United offers a general 𝟤𝟦-hour refund policy. This means you can cancel most bookings within 𝟤𝟦 hours of making them and get a full refund, as long as your travel date is at least a week away. To get a full refund, call their customer service number: +𝟏- 𝟖𝟑𝟑- 𝟒𝟔𝟎- 𝟏𝟖𝟑𝟖. They are available 𝟤𝟦 hours a day