$87 Cheap American Airlines flights St. Louis (STL) to Miami (MIA)

Set the “Price (lowest to highest)” filter on Expedia to look for cheap American Airlines round-trip flights from $173 from STL to MIA. Affordable one-way tickets from $87 are also on offer.**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.

Look for one-way or round-trip flights to Miami in September or October. You could find an affordable fare with American Airlines during these off-peak travel months.

To find cheap American Airlines fares from Lambert-St. Louis Intl. Airport (STL) to Miami Intl. Airport (MIA), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the cost. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight on a Sunday.**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.

American Airlines offers direct flights from Lambert-St. Louis Intl. Airport (STL) to Miami Intl. Airport (MIA), with 14 departures each week. Just choose the “Nonstop” and “Airline” filters while searching on Expedia to find all direct American Airlines flights to MIA.

It takes approximately 2h 51m to travel nonstop from Lambert-St. Louis Intl. Airport (STL) to Miami Intl. Airport (MIA) with American Airlines.

Thursday has the most American Airlines flights from Lambert-St. Louis Intl. Airport (STL) to Miami Intl. Airport (MIA). With 2 daily departures, this is the best day of the week to book something that will suit your plans.

The earliest American Airlines flight from STL to MIA takes off at 5:10AM UTC-6, landing at 9:03AM UTC-5. If you want to set off later, the last American Airlines flight leaves STL at 4:44PM UTC-6 and touches down at MIA at 8:32PM UTC-5. Flying before noon is often a wise choice as morning and mid-morning flights are less likely to experience cancellations.**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.

American Airlines flights from Lambert-St. Louis Intl. Airport (STL) to Miami touch down at Miami Intl. Airport (MIA) and Fort Lauderdale - Hollywood Intl. Airport (FLL). The main Miami hub served by this airline is MIA. It’s always worth exploring flights arriving at nearby airports on Expedia as they may have cheaper prices.

American Airlines generally flies Airbus A319 planes for flights from Lambert-St. Louis Intl. Airport (STL) to Miami Intl. Airport (MIA). This carrier also operates the Embraer 175 on this route. Bear in mind that aircraft type can vary due to operational reasons, so the plane you board could be different when you travel.

Depending on the type of fare you purchased, a fee will generally apply if you cancel or change your flight more than 24 hours after confirmation. To secure flexible fares, select our “Changes included” and “No cancel fee” boxes when you search for flights. For more information on canceling or changing your reservation, go to “Trips,” select your flight and tick “Manage Booking.”