Related Clues:

• Unified
• Northwest competitor
• Airline with the old slogan 'Up, up and away'
• It's found around the mouth
• United rival
• Its hub is in St. Louis
• J.F.K. terminal
• Letters on some 747's
• One way to stand
• River's end
• See 58-Down
• US Airways competitor
• 'Up up and away' co.
• River deposit
• Mouth part