All but low-cost carriers
Only low-cost carriers
Star Alliance
SkyTeam
Oneworld
Aegean Airlines
Air Baltic
Air France
Air Malta
Alitalia
British Airways
Condor
CSA
easyJet
Emirates
Jet2
Lufthansa
Luxair
Norwegian Air Intl
Norwegian Air Shuttle
Region-Avia
Ryanair
SAS
SWISS
Transavia France
TUIfly
Tunisair Express
Turkish Airlines
Volotea
Vueling
Wizz Air