柏林航空
TUI Travel confirmed on 27 March 2009 that it had sealed a strategic partnership with Air Berlin that would see TUI Travel take a 20% stake in Air Berlin, and Air Berlin 20% in TUI fly Germany. Due to regulatory matters, this was changed to 9.9%. Air Berlin will also wet-lease 17 aircraft from TUI fly and take over all of TUI fly Germany's city connections. TUI will focus on serving the charter market with 21 aircraft of the remaining fleet. From 25 October 2009, all German domestic flights previously operated by TUI fly Germany were taken over by Air Berlin, as well as all flights to Austria, Italy and Croatia. Most of these flights are still operated by TUI fly Germany aircraft, but are marketed by Air Berlin.