What is a flight change fee?
But what exactly does that mean? Change Fee: This is a fee the airline charges to make a change to a reservation, typically to rebook on a different flight. Cancellation (Refund) Fee: This is a fee the airline charges to cancel a reservation and process a refund.
https://s3.amazonaws.com/travel-support/Flight+Change+Price.html
https://s3.amazonaws.com/travel-support/Flight+Change+Price.html