united airlines customer service phone number
United Airlines Phone Number. â Customer Service Toll Free Phone Number: 1-800-241-6522. â Reservations Phone Number: 1-800-864-8331. â Hours of Operation: 24 Hours 7 Days a Week. â Average Waiting Time: 10 â 15 Minutes. â Calling Tips: When your call gets answered press â0â, say âYesâ, and then follow the provided instructions.