How to Reschedule a United Airlines Flight To reschedule a United Airlines flight, call 1-888-854-5587. Provide your booking details, choose a new date, and pay any applicable fees or fare differences. Travel plans can change for many reasons—unexpected emergencies, schedule adjustments, or personal preferences. Fortunately, United Airlines offers flexible options for passengers who... https://flyrules.com/reschedule/how-to-change-date-or-reschedule-united-airlines-flight/