Cheap Flights from St. Louis (SUS) to Miami (MIA)

Featured airlines

American Airlines
United
Southwest Airlines
Delta
Spirit Airlines
JetBlue Airways
Frontier Airlines
Air India
Hawaiian Airlines

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
    Learn about One Key
Find available prices by choosing your travel dates.
Flights from St. Louis (SUS) to Miami (MIA)
Origin airport
Spirit of St. Louis
Destination airport
Miami Intl.
Distance
1074 mi

St. Louis to Miami Flights

The cheapest times to fly from St. Louis to Miami

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Miami are during the month of . You can find some of the cheapest flights from St. Louis to Miami with Expedia's search tool and vast selection of airlines.

The best time to book a flight from St. Louis to Miami

Sunday is one of the best days to book for cheap flights from St. Louis to Miami: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from St. Louis to Miami

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Miami in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Miami flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Miami airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Spirit of St. Louis Airport (SUS) to Miami Intl. Airport (MIA) cost?
Discover the latest flight deals from SUS to MIA by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SUS to MIA?
The cheapest flights from SUS to MIA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Spirit of St. Louis Airport (SUS) to Miami Intl. Airport (MIA)?
You can’t take a direct flight to Miami Intl. Airport (MIA) from St. Louis, MO (SUS-Spirit of St. Louis). However, you can easily travel to Miami without any layovers by leaving from Lambert-St. Louis Intl. Airport (STL).
What is the cheapest airline that flies from SUS to MIA?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from SUS to MIA. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Spirit of St. Louis Airport (SUS) to Miami Intl. Airport (MIA)?
There aren’t any daily direct flights from Spirit of St. Louis Airport (SUS) to Miami Intl. Airport (MIA). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you’ll be on your way before you know it.
What day of the week has the most flights from SUS to MIA?
You’ll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Spirit of St. Louis Airport (SUS) to Miami Intl. Airport (MIA)?
To land at Miami Intl. Airport (MIA) without delays, choose a flight that takes off from Spirit of St. Louis Airport (SUS) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Spirit of St. Louis Airport (SUS) to Miami Intl. Airport (MIA) last-minute?
Last-minute fares from SUS to MIA are generally more expensive. For the best prices, start looking for flights as early as possible. That being said, if you can play around with your travel dates, it’s possible to score a cheap fare right before your trip.
Is it cheaper to book a SUS to MIA flight and hotel package?
Booking a SUS to MIA flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our impressive range of hotels and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Spirit of St. Louis Airport (SUS) to Miami Intl. Airport (MIA)?
If you booked your SUS to MIA flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

Explore a world of travel with Expedia

*Available to One Key members.