To make it possible for the customers to purchase the seat in advance of the check-in windows accessibility, United airlines seat selection service has been included. With this, one can choose their own comfort zone on the flight. Although, one should pay for making the seat selection on United Airlines Flights in advance. The seat selection fee depends on the fare type and seat assignment. To prevent seat selection fees, one can avoid making seat selection in advance rather than doing it when the check-in windows are accessible.

But seat selection during the check-in windows accessibility depends on the seat accessibility.