Operates as Northwest Airlink from Minneapolis/St. Paul, Detroit, and Memphis.

Major hub in Atlanta.

Member of the Star Alliance with major hubs in Chicago, Denver, Washington DC-Dulles, Seattle, San Francisco, Raleigh, Tokyo, and London-Heathrow.

Member of the SkyTeam Alliance with major hubs in Atlanta, Cincinnati, Los Angeles, Salt Lake City, and New York-JFK.

Major hubs in New York-JFK, Boston, Washing DC-Dulles, Fort Lauderdale, Long Beach, and Oakland.

Member of the SkyTeam Alliance with major hubs in Newark, Cleveland, Houston-Intercontinental, Denver, and New Orleans.

Major hubs in Chicago-Midway, St. Louis, Dallas-Love, Houston-Hobby, Phoenix, Albuequrque.

Delta Connection carrier with hubs in Cincinnati, New York-JFK, Salt Lake City, Orlando, and Boston.

Delta Connection carrier with major hubs in Atlanta, Cincinnati, and Salt Lake City.

Major hubs in Anchorage and Seattle.

Opeated by Boston-Maine Airways serving the northeast, Florida, and the Caribbean.

Airline not officially in service yet.

Serving destinations in Colorado, Idaho, Montana, North Dakota, Washington, and Wyoming.

Operated by Delta Air Lines serving North American and the Caribbean

Operated by United Airlines serving North America.

Provides service from its Denver hub.

Provides service from its major hub in Milwaukee.

Provides service to the Caribbean, the Bahamas, and Latin America.

Major hub in Honolulu serving Hawaii and western North America.

Hawaii's first and largest airline, provides scheduled and charter interisland flights between the Hawaiian Islands. Hawaiian Airlines also provides air transportation between Hawaii, California, Nevada, Oregon, Washington, Alaska, American Samoa and Tahiti.