$100 Cheap American Airlines flights Miami (MIA) to St. Louis (STL)

Scoring cheap one-way American Airlines flights from MIA to STL from $100 on Expedia is a breeze — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares from $194 for your next adventure.**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.

American Airlines flights to St. Louis are generally more affordable in the off-peak months of January and February. Whether you’re in search of a one-way or a return ticket, you could score a better deal then.

Look for cheap American Airlines flights from Miami Intl. Airport (MIA) to Lambert-St. Louis Intl. Airport (STL) one to three months ahead of your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and journey, the ideal day to book a domestic flight is generally Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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 Miami Intl. Airport (MIA) to Lambert-St. Louis Intl. Airport (STL), with 14 weekly departures. Just apply the “Nonstop” and “Airline” filters while searching on Expedia to show all direct American Airlines flights to STL.

The travel time for a nonstop American Airlines flight from Miami Intl. Airport (MIA) to Lambert-St. Louis Intl. Airport (STL) typically takes 3h 14m.

American Airlines has the most flights from Miami Intl. Airport (MIA) to Lambert-St. Louis Intl. Airport (STL) on Monday. With up to 2 daily departures, you’ll get the most flexibility on this day.

The first flight from MIA to STL with American Airlines leaves at 2:09PM UTC-5. You’ll touch down at 4:08PM UTC-6. The final American Airlines flight of the day takes off at 8:00PM UTC-5 and arrives at 10:28PM UTC-6. With 20% fewer cancellations for morning departures, jetting out early is often the best way to go.**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 Miami Intl. Airport (MIA) to St. Louis land at Lambert-St. Louis Intl. Airport (STL). This is the main entry point to this city.

You’ll likely be on an Airbus A319 or an Embraer 175 when flying American Airlines from Miami Intl. Airport (MIA) to Lambert-St. Louis Intl. Airport (STL). However, keep in mind that a different plane may be assigned depending on operational reasons.

It’s generally possible to cancel or change your flight, although additional fees may apply if you booked more than 24 hours ago. Want to keep your options open? Use Expedia’s “Changes included” or “No cancel fee” filter to find flights that won’t penalize you if you have to revise your plans. To make changes, go to “Trips,” select your flight and click on “Manage Booking” for more details.