List of Defunct Airlines of The United States - U

U

  • UltrAir (1993)
  • United States International Airlines
  • Universal Air Lines Corporation (1928–1934, to American Airlines)
  • Universal Airlines (US Cargo Operator 1966 - 1972, to Trans International Airlines)
  • US Air (1979-1996; renamed US Airways)
  • USA3000 Airlines (Ceased operations in 2012)

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