Northwest Airlines (NWA) was one of the major airlines of the United States. In 2008, it was acquired by, and merged into Delta Air Lines to create the world’s largest airline at the time. Northwest Airlines brand ceased to exist by 2010...
Republic Airlines, operating as US Airways Express, was the former feeder airline for US Airways, which integrated into American Airlines in 2015.
Aero Mongolia is an airlines of Mongolia, operating mainly domestic service from its base in Ulan Bator.