currently, there are six five star airlines recognized by Skytrax... for your information, Skytrax is the largest airline review site in the world...
Asiana Airlines
Cathay Pacific Airways
Hainan Airlines
Malaysia Airlines
during the World Airline Awards 2012, the new world's top 10 airlines were announced... the awards is based on the independent passengers survey...
10) Malaysia Airlines
9) Thai Airways
8) Emirates
7) Turkish Airlines
6) Etihad Airways
5) ANA All Nippon Airways
4) Cathay Pacific Airways
3) Singapore Airlines
2) Asiana Airlines
1) QATAR AIRWAYS
check out the full ranking here...