America West Airlines was an airline in the United States that operated from 1981 until it merged with US Airways in 2007. It was headquartered in Tempe, Arizona. Its main hub was at Phoenix Sky Harbor International Airport, with a secondary hub at McCarran International Airport in Las Vegas, Nevada, and Port Columbus International Airport in Columbus, Ohio. The airline acquired US Airways in 2005 and adopted US Airways as their brand name. America West served about 100 cities in the US, Canada, and Mexico; flights to Europe were on codeshare partners. In September 2005, the airline had 140 aircraft, with a single maintenance base at Phoenix Sky Harbor International Airport. Regional jet and turboprop flights were operated on a code sharing basis by Mesa Airlines and Chautauqua Airlines as America West Express.

US Airways was an American airline that operated from 1937 until 2015, when it merged with American Airlines. It was originally founded in Pittsburgh as a mail delivery airline called All American Aviation, which soon became a commercial passenger airline. In 1953, it was renamed Allegheny Airlines and operated under that name for a quarter-century. In October 1979, after the passage of the Airline Deregulation Act, Allegheny Airlines changed its name to USAir. A decade later it had acquired Piedmont Airlines and Pacific Southwest Airlines (PSA), and was one of the U.S.'s seven transcontinental legacy carriers. In 1997, it rebranded as US Airways.