If you need to cancel your flight booked through Expedia, the process is relatively straightforward. First, log in to your Expedia account and navigate to your itinerary. From there, select the flight you wish to cancel and follow the instructions to submit the cancellation request. Keep in mind that cancellation policies vary depending on the airline and fare type, so be sure to check the terms before proceeding. If you need assistance on how to cancel flight on Expedia, you can contact Expedia’s customer service team at 1-888-725-8215, where a representative will guide you through the cancellation process and help with any concerns regarding refunds or changes to your booking.