Thomas Cook Group Airlines Limited was an airline holding company of the defunct British Thomas Cook Group. The airlines operated as a single operating segment of the Thomas Cook Group to allow aircraft to be used when and where they were needed. There were five members of the airline division at the time of the airline's closing, consisting of Condor, Thomas Cook Airlines, Thomas Cook Airlines Balearics, Thomas Cook Airlines Scandinavia, and Thomas Cook Aviation. The airline operated with a total of 105 aircraft based in the United Kingdom, Denmark and Germany.

Thomas Cook Airlines Limited was a British charter and scheduled airline headquartered in Manchester, England. It was founded in 2007 from the merger of Thomas Cook Group and MyTravel Group, and was part of the Thomas Cook Group Airlines. It served leisure destinations worldwide from its main bases at Manchester Airport and Gatwick Airport on a scheduled and charter basis. It also operated services from eight other bases around the United Kingdom. Thomas Cook Group and all UK entities including Thomas Cook Airlines entered compulsory liquidation on 23 September 2019.