This is a

list 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 uni ...

of airline codes. The table lists IATA's two-character airline designators,

ICAO The International Civil Aviation Organization (ICAO, ) is a specialized agency of the United Nations that coordinates the principles and techniques of international air navigation, and fosters the planning and development of international ...

's three-character airline designators and the airline call signs (telephony designator). Historical assignments are also included.ht

IATA airline designator

IATA airline designators, sometimes called IATA reservation codes, are two-character codes assigned by the

International Air Transport Association The International Air Transport Association (IATA ) is a trade association of the world's airlines founded in 1945. IATA has been described as a cartel since, in addition to setting technical standards for airlines, IATA also organized tar ...

(IATA) to the world's

airline An airline is a company that provides air transport services for traveling passengers and freight. Airlines use aircraft to supply these services and may form partnerships or alliances with other airlines for codeshare agreements, in which ...

s. The standard is described in IATA's ''

Standard Schedules Information Manual The Standard Schedules Information Manual (SSIM) published by the International Air Transport Association The International Air Transport Association (IATA ) is a trade association of the world's airlines founded in 1945. IATA has been describ ...

'' and the codes themselves are described in IATA's ''Airline Coding Directory''. (Both are published semiannually.) The IATA codes were originally based on the ICAO designators which were issued in 1947 as two-letter airline identification codes (see the section below). IATA expanded the two-character-system with codes consisting of a letter and a digit (or vice versa) e.g.

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's U2 after ICAO had introduced its current three-letter-system in 1982. Until then only combinations of letters were used. Airline designator codes follow the format xx(a), i.e., two alphanumeric characters (letters or digits) followed by an optional letter. Although the IATA standard provides for three-character airline designators, IATA has not used the optional third character