Airlines
Star Alliance, oneworld, and SkyTeam member airlines flying to and from Singapore Changi — the airlines most relevant to redeeming and earning miles from a Singapore base. 34 of Changi's ~86 airlines covered so far.
Star Alliance
AC
Air Canada
Toronto Pearson CAAir China
Beijing (Capital & Daxing) AIAir India
Delhi & Mumbai NZAir New Zealand
Auckland NHAll Nippon Airways
Tokyo Haneda & Narita OZAsiana Airlines
Seoul Incheon ETEthiopian Airlines
Addis Ababa BREVA Air
Taipei Taoyuan LHLufthansa
Frankfurt & Munich ZHShenzhen Airlines
Shenzhen SQSingapore Airlines
Singapore Changi LXSwiss International Air Lines
Zurich & Geneva TGThai Airways
Bangkok Suvarnabhumi TKTurkish Airlines
Istanbul UAUnited Airlines
Chicago O'Hare, Houston, Newark, San Francisco (multi-hub)oneworld
BA
British Airways
London Heathrow CXCathay Pacific
Hong Kong FJFiji Airways
Nadi AYFinnair
Helsinki JLJapan Airlines
Tokyo Haneda & Narita MHMalaysia Airlines
Kuala Lumpur WYOman Air
Muscat QFQantas Airways
Sydney, Melbourne, Brisbane & Perth (multi-hub) QRQatar Airways
Doha ULSriLankan Airlines
ColomboSkyTeam
AF