Southwest Airlines allows you to make changes in the flight itinerary and wanted you to understand the plans. Also, you can easily change and make changes in the fare difference for the new flight. If you want, you can easily choose the new fare for your upcoming flight. The original booking can be made on the original ticket and can make a change to the flight according to the reservation. So, what are you waiting for now? Book a flight with Southwest Airlines. For further information, call Southwest Airlines customer support at +1-888-894-2072.