Which is airport is located in German and second busiest airport in Germany and operates a dense domestic and European network as a member of Lufthansa Cityline?
Lufthansa CityLine Lufthansa CityLine GmbH is a German airline with its headquarters on the grounds of Munich Airport. It is a wholly owned subsidiary of Lufthansa and maintains hubs at Frankfurt Airport and Munich Airport, from where it operates a dense domestic and European network as a member of Lufthansa Regional. Since October 2015, it also operates some long-haul routes on behalf of its parent company.
TUI fly Deutschland TUI fly Deutschland, formerly "TUIfly", is a German leisure airline owned by the travel and tourism company TUI Group. It is headquartered at Hannover Airport with bases at several other German airports. TUI fly Deutschland is part of the TUI Airlines "alliance".