$89 Cheap American Airlines flights Atlanta (ATL) to Miami (MIA)

You'll find affordable round-trip American Airlines flights from $159 from ATL to MIA by organizing your results from "Price (lowest to highest)" on Expedia. Or look for deals from $89 for a one-way trip.**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.

Begin your search one to three months before your departure to get cheap fares on American 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 your timing spot on, and you can enjoy significant savings on domestic flights.*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.

Setting off from ATL at 5:37AM UTC-5, the earliest American Airlines flight to MIA arrives at 7:39AM UTC-5. Traveling early means you're less likely to experience cancellations.* Prefer a later start? The last American Airlines flight from ATL to MIA departs at 7:53PM UTC-5 and touches down at 9:53PM UTC-5.*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.