Yes, you can reschedule or cancel a flight. However, you may need to pay a change or cancellation fee depending on the airline you booked with and the fare class of your ticket. With our 24-hour booking policy you can make changes to your reservation within 24-hours of buying your ticket without paying a fee. But there are a few rules: You must book your flight at least one week in ad... https://community.expensify.com/discussion/18949/1-888-829-1467-ua-change-travel-date-on-united-airlines-flight-ticket/