing service to remote spoke cities from its
Atlanta
Atlanta ( ) is the capital and most populous city of the U.S. state of Georgia. It is the seat of Fulton County, the most populous county in Georgia, but its territory falls in both Fulton and DeKalb counties. With a population of 498,715 ...
hub.
After deregulation, many airlines quickly established hub-and-spoke route networks of their own.
Middle East
![Emirates tails (8499979565)](https://upload.wikimedia.org/wikipedia/commons/8/81/Emirates_tails_%288499979565%29.jpg)
In 1974, the governments of
Bahrain
Bahrain ( ; ; ar, البحرين, al-Bahrayn, locally ), officially the Kingdom of Bahrain, ' is an island country in Western Asia. It is situated on the Persian Gulf, and comprises a small archipelago made up of 50 natural islands and an ...
,
Oman
Oman ( ; ar, عُمَان ' ), officially the Sultanate of Oman ( ar, سلْطنةُ عُمان ), is an Arabian country located in southwestern Asia. It is situated on the southeastern coast of the Arabian Peninsula, and spans the mouth of t ...
,
Qatar
Qatar (, ; ar, قطر, Qaṭar ; local vernacular pronunciation: ), officially the State of Qatar,) is a country in Western Asia. It occupies the Qatar Peninsula on the northeastern coast of the Arabian Peninsula in the Middle East; it sh ...
and the
United Arab Emirates
The United Arab Emirates (UAE; ar, اَلْإِمَارَات الْعَرَبِيَة الْمُتَحِدَة ), or simply the Emirates ( ar, الِْإمَارَات ), is a country in Western Asia (The Middle East). It is located at th ...
took control of
Gulf Air
Gulf Air ( ar, طيران الخليج ''Ṭayarān al-Khalīj'') is the state-owned airline and the flag carrier of Bahrain, which was founded in 1950 by British Pilot Freddie Bosworth as Gulf Aviation. Headquartered in Muharraq, the airli ...
from the
British Overseas Airways Corporation
British Overseas Airways Corporation (BOAC) was the British state-owned airline created in 1939 by the merger of Imperial Airways and British Airways Ltd. It continued operating overseas services throughout World War II. After the passi ...
(BOAC). Gulf Air became the
flag carrier
A flag carrier is a transport company, such as an airline or shipping company, that, being locally registered in a given sovereign state, enjoys preferential rights or privileges accorded by the government for international operations.
Hist ...
of the four Middle Eastern nations. It linked Oman, Qatar and the UAE to its Bahrain hub, from which it offered flights to destinations throughout Europe and Asia. In the UAE, Gulf Air focused on
Abu Dhabi
Abu Dhabi (, ; ar, أَبُو ظَبْيٍ ' ) is the capital and second-most populous city (after Dubai) of the United Arab Emirates. It is also the capital of the Emirate of Abu Dhabi and the centre of the Abu Dhabi Metropolitan Area.
...
rather than
Dubai
Dubai (, ; ar, دبي, translit=Dubayy, , ) is the most populous city in the United Arab Emirates (UAE) and the capital of the Emirate of Dubai, the most populated of the 7 emirates of the United Arab Emirates.The Government and Politics of ...
, contrary to the aspirations of UAE Prime Minister
Mohammed bin Rashid Al Maktoum
Sheikh Mohammed bin Rashid Al Maktoum ( ar, محمد بن راشد آل مكتوم, links=no; ; born 15 July 1949) is the vice president, prime minister, and minister of defence of the United Arab Emirates (UAE) as well as the ruler of Dubai ...
to transform the latter into a world-class metropolis. Sheikh Mohammed proceeded to establish a new airline based in Dubai,
Emirates
Emirates may refer to:
* United Arab Emirates, a Middle Eastern country
* Emirate, any territory ruled by an emir
** Gulf emirates, emirates located on the Persian Gulf
** Emirates of the United Arab Emirates, the individual emirates
* The Emirat ...
, which launched operations in 1985.
Elsewhere in the Middle East region, Qatar and Oman decided to create their own airlines as well.
Qatar Airways
Qatar Airways Company Q.C.S.C. ( ar, القطرية, ''al-Qaṭariya''), operating as Qatar Airways, is the state-owned flag carrier airline of Qatar. Headquartered in the Qatar Airways Tower in Doha, the airline operates a hub-and-spoke netw ...
and
Oman Air
Oman Air ( ar, الطيران العماني) is the national airline of the Sultanate of Oman. Based at Muscat International Airport in Seeb, Muscat, it operates domestic and international passenger services, as well as regional air taxi and ch ...
were both founded in 1993, with hubs at
Doha
Doha ( ar, الدوحة, ad-Dawḥa or ''ad-Dōḥa'') is the capital city and main financial hub of Qatar. Located on the Persian Gulf coast in the east of the country, north of Al Wakrah and south of Al Khor, it is home to most of the coun ...
and
Muscat
Muscat ( ar, مَسْقَط, ) is the capital and most populated city in Oman
Oman ( ; ar, عُمَان ' ), officially the Sultanate of Oman ( ar, سلْطنةُ عُمان ), is an Arabian country located in southwestern Asia. It is s ...
respectively. As the new airlines grew, their home nations relied less on Gulf Air to provide air service. Qatar withdrew its share in Gulf Air in 2002. In 2003, the UAE formed another national airline,
Etihad Airways, which is based in Abu Dhabi. The country exited Gulf Air in 2006, and Oman followed in 2007.
Gulf Air therefore became fully owned by the government of Bahrain.
Emirates
Emirates may refer to:
* United Arab Emirates, a Middle Eastern country
* Emirate, any territory ruled by an emir
** Gulf emirates, emirates located on the Persian Gulf
** Emirates of the United Arab Emirates, the individual emirates
* The Emirat ...
,
Qatar Airways
Qatar Airways Company Q.C.S.C. ( ar, القطرية, ''al-Qaṭariya''), operating as Qatar Airways, is the state-owned flag carrier airline of Qatar. Headquartered in the Qatar Airways Tower in Doha, the airline operates a hub-and-spoke netw ...
,
Saudia and
Etihad Airways have since established large hubs at their respective home airports. The hubs, which benefit from their proximity to large population centres,
have become popular stopover points on trips between Europe and Asia, for example. Their rapid growth has impacted the development of traditional hubs, such as
London
London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a majo ...
,
Paris
Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. S ...
, and
New York City
New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...
.
Types of hubs
Cargo hubs and scissor hubs
A cargo hub is an airport that primarily is operated by a
cargo airline
Cargo airlines (or air freight carriers, and derivatives of these names) are airlines mainly dedicated to the transport of air cargo, cargo by air. Some cargo airlines are divisions or subsidiaries of larger passenger airlines.
In 2018, airline ...
that uses the hub-and-spoke system. In the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
, the largest cargo hub airports are traditionally in the
midwest
The Midwestern United States, also referred to as the Midwest or the American Midwest, is one of four Census Bureau Region, census regions of the United States Census Bureau (also known as "Region 2"). It occupies the northern central part of ...
for domestic service, like
FedEx's
Memphis Superhub or
UPS
UPS or ups may refer to:
Companies and organizations
* United Parcel Service, an American shipping company
** The UPS Store, UPS subsidiary
** UPS Airlines, UPS subsidiary
* Underground Press Syndicate, later ''Alternative Press Syndicate'' or ...
Louisville Worldport. FedEx's airline,
FedEx Express
FedEx Express, a subsidiary of FedEx Corporation, is a major American cargo airline based in Memphis, Tennessee, United States. As of 2020, it is one of the world's largest airlines in terms of fleet size and freight tons flown. It is the na ...
, established its Memphis hub in 1973, prior to the deregulation of the air cargo industry in the United States. The system has created an efficient delivery system for the airline.
UPS Airlines
UPS Airlines is a major American cargo airline based in Louisville, Kentucky. The second-largest cargo airline worldwide ( in terms of freight volume flown), UPS Airlines flies to 815 destinations worldwide. A wholly owned subsidiary of UPS (Unit ...
has followed a similar pattern in Louisville. In Europe,
TNT Airways
Trinitrotoluene (), more commonly known as TNT, more specifically 2,4,6-trinitrotoluene, and by its preferred IUPAC name 2-methyl-1,3,5-trinitrobenzene, is a chemical compound with the formula C6H2(NO2)3CH3. TNT is occasionally used as a reagen ...
,
Cargolux
Cargolux, legally ''Cargolux Airlines International S.A.'', is a Luxembourgian flag carrier cargo airline with its headquarters and hub at Luxembourg Airport. With a global network, it is one of the largest scheduled all-cargo airlines in Euro ...
and
DHL Aviation follow a similar strategy and operate their primary hubs at
Liège
Liège ( , , ; wa, Lîdje ; nl, Luik ; german: Lüttich ) is a major city and municipality of Wallonia and the capital of the Belgian province of Liège.
The city is situated in the valley of the Meuse, in the east of Belgium, not far from b ...
,
Luxembourg
Luxembourg ( ; lb, Lëtzebuerg ; french: link=no, Luxembourg; german: link=no, Luxemburg), officially the Grand Duchy of Luxembourg, ; french: link=no, Grand-Duché de Luxembourg ; german: link=no, Großherzogtum Luxemburg is a small lan ...
and
Leipzig
Leipzig ( , ; Upper Saxon: ) is the most populous city in the German state of Saxony. Leipzig's population of 605,407 inhabitants (1.1 million in the larger urban zone) as of 2021 places the city as Germany's eighth most populous, as wel ...
respectively.
Additionally,
Ted Stevens International Airport
Ted Stevens Anchorage International Airport is a major airport in the U.S. state of Alaska, located southwest of downtown Anchorage. The airport is named for Ted Stevens, a U.S. senator from Alaska in office from 1968 to 2009. It is include ...
in
Anchorage, Alaska
Anchorage () is the largest city in the U.S. state of Alaska by population. With a population of 291,247 in 2020, it contains nearly 40% of the state's population. The Anchorage metropolitan area, which includes Anchorage and the neighboring Ma ...
is a frequent stop-over hub for many cargo airlines flying between Asia and North America. Most cargo airlines only stop in Anchorage for refueling and customs, but FedEx and UPS frequently use Anchorage to sort trans-pacific packages between regional hubs on each continent in addition to refueling and customs.
Passenger airlines that operate in a similar manner to the FedEx and UPS hubs are often regarded as scissor hubs, as many flights to one destination all land and deplane passengers simultaneously and, after a passenger transit period, repeat a similar process for departure to the final destination of each plane.
Air India
Air India is the flag carrier airline of India, headquartered at New Delhi. It is owned by Talace Private Limited, a Special-Purpose Vehicle (SPV) of Tata Sons, after Air India Limited's former owner, the Government of India, completed the ...
operates a scissor hub at London's
Heathrow Airport
Heathrow Airport (), called ''London Airport'' until 1966 and now known as London Heathrow , is a major international airport in London, England. It is the largest of the six international airports in the London airport system (the others be ...
, where passengers from
Delhi
Delhi, officially the National Capital Territory (NCT) of Delhi, is a city and a union territory of India containing New Delhi, the capital of India. Straddling the Yamuna river, primarily its western or right bank, Delhi shares borders w ...
,
Ahmedabad
Ahmedabad ( ; Gujarati: Amdavad ) is the most populous city in the Indian state of Gujarat. It is the administrative headquarters of the Ahmedabad district and the seat of the Gujarat High Court. Ahmedabad's population of 5,570,585 (per t ...
, and
Mumbai
Mumbai (, ; also known as Bombay — the official name until 1995) is the capital city of the Indian state of Maharashtra and the ''de facto'' financial centre of India. According to the United Nations, as of 2018, Mumbai is the second- ...
can continue onto a flight to
Newark
Newark most commonly refers to:
* Newark, New Jersey, city in the United States
* Newark Liberty International Airport, New Jersey; a major air hub in the New York metropolitan area
Newark may also refer to:
Places Canada
* Niagara-on-the ...
. Until its grounding,
Jet Airways
Jet Airways (India) Ltd is an Indian airline based in Delhi NCR, with a training and developmental center in Mumbai. Incorporated in April 1992 as a limited liability company, the airline began operations as an air taxi operator in 1993. It b ...
operated a similar scissor hub at
Amsterdam Airport Schiphol
Amsterdam Airport Schiphol , known informally as Schiphol Airport ( nl, Luchthaven Schiphol, ), is the main international airport of the Netherlands. It is located southwest of Amsterdam, in the municipality of Haarlemmermeer in the province ...
to transport passengers from
Bangalore
Bangalore (), officially Bengaluru (), is the capital and largest city of the Indian state of Karnataka. It has a population of more than and a metropolitan population of around , making it the third most populous city and fifth most ...
,
Mumbai
Mumbai (, ; also known as Bombay — the official name until 1995) is the capital city of the Indian state of Maharashtra and the ''de facto'' financial centre of India. According to the United Nations, as of 2018, Mumbai is the second- ...
and
Delhi
Delhi, officially the National Capital Territory (NCT) of Delhi, is a city and a union territory of India containing New Delhi, the capital of India. Straddling the Yamuna river, primarily its western or right bank, Delhi shares borders w ...
to
Toronto-Pearson and vice versa. At the peak of operations at their former scissor hub at
Brussels
Brussels (french: Bruxelles or ; nl, Brussel ), officially the Brussels-Capital Region (All text and all but one graphic show the English name as Brussels-Capital Region.) (french: link=no, Région de Bruxelles-Capitale; nl, link=no, Bruss ...
prior to the 2016 shift to Schiphol, flights operated from Mumbai, Delhi, and
Chennai
Chennai (, ), formerly known as Madras ( the official name until 1996), is the capital city of Tamil Nadu, the southernmost Indian state. The largest city of the state in area and population, Chennai is located on the Coromandel Coast of th ...
and continued onward to Toronto,
New York, and
Newark
Newark most commonly refers to:
* Newark, New Jersey, city in the United States
* Newark Liberty International Airport, New Jersey; a major air hub in the New York metropolitan area
Newark may also refer to:
Places Canada
* Niagara-on-the ...
after a near-simultaneous stopover in Brussels and vice versa. An international scissor hub could be used for
third and fourth freedom flights or it could be used for
fifth freedom flights, for which a precursor is a
bilateral treaty A bilateral treaty (also called a bipartite treaty) is a treaty strictly between two Sovereign state, state entities. It is an agreement made by negotiations between two parties, established in writing and signed by representatives of the parties. T ...
between two country pairs.
WestJet
WestJet Airlines Ltd. is a Canadian airline headquartered in Calgary, Alberta, near Calgary International Airport. It is the second-largest Canadian airline, behind Air Canada, operating an average of 777 flights and carrying more than 66,130 ...
uses
St. John's as a scissor hub during its summer schedule for flights inbound from
Ottawa
Ottawa (, ; Canadian French: ) is the capital city of Canada. It is located at the confluence of the Ottawa River and the Rideau River in the southern portion of the province of Ontario. Ottawa borders Gatineau, Quebec, and forms the core ...
,
Toronto
Toronto ( ; or ) is the capital city of the Canadian province of Ontario. With a recorded population of 2,794,356 in 2021, it is the most populous city in Canada and the fourth most populous city in North America. The city is the ancho ...
, and
Orlando
Orlando () is a city in the U.S. state of Florida and is the county seat of Orange County. In Central Florida, it is the center of the Orlando metropolitan area, which had a population of 2,509,831, according to U.S. Census Bureau figures re ...
and outbound to
Dublin
Dublin (; , or ) is the capital and largest city of Republic of Ireland, Ireland. On a bay at the mouth of the River Liffey, it is in the Provinces of Ireland, province of Leinster, bordered on the south by the Dublin Mountains, a part of th ...
and
London–Gatwick. At
Los Angeles International Airport,
Qantas
Qantas Airways Limited ( ) is the flag carrier of Australia and the country's largest airline by fleet size, international flights, and international destinations. It is the world's third-oldest airline still in operation, having been founded ...
passengers from Melbourne, Brisbane or Sydney may transfer onto a flight to
New York–JFK and vice versa.
Focus city
![Airbus A320-232, JetBlue Airways AN0529077](https://upload.wikimedia.org/wikipedia/commons/e/e7/Airbus_A320-232%2C_JetBlue_Airways_AN0529077.jpg)
In the
airline
An airline is a company that provides civil aviation, air transport services for traveling passengers and freight. Airlines use aircraft to supply these services and may form partnerships or Airline alliance, alliances with other airlines for ...
industry, a focus city is a destination from which an airline operates limited
point-to-point routes.
Ergo, a focus city primarily caters to the local market rather than to connecting passengers.
Although the term ''focus city'' is used to mainly refer to an airport from which an airline operates limited point-to-point routes, its usage has loosely expanded to refer to a small-scale hub as well. For example,
JetBlue
JetBlue Airways Corporation (stylized as jetBlue) is a major American low cost airline, and the seventh largest airline in North America by passengers carried. The airline is headquartered in the Long Island City neighborhood of the New York C ...
's
New York–JFK focus city runs like a hub, although it is still deemed by JetBlue as a focus city.
Fortress hub
A fortress hub exists when an airline controls a significant majority of the market at one of its hubs. Competition is particularly difficult at fortress hubs. Examples include
Delta Air Lines
Delta Air Lines, Inc., typically referred to as Delta, is one of the major airlines of the United States and a legacy carrier. One of the List of airlines by foundation date, world's oldest airlines in operation, Delta is headquartered in Atla ...
at
Atlanta
Atlanta ( ) is the capital and most populous city of the U.S. state of Georgia. It is the seat of Fulton County, the most populous county in Georgia, but its territory falls in both Fulton and DeKalb counties. With a population of 498,715 ...
,
Detroit
Detroit ( , ; , ) is the largest city in the U.S. state of Michigan. It is also the largest U.S. city on the United States–Canada border, and the seat of government of Wayne County. The City of Detroit had a population of 639,111 at th ...
, and
Minneapolis/St. Paul,
American Airlines
American Airlines is a major airlines of the United States, major US-based airline headquartered in Fort Worth, Texas, within the Dallas–Fort Worth metroplex. It is the Largest airlines in the world, largest airline in the world when measured ...
at
Charlotte
Charlotte ( ) is the most populous city in the U.S. state of North Carolina. Located in the Piedmont region, it is the county seat of Mecklenburg County. The population was 874,579 at the 2020 census, making Charlotte the 16th-most populo ...
and
Dallas/Fort Worth, and
United Airlines
United Airlines, Inc. (commonly referred to as United), is a major American airline headquartered at the Willis Tower in Chicago, Illinois. at
Houston–Intercontinental,
Newark
Newark most commonly refers to:
* Newark, New Jersey, city in the United States
* Newark Liberty International Airport, New Jersey; a major air hub in the New York metropolitan area
Newark may also refer to:
Places Canada
* Niagara-on-the ...
and
Washington-Dulles
Washington Dulles International Airport , typically referred to as Dulles International Airport, Dulles Airport, Washington Dulles, or simply Dulles ( ), is an international airport in the Eastern United States, located in Loudoun County and Fa ...
.
Flag carrier
A flag carrier is a transport company, such as an airline or shipping company, that, being locally registered in a given sovereign state, enjoys preferential rights or privileges accorded by the government for international operations.
Hist ...
s have historically enjoyed similar dominance at the main international airport of their countries and some still do. Examples include
Aeromexico in
Mexico City
Mexico City ( es, link=no, Ciudad de México, ; abbr.: CDMX; Nahuatl: ''Altepetl Mexico'') is the capital and largest city of Mexico, and the most populous city in North America. One of the world's alpha cities, it is located in the Valley o ...
,
Air Canada
Air Canada is the flag carrier and the largest airline of Canada by the size and passengers carried. Air Canada maintains its headquarters in the borough of Saint-Laurent, Montreal, Quebec. The airline, founded in 1937, provides scheduled an ...
in
Toronto–Pearson,
Air France
Air France (; formally ''Société Air France, S.A.''), stylised as AIRFRANCE, is the flag carrier of France headquartered in Tremblay-en-France. It is a subsidiary of the Air France–KLM Group and a founding member of the SkyTeam global air ...
in
Paris–Charles de Gaulle
Paris Charles de Gaulle Airport (french: Aéroport de Paris-Charles-de-Gaulle, ), also known as Roissy Airport or simply Paris CDG, is the principal airport serving the French capital, Paris ( and its metropolitan area), and the largest intern ...
,
British Airways
British Airways (BA) is the flag carrier airline of the United Kingdom. It is headquartered in London
London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a populati ...
in
London–Heathrow,
Cathay Pacific
Cathay Pacific Airways Limited (CPA), more widely known as Cathay Pacific (), is the flag carrier of Hong Kong, with its head office and main hub located at Hong Kong International Airport. The airline's operations and subsidiaries have sc ...
in
Hong Kong
Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China ( abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delt ...
,
Copa Airlines
Compañía Panameña de Aviación, S.A., (commonly referred to as Copa and branded simply as "Copa Airlines") is the flag carrier of Panama. It is headquartered in Panama City, Panama, with its main hub at Tocumen International Airport. Copa is ...
in
Panama City
Panama City ( es, Ciudad de Panamá, links=no; ), also known as Panama (or Panamá in Spanish), is the capital and largest city of Panama. It has an urban population of 880,691, with over 1.5 million in its metropolitan area. The city is locat ...
,
Emirates
Emirates may refer to:
* United Arab Emirates, a Middle Eastern country
* Emirate, any territory ruled by an emir
** Gulf emirates, emirates located on the Persian Gulf
** Emirates of the United Arab Emirates, the individual emirates
* The Emirat ...
in
Dubai
Dubai (, ; ar, دبي, translit=Dubayy, , ) is the most populous city in the United Arab Emirates (UAE) and the capital of the Emirate of Dubai, the most populated of the 7 emirates of the United Arab Emirates.The Government and Politics of ...
,
Ethiopian Airlines
Ethiopian Airlines (commonly referred to as Ethiopian; am, የኢትዮጵያ አየር መንገድ, translit=Ye-Ītyōṗṗyā āyer menged), formerly ''Ethiopian Air Lines'' (EAL), is the flag carrier of Ethiopia, and is wholly owned by ...
in
Addis Ababa
Addis Ababa (; am, አዲስ አበባ, , new flower ; also known as , lit. "natural spring" in Oromo), is the capital and largest city of Ethiopia. It is also served as major administrative center of the Oromia Region. In the 2007 census, t ...
,
Finnair
Finnair ( fi, Finnair Oyj, sv, Finnair Abp) is the flag carrier and largest airline of Finland, with its headquarters in Vantaa on the grounds of Helsinki Airport, its hub. Finnair and its subsidiaries dominate both domestic and international ...
in
Helsinki
Helsinki ( or ; ; sv, Helsingfors, ) is the Capital city, capital, primate city, primate, and List of cities and towns in Finland, most populous city of Finland. Located on the shore of the Gulf of Finland, it is the seat of the region of U ...
,
Iberia
The Iberian Peninsula (),
**
* Aragonese and Occitan: ''Peninsula Iberica''
**
**
* french: Péninsule Ibérique
* mwl, Península Eibérica
* eu, Iberiar penintsula also known as Iberia, is a peninsula in southwestern Europe, defi ...
in
Madrid
Madrid ( , ) is the capital and most populous city of Spain. The city has almost 3.4 million inhabitants and a metropolitan area population of approximately 6.7 million. It is the second-largest city in the European Union (EU), and ...
,
Korean Air
Korean Air Co., Ltd. (), operating as Korean Air (Korean Air Lines before 1984), is the flag carrier of South Korea and its largest airline based on fleet size, international destinations and international flights.
The present-day Korean Air ...
at
Seoul–Incheon,
KLM
KLM Royal Dutch Airlines, legally ''Koninklijke Luchtvaart Maatschappij N.V.'' (literal translation: Royal Aviation Company Plc.), is the flag carrier airline of the Netherlands. KLM is headquartered in Amstelveen, with its hub at nearby Amste ...
in
Amsterdam
Amsterdam ( , , , lit. ''The Dam on the River Amstel'') is the Capital of the Netherlands, capital and Municipalities of the Netherlands, most populous city of the Netherlands, with The Hague being the seat of government. It has a population ...
,
Lufthansa
Deutsche Lufthansa AG (), commonly shortened to Lufthansa, is the flag carrier of Germany. When combined with its subsidiaries, it is the second- largest airline in Europe in terms of passengers carried. Lufthansa is one of the five founding m ...
in
Frankfurt
Frankfurt, officially Frankfurt am Main (; Hessian: , "Frank ford on the Main"), is the most populous city in the German state of Hesse. Its 791,000 inhabitants as of 2022 make it the fifth-most populous city in Germany. Located on its na ...
,
Qantas
Qantas Airways Limited ( ) is the flag carrier of Australia and the country's largest airline by fleet size, international flights, and international destinations. It is the world's third-oldest airline still in operation, having been founded ...
in
Sydney
Sydney ( ) is the capital city of the state of New South Wales, and the most populous city in both Australia and Oceania. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about towards the Blue Mountain ...
,
Qatar Airways
Qatar Airways Company Q.C.S.C. ( ar, القطرية, ''al-Qaṭariya''), operating as Qatar Airways, is the state-owned flag carrier airline of Qatar. Headquartered in the Qatar Airways Tower in Doha, the airline operates a hub-and-spoke netw ...
in
Doha
Doha ( ar, الدوحة, ad-Dawḥa or ''ad-Dōḥa'') is the capital city and main financial hub of Qatar. Located on the Persian Gulf coast in the east of the country, north of Al Wakrah and south of Al Khor, it is home to most of the coun ...
,
Singapore Airlines
Singapore Airlines (abbreviation: SIA) is the flag carrier airline of the Republic of Singapore with its Airline hub, hub located at Singapore Changi Airport. The airline is notable for highlighting the Singapore Girl as its central figure in ...
in
Singapore
Singapore (), officially the Republic of Singapore, is a sovereign island country and city-state in maritime Southeast Asia. It lies about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, borde ...
,
South African Airways in
Johannesburg
Johannesburg ( , , ; Zulu and xh, eGoli ), colloquially known as Jozi, Joburg, or "The City of Gold", is the largest city in South Africa, classified as a megacity, and is one of the 100 largest urban areas in the world. According to Demo ...
,
Swiss International Air Lines
Swiss International Air Lines AG, colloquially known as SWISS, is the flag carrier of Switzerland, operating scheduled services in Europe and to North America, South America, Africa and Asia. Zurich Airport serves as its sole hub and Geneva ...
in
Zurich, and
Turkish Airlines
Turkish Airlines ( Turkish: ''Türk Hava Yolları'') is the national flag carrier airline of Turkey. , it operates scheduled services to 340 destinations in Europe, Asia, Africa, and the Americas, making it the largest mainline carrier in the w ...
in
Istanbul
Istanbul ( , ; tr, İstanbul ), formerly known as Constantinople ( grc-gre, Κωνσταντινούπολις; la, Constantinopolis), is the List of largest cities and towns in Turkey, largest city in Turkey, serving as the country's economic, ...
.
Primary and secondary hubs
A primary hub is the main hub for an airline. However, as an airline expands operations at its primary hub to the point that it experiences capacity limitations, it may elect to open secondary hubs. Examples of such hubs are
British Airways
British Airways (BA) is the flag carrier airline of the United Kingdom. It is headquartered in London
London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a populati ...
' hub at
London–Gatwick,
Air India
Air India is the flag carrier airline of India, headquartered at New Delhi. It is owned by Talace Private Limited, a Special-Purpose Vehicle (SPV) of Tata Sons, after Air India Limited's former owner, the Government of India, completed the ...
's hub at
Mumbai
Mumbai (, ; also known as Bombay — the official name until 1995) is the capital city of the Indian state of Maharashtra and the ''de facto'' financial centre of India. According to the United Nations, as of 2018, Mumbai is the second- ...
and
Lufthansa
Deutsche Lufthansa AG (), commonly shortened to Lufthansa, is the flag carrier of Germany. When combined with its subsidiaries, it is the second- largest airline in Europe in terms of passengers carried. Lufthansa is one of the five founding m ...
's hub at
Munich
Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of the States of Germany, German state of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the List of cities in Germany by popu ...
. By operating multiple hubs, airlines can expand their geographic reach.
They can also better serve spoke–spoke markets, providing more itineraries with connections at different hubs.
Cargo airlines like
FedEx Express
FedEx Express, a subsidiary of FedEx Corporation, is a major American cargo airline based in Memphis, Tennessee, United States. As of 2020, it is one of the world's largest airlines in terms of fleet size and freight tons flown. It is the na ...
and
UPS Airlines
UPS Airlines is a major American cargo airline based in Louisville, Kentucky. The second-largest cargo airline worldwide ( in terms of freight volume flown), UPS Airlines flies to 815 destinations worldwide. A wholly owned subsidiary of UPS (Unit ...
also operate secondary hubs to an extent, but these are primarily used to serve regional high-demand destinations because shipping packages through its main hub would waste fuel; an example of this would be FedEx transiting a package through
Oakland International Airport
Oakland International Airport is an international airport in Oakland, California, United States, 10 miles (16 km) south of downtown located in the San Francisco Bay Area. It is owned by the Port of Oakland and has domestic passenger f ...
when shipping packages between destinations near
Seattle
Seattle ( ) is a seaport city on the West Coast of the United States. It is the seat of King County, Washington. With a 2020 population of 737,015, it is the largest city in both the state of Washington and the Pacific Northwest regio ...
and
Phoenix, Arizona
Phoenix ( ; nv, Hoozdo; es, Fénix or , yuf-x-wal, Banyà:nyuwá) is the List of capitals in the United States, capital and List of cities and towns in Arizona#List of cities and towns, most populous city of the U.S. state of Arizona, with 1 ...
instead of sending deliveries through the
Memphis Superhub.
Reliever hub
A given hub's capacity may become exhausted or capacity shortages may occur during peak periods of the day, at which point airlines may be compelled to shift traffic to a reliever hub. A reliever hub has the potential to serve several functions for an airline: it can bypass the congested hub, it can absorb excess demand for flights that could otherwise not be scheduled at the congested hub, and it can schedule new O&D city pairs for connecting traffic.
One of the most recognized examples of this model is
Delta Air Lines
Delta Air Lines, Inc., typically referred to as Delta, is one of the major airlines of the United States and a legacy carrier. One of the List of airlines by foundation date, world's oldest airlines in operation, Delta is headquartered in Atla ...
' and
American Airlines
American Airlines is a major airlines of the United States, major US-based airline headquartered in Fort Worth, Texas, within the Dallas–Fort Worth metroplex. It is the Largest airlines in the world, largest airline in the world when measured ...
' uses of
LaGuardia Airport
LaGuardia Airport is a civil airport in East Elmhurst, Queens, New York City. Covering , the facility was established in 1929 and began operating as a public airport in 1939. It is named after former New York City mayor Fiorello La Guardia. ...
as a domestic hub in
New York City
New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...
, due to capacity and slot restrictions at their hubs at
John F. Kennedy International Airport
John F. Kennedy International Airport (colloquially referred to as JFK Airport, Kennedy Airport, New York-JFK, or simply JFK) is the main international airport serving New York City. The airport is the busiest of the seven airports in the Avia ...
. Many regional flights operate out of LaGuardia, while most international flights remain at JFK.
Lufthansa
Deutsche Lufthansa AG (), commonly shortened to Lufthansa, is the flag carrier of Germany. When combined with its subsidiaries, it is the second- largest airline in Europe in terms of passengers carried. Lufthansa is one of the five founding m ...
operates a similar model of business with its hubs at
Frankfurt Airport
Frankfurt Airport (; german: link=no, Flughafen Frankfurt Main , also known as ''Rhein-Main-Flughafen'') is a major international airport located in Frankfurt, the fifth-largest city of Germany and one of the world's leading financial centres ...
and
Munich Airport
Munich International Airport- Franz Josef Strauß (german: link=no, Flughafen München) is an international airport serving Munich and Upper Bavaria. It is the second-busiest airport in Germany in terms of passenger traffic after Frankfurt A ...
. Generally speaking, a marginal majority of its long-haul flights going to or from Germany have the German terminus of the flight at Frankfurt, while a similarly-sized but smaller minority have their German terminus at Munich.
Moonlight hub
In past history, carriers have maintained niche, time-of-day operations at hubs. The most notable was
America West
America West Airlines was a major American airline, founded in 1981, with service commencing in 1983, and having reached US$1 billion in annual revenue in 1989, headquartered in Tempe, Arizona. At the time of its acquisition of US Airways, Americ ...
's use of
McCarran International Airport in Las Vegas as a primary night-flight hub to increase aircraft utilization rates far beyond those of competing carriers.
See also
*
Hidden city ticketing
*
List of former airline hubs
This is a list of former airline hubs of major passenger airlines.
North America
Active airlines
Defunct airlines
* Now closed Stapleton International Airport has been replaced by Denver International Airport as the only major airport s ...
*
List of hub airports
A ''list'' is any set of items in a row. List or lists may also refer to:
People
* List (surname)
Organizations
* List College, an undergraduate division of the Jewish Theological Seminary of America
* SC Germania List, German rugby unio ...
*
Point-to-point transit
Point-to-point transit is a transportation system in which a plane, bus, or train travels directly to a destination, rather than going through a central hub. This differs from the spoke-hub distribution paradigm in which the transportation goes ...
*
Transport hub
A transport hub is a place where passengers and cargo are exchanged between vehicles and/or between transport modes. Public transport hubs include railway stations, rapid transit stations, bus stops, tram stops, airports and ferry slips. F ...
Notes
References
{{DEFAULTSORT:Airline hub
Civil aviation