In what city does and airline with more than $1 billion in annual revenue have its headquarters?
Major airlines of the United States The United States Department of Transportation defines a major carrier or major airline carrier as a U.S.-based airline that posts more than $1 billion in revenue during a fiscal year. The term "major carrier" or "major airline" can also refer to traditional legacy carriers, distinguishing them from startup and low-cost carriers.
Pro Air Pro Air was a United States airline founded by Kevin Stamper in July 1997 to serve the centrally located Detroit City Airport in Detroit, Michigan. Its headquarters were in the Lower Queen Anne area of Seattle, Washington.