Visit Southwest Airlines' "Change Itinerary" page. Enter your confirmation number, and the first and last name of the passenger. Click "Continue."
Check the boxes beside the flight you'd like to change when it is presented to you on the next page. Click "Continue."
Enter the new date and/or time you'd like to fly. Select the most desirable flight from the list of options meeting your criteria. Click "Continue."
Check everything over on the summary page that appears. If your new flight costs more or less, you'll see the difference listed here. Your credit card will either be reimbursed or charged as needed. Press "Submit" to finish the process.Southwest Airlines has been a major airline for over two decades. They fly to 69 cities in 35 states. According to their website, Southwest has had the "lowest ratio of complaints per passengers boarded of all Major U.S. carriers" since 1987, which is when the Department of Transportation (DOT) began recording such statistics. They were also the first airline to establish a home page on the Internet. Now, this website allows users to book and change reservations with ease.