Cheap flights from St. Louis to Miami from $66

The month of September is, on average, the cheapest month to fly to Miami from St. Louis, with most prices found around $311. If you are unable to visit Miami during the month of September, then departing from St. Louis during the month August is also very affordable. Most momondo users find prices during this month for around $330.

The cheapest day to depart from St. Louis to Miami is on a Sunday when prices can be found for as low as $504. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Miami on Tuesday is $588.

In the evening is the cheapest time of day to fly from St. Louis to Miami when you can find flight prices for as low as $408. Flying to Miami in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $545. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Lambert-St Louis to Miami for the best Lambert-St Louis - Miami flight prices

You are more likely to see cheaper flights to Miami from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Miami for around $398 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Miami from St. Louis for as low as $334 on momondo.

There are 3 cabin classes available to choose from on Lambert-St Louis to Miami flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 28% on your flight if you consider stops on a St. Louis to Miami flight.

As of April 2026, prices for St. Louis to Miami flights are approximately 165% more expensive when compared to flights at the same time last year.

Delta, Southwest, and United Airlines are the most popular carriers operating from Lambert-St Louis to Miami

American Airlines, Southwest and Delta are the top three most popular airlines that fly to Miami from St. Louis according to our data. American Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Miami. Keep in mind that there are 8 different airlines that fly to Miami on a routine basis, so you have a few additional options to choose from.

Atlanta (ATL) was the most common stop: 90% of momondo users choosing 1-stop flights on this route connected there.

Flights via Denver (DEN) offer the lowest average round-trip price of $175.

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 8h 02m.

Denver (DEN) has the shortest average layover time for this route: 3h 59m.

4 flights are operational daily from St. Louis to Miami as of April 2026. The most popular departure time for this route is 11:00AM, with 63% of flights per day taking off at noon.

31 flights are operational weekly from St. Louis to Miami as of April 2026. The most popular departure day for this route is Fri, with 19% of flights per week taking off on this day.