10.Air china – 338
Old planes, cabins, and seats, who would want to travel in a plane with old fixtures? You would want to enjoy a modern, aspiration aircraft that will make you feel comfortable and safe. Passengers have also experienced delayed flights and what is even worse is that the airline does not give any explanation for the delay. The budget flight will really give you the worst definition of budget flight. A lot of flight attendants also do not understand English, which makes service and communication extremely difficult many passengers. Make sure you bring with you a bag of patience whenever you decide to travel via Air China.
9.China Eastern Airlines – 405
China Eastern Airlines is owned by China Eastern Airlines Corporation Limited. A major Chinese airline, it is headquartered at Shanghai Hongqiao International Airport in Changning District in Shanghai, China. It is China’s second largest carrier in terms of passenger numbers, and operates regional, domestic, and international routes. In 2012 alone, it flew more than 73 million international and domestic passengers. In 2011, China Eastern Airlines and its subsidiary Shanghai Airlines became members of SkyTeam, a global alliance of 19 top-quality airlines that flies to 1,024 destinations.
8.Air Canada – 408
Air Canada is the largest airline and the flag carrier of Canada. It was founded in 1936 under the name Trans-Canada Airlines, and was renamed Air Canada in 1965. While it was originally a government creation, it has since been privatized. Its corporate headquarters is located in Montreal, Quebec, and its largest hub is at the Toronto Pearson International Airport in Mississauga, Ontario. It provides chartered and scheduled air transport for cargo and passengers to 178 destinations worldwide, and is a founding member of Star Alliance, an alliance of 28 airlines that was formed in 1997. Its 354 plane fleet includes the aircraft of its regional service provider, Air Canada Express.
7.China Southern Airlines – 509
China Southern Airlines is owned by China Southern Airlines Company Limited. Its headquarters is located at Baiyun District, Guangzhou Province at the People’s Republic of China, and its main hubs are located at the Guangzhou Baiyun International Airport and the Beijing Capital International Airport. It is Asia’s largest airline in terms of passengers carried and fleet size, and is the fourth largest airline in the world by domestic passenger traffic. It is considered one of China’s Big Three airlines, together with China Eastern Airlines and Air China. It flies to 193 destinations and is a member of SkyTeam. It carried 86.5 million international and domestic passengers in 2012.
6.Lufthansa – 616
Deutsche Lufthansa AG, also known as Lufthansa German Airlines, is the flag carrier of Germany. It is the largest airline in Europe in terms of fleet size and overall passengers carried. It was previously a state-owned enterprise, but was privatized in 1994. Its corporate headquarters is located in Cologne, North Rhine-Westphalia, Germany. Lufthansa Aviation Center, its main operations base, is located at its primary traffic hub at the Frankfurt Airport. It flies to 18 domestic destinations and 197 international destinations in 78 countries worldwide. Its 401 planes include the fleets of Lufthansa Regional and Lufthansa CityLine.
5.FedEx  Express – 634
Coming in at a top five position, FedEx is the only operator on this list that doesn’t fly passengers–or at least not human passengers. Instead, it flies freight: lots of freight. Based out of Memphis and founded as Federal Express, FedEx jumped into being as an overnight freight delivery service entirely reliant on aircraft–unlike legacy competitors like UPS, which made the transition to air only slowly. Today, it operates one of the largest aircraft fleets in the world. One would-be competitor, the United States Postal Service, doesn’t own any of its own aircraft, leaving FedEx the untouched freight fleet champion. Among its many hubs is one surprise: Anchorage, Alaska. Instead of delivering there, however, Anchorage is just a way-point for FedEx’s continual flights between China and other Asian countries and the US mainland. Not a bad showing considering they have no passengers!
4.Southwest Airlines – 683
Located in Dallas, Texas, Southwest Airlines is the world’s largest low-cost carrier, and carries the greatest number of domestic passengers of any U.S. airline. It flies to 86 destinations in 42 states and Puerto Rico. It operates more than 3,400 flights daily, and only flies Boeing 737s. It is the largest 737 operator worldwide, with more than 550 in service, each flying an average of six trips daily. Its fleet of 683 includes the AirTran Airways’ planes, an airline it acquired in 2011. The integration of the two carriers is expected to be completed in 2014.
3.United Airlines – 1,264
United Airlines, Inc. is a wholly owned subsidiary of United Continental Holdings. Previously owned by The Boeing Company, one of the world’s largest aircraft makers, its headquarters is located at the Willis Tower in Chicago, Illinois. It operates in 10 airline hubs in Japan, Guam, and the continental United States. With its acquisition of Continental Airlines, it now enjoys more revenue passenger miles than any other airline in the world. Its fleet of 1,264 includes the planes of its flight connection service brand name, United Express.
2.Delta Air Lines – 1,280
Delta Air Lines, Inc. is the oldest airline operating in the US. Its headquarters is located in Atlanta in Georgia, and its hub and  technical operations center, Delta TechOps, are located at the Hartsfield-Jackson Atlanta International Airport, the busiest airport in the world in terms of landings, takeoffs, and passenger traffic. It flies to numerous domestic and international destinations, serving all continents except for Antarctica. It operates more than 5,000 flights daily, and is one of the founding members of the SkyTeam alliance. Its fleet of 1,280 planes includes the fleet of its regional service provider, Delta Connection.
1.American Airlines Group – 1494
American Airlines is another major airline in the United States. Owned by AMR Corporation and run out of Fort Worth, Texas, its largest hub is located at the Dallas/Fort Worth International Airport, where it accounts for 85% of traffic and 83% of landing fees. It flies to numerous domestic and international destinations throughout Asia Pacific, Europe, South America, the Caribbean, and North America. Early in 2013, it announced plans to merge with US Airways, with American Airlines being the surviving name and branding. If the merger pushes through, it will create the largest airline in the world. However, the planned merger faces a civil lawsuit over anti-trust issues. The airlines, for their part, have vowed to continue the merger. Its fleet of 873 includes American Eagle, which operates most of its regional carrier flights.
