Related Clues:

• Its slogan was once 'The things we do to make you happy'
• Pan Am rival, formerly
• Northwest competitor
• Airline with the old slogan 'Up, up and away'
• American competitor
• United rival
• Its hub is in St. Louis
• J.F.K. terminal
• Letters on some 747's
• Name on many planes
• It began service in 1927
• US Airways competitor
• 'Up up and away' co.
• New name for Allegheny in 1979
• Carrier name until 1997