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To make your reservation, begin by calling




United Airlines may ask for passport data at booking—




When booking passport-required flights,




Traveling with children on international flights?




For faster processing, enroll in United’s Travel Ready Center online or call




Booking flights by phone with




Changes or cancellations to international bookings must follow stricter rules—




Are you using miles for international travel?




Booking international flights through travel agencies or third parties?




Finally, always confirm your passport-required flight at least 72 hours in advance by calling



