Thai Airways, the flag carrier of Thailand, is based at Bangkok’s Suvarnabhumi Airport. The airline flies to 78 destinations in 35 countries. In the United States, it only flies to Los Angeles, but that route will be eliminated in October 2015.

Vietnam Airlines, the flag carrier of Vietnam, is based in Hanoi. The airline flies to 52 destinations in 17 countries throughout Asia, the Middle East, Europe and Australia. It doesn’t offer flights to North America.

China Southern Airlines, based in Guangzhou, is Asia’s largest airline in terms of fleet size and the number of passengers carried. It has 400 aircraft and flies to 193 domestic and international destinations. In the U.S., the airline flies to Los Angeles, New York and San Francisco.