Are you willing to make changes to your booking with Avianca? There are many reasons why people would want to change their flight plans. This could be because it's cheaper, there's bad weather in the original location, or the original passenger will be late to fly out of an airport due to some sort of emergency. The Avianca Change Flight option is only however available for tickets bought through the airline will be eligible for making direct changes. Booking changes through a travel agency can be made by calling customer care. If you need to reschedule your flight, you can leave the booking open and book another flight with Avianca Airlines.