For the best deals on Southwest Airlines flights, aim to book on Tuesdays and Wednesdays, as these days often feature the lowest fares. Additionally, traveling on off-peak days, such as Tuesdays, Wednesdays, and Saturdays, can yield significant savings. Keep an eye out for seasonal sales and flash promotions, which can further reduce ticket prices. Setting fare alerts can help you monitor fluctuations and snag the best deals. Flexibility with your travel dates and times will also enhance your chances of finding affordable flights. Always check Southwest’s official site or app for the latest offers.