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.
Alitalia CityLiner Alitalia CityLiner S.p.A. is the regional subsidiary of Alitalia. It operates short haul point to point flights with low passenger load factors, using regional airliners, and carries passengers from minor airports to Alitalia's hub at Leonardo da Vinci–Fiumicino Airport.