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united airlines have 40 lounges in 34 major airports around the world

Bangkok-Suvarnabhumi
Boston
Buenos Aires
Chicago-O'Hare (4)
Denver (2)
Frankfurt
Hong Kong
Honolulu
Los Angeles
Melbourne
Mexico City
Newark
New York-JFK
New York-LaGuardia
Orange County
Orlando
Osaka-Kansai
Paris-CDG
Philadelphia
Phoenix
Portland, OR
San Diego
San Francisco (2)
São Paulo
Seattle/Tacoma
Tokyo-Narita
Washington-Dulles (3)