The closest airport to Claremont McKenna College is Ontario International, which is served by most major airlines and all major car rental agencies. A cab or rideshare to Claremont takes 20 minutes.
From Los Angeles International (LAX), rent a car or take a shuttle van to Claremont. The trip may take up to two hours, especially during morning and evening rush hours.
There are three other airports within a 45-mile radius of Claremont: Hollywood Burbank (Bob Hope), John Wayne Airport in Orange County and Long Beach Airport.