Thomas Cook Aviation GmbH was[1] a German leisure airline launched in 2017 and a technical subsidiary of Condor.

[2] It operated scheduled flights exclusively on behalf of Condor to destinations throughout Europe, from its bases in Düsseldorf and Leipzig/Halle.

The airline was established in October 2017 as Air Berlin Aviation GmbH and was taken over by Thomas Cook Group in 2018 in order to facilitate rapid growth in Germany in the aftermath of the Air Berlin insolvency.

[9] In the same month, Condor announced that after separation from the defunct Thomas Cook Group, it would update the livery of its aircraft by removing all references to its former parent company and replace the heart-shaped logo by its own company logo.

[8] As of March 2020, the Thomas Cook Aviation fleet consisted of the following aircraft:[10]