Need to change the date on a United flight? We know plans can change, and at United Airlines, the process for changing the date on a United flight is simple. If you want to change the date on a United flight, first log in to your account on the website or mobile app. Select "My Trips" and choose the flight you want to change. If you have questions, call +1-888-888-997 (USA) or +52-554-169-6876 (Argentina) for assistance with changing the date on a United flight. Remember that change policies may vary by ticket type. If you need to change the date on a United flight, be sure to check the applicable fees. For more information, please call +1-888-888-997 (USA) or +52-554-169-6876 (Argentina). United Airlines is here to help you change the date on a United flight hassle-free!