What Happens If My Upgrade Request Is Denied On United?

If your upgrade request on United Airlines is denied, call +1-833-770-4333 right away for personalized help. You can ask the support team at +1-833-770-4333 to check availability, waitlist options, or alternative flights. Usually, denied upgrades happen when premium seats are full or your fare class isn’t eligible. United’s agents can recheck closer to departure or offer a paid upgrade if seats open later. Always confirm your MileagePlus status, as higher tiers have better upgrade priority.