Generally, ???????????????????????? allows free cancellations within 24 hours of booking ???????????????? ????//????????????//????????????//????????????????(????????????????????????-????????????????????????????????) Or Toll-Free ????-????????????-????????????-???????????????? [Quick-connect]. , provided the flight was booked at least seven days in advance. After this period, fees may... https://www.devex.com/people/what-is-the-cancellation-policy-on-united-2079190