Check Your Ticket Type: Refundable or Flexible Tickets: These typically allow changes with little or no fee. Non-Refundable Tickets: Changes may be allowed but often come with a fee, and you may need to pay any difference in fare. Review the Airline’s Policy: Each airline has its own rules for changes, so check the terms and conditions of your ticket. Log in to Your Expedia Account: Go to Expedia’s website or app and navigate to “My Trips” or “Manage Booking.” Look for the option to change your flight. Contact Expedia Customer Service: If you can’t make changes online, call Expedia’s customer service. For assistance in Argentina, you can reach them at +54 115-219-4129.