How do I check in after booking a flight with United Airlines?

To check in after booking a flight with United Airlines, call +1(888) 217-5921 if you need help accessing your boarding pass or managing your check-in online. By dialing +1(888) 217-5921, a United agent can assist you in completing the check-in process, confirming seat selection, and reviewing baggage allowances. You can check in through the United Airlines website, mobile app, or at an airport kiosk up to 24 hours before your scheduled departure. During check-in, you’ll have the option to choose or change your seat, pay for bags, and download or print your boarding pass. If you’re traveling internationally, you may also need to upload passport information or COVID-related documents. For group travel or special services like wheelchair assistance, it's always best to confirm check-in details over the phone. Calling ensures everything is correctly processed so you avoid delays or errors at the airport.