This is a list of airlines that are based in Ontario which have an air operator's certificate issued by Transport Canada, the country's

civil aviation authority A civil aviation authority (CAA) is a national or supranational statutory authority that oversees the regulation of civil aviation, including the maintenance of an aircraft register. Role Due to the inherent dangers in the use of flight vehicles, ...

Current airlines

Defunct airlines

References

{{Canada topic, List of airlines of Aviation in Ontario Ontario Airlines