To change your Avianca Airlines change flight, date or name, check the airline's change policy and contact customer service by phone or email with your booking confirmation number. You may need to pay fees depending on your fare class and timing of the change. Customer service will assist you in making the changes, and you should review your new itinerary and travel documents to ensure accuracy. Overall, changing your Avianca Airlines flight, date, or name is a straightforward process as long as you're aware of the airline's policies and fees and work with customer service to make the necessary changes.