$53 Cheap Southwest Airlines flights Atlanta (ATL) to Miami (MIA)

You can find budget-friendly return Southwest Airlines flights from $105 from ATL to MIA by organizing your results from "Price (lowest to highest)" on Expedia. Or search for options from $53 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Start searching one to three months ahead of your departure date to get cheap fares on Southwest Airlines flights from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to Miami Intl. Airport (MIA). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get the timing right, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

The earliest flight from ATL to MIA with Southwest Airlines departs at 10:40AM UTC-5. You'll land at 12:35PM UTC-5. The last Southwest Airlines flight of the day leaves at 11:25AM UTC-5 and arrives at 1:25PM UTC-5. With approximately 20% fewer cancellations for morning and mid-morning flights, heading out early is typically the best choice.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.