Yes, flights booked through Expedia can usually be changed, but the rules depend on the airline and fare class. Many airlines now allow free changes on certain tickets, while others still charge fees. To make changes, log into your Expedia account, go to “My Trips,” and choose your reservation. If the airline allows it, you can select a new flight. For extra help or to confirm fees before changing, call 866-204-0803 and an Expedia representative will assist you.