Three Chinese air carriers entered the list of the world's most competitive airlines, according to a ranking released by the World Air Stewardess Association.

Air China, China Southern Airlines and China Eastern Airlines ranked fourth, fifth and seventh respectively, evaluated by the association's GN Comprehensive Competitiveness Airline Evaluation Indicator System.

The indictor system includes 3 first-level indicators - Resources Size Index, Capability Index, and Environment Index, and 12 second-level indicators.

Airlines with strong comprehensive competitiveness share the features of having a large operating scale, good operations management, a worldwide airline network, better service quality and a high safety level, according to the association.

Here is the list of the world's airlines with the strongest comprehensive competitiveness.

No 10 Air Canada

Score: 80.73

No 9 Lufthansa

Score: 82.58

No 8 Emirates Airline

Score: 83.64

No 7 China Eastern Airlines

Score: 85.17

No 6 International Airlines Group

Score: 86.18

No 5 China Southern Airlines

Score: 87.91

No 4 Air China

Score: 89.52

No 3 Air France-KLM

Score: 90.33

No 2 Delta Air Lines

Score: 91.07

No 1 American Airlines Group

Score: 93.89