Passengers can select their preferred seat at the time of booking by visiting the Avianca website or calling the Avianca Customer Center. Alternatively, they can also add a seat after booking by logging into the Avianca website and selecting the "Add Your Seat" option. However, the availability of seats may vary by flight, and passengers are advised to check seat availability before booking their preferred seat. Avianca seat selection  provides passengers with the option to select their preferred seat during the flight reservation process or add it later as  an additional service. Passengers can choose from a variety of seat options, including those located in emergency exits, duo seats between window and aisle, or standard seats to fly together with family and friends.