1. American Airlines
Revenue: $29.9 billion
Founded: 2013 (merger of US Airways and AMR)
Headquartered in: Fort Worth, Texas, USA
Alliance: oneworld
Owner: American Airlines Group Inc
Number of countries served: 48
Number of passengers per year: about 165 million
2. Delta Air Lines
Revenue: $29.9 billion
Founded: 1925
Headquartered in: Atlanta, Georgia, USA
Alliance: SkyTeam
Affiliation: Delta Air Lines
Number of countries served: 52
Number of passengers per year: approx. 125 million
3. United Airlines
Revenue: $24.6 billion
Founded: 2010 (merger of United Airlines and Continental Airlines)
Headquartered in: Chicago, Illinois, USA
Alliance: Star Alliance
Owner: United Airlines Holdings
Number of countries served: 74
Number of passengers per year: about 105 million
4. China Southern Airlines
Revenue: $16.4 billion
Founded: 1988
Headquartered in: Guangzhou, Guangdong Province, China
Alliance: None
Affiliation: China Southern Airlines Group Corporation
Number of countries served: 40
Number of passengers per year: about 110 million
5. Lufthansa
Revenue: $15.4 billion
Founded: 1953
Headquartered in Cologne, North Rhine-Westphalia, Germany
Alliance: Star Alliance
Owner: Lufthansa AG
Number of countries served: 77
Number of passengers per year: about 50 million
6. Air China
Revenue: $10.9 billion
Founded: 1988
Headquartered in Beijing, China
Alliance: Star Alliance
Affiliation: Air China Group
Number of countries served: 41
Number of passengers per year: about 105 million
7. China Eastern Airlines
Revenue: $10.8 billion
Founded: 1988
Headquartered in Shanghai, China
Alliance: SkyTeam
Affiliated company: China Eastern Airlines Group Corporation
Number of countries served: 41
Number of passengers per year: about 90 million
8. Southwest Airlines
Revenue: $9.1 billion
Founded: 1967
Headquartered in: Dallas, Texas, USA
Alliance: None
Affiliation: Southwest Airlines
Number of countries served: 11
Annual passenger numbers: about 100 million
9. All Nippon Airways
Revenue: $8 billion
Founded: 1952
Headquarters: Tokyo, Japan
Alliance: Star Alliance
Owner: ANA Holdings, Inc
Number of countries served: 26
Number of passengers per year: about 45 million
10. Air France
Revenue: $7.1 billion
Founded: 1933
Headquartered in: Trembreon France, Ile-de-France
Alliance: SkyTeam
Owner: Air France-KLM Group
Number of countries served: 93
Number of passengers per year: approx. 25 million