Southwest Airlines date change | 1-855-570-0146 Southwest Airlines offers a flexible policy for passengers needing to change their flight dates, emphasizing customer convenience and transparency. Southwest Airlines does not charge a fee to change your flight. However, if the new flight is priced higher than your original booking, you'll be responsible for paying the fare difference. Conversely, if the new fare is lower, the difference will be refunded or applied as travel credit, depending on your fare type. https://www.topairlinerules.com/blogs/southwest-airlines-date-change