Can I Change a Flight I Already Booked? Yes, you can change a flight you already booked through Expedia +1^800^228^91:56. However, the ability to make changes depends on the fare rules associated with your ticket and the policies of the airline you're flying with. Some airlines may charge a fee for changes, and fare differences may apply.Pay Any Necessary Fees: If your ticket does not allow free changes, be prepared to pay a change fee plus any difference in fare between your old and new flight. Confirm Your New Booking: Once you've made the changes, ensure you receive confirmation of your new flight details.