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Cheap flights from Miami to St. Louis from $48

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Miami to St. Louis departing on 12/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:30 am - 11:07 amMIA-STL
6h 37m1 stop
Frontier Logo
12:04 pm - 12:46 amSTL-MIA
11h 42m1 stop
$110Frontier
Find Deal
Thu, Dec 4 - Thu, Dec 11
Frontier Logo
2:21 pm - 11:01 pmMIA-STL
9h 40m1 stop
Frontier Logo
3:14 pm - 11:40 pmSTL-MIA
7h 26m1 stop
$127Frontier
Find Deal
Wed, Nov 19 - Sun, Nov 23
Frontier Logo
5:30 am - 11:07 amMIA-STL
6h 37m1 stop
Frontier Logo
7:43 pm - 5:19 amSTL-MIA
8h 36m1 stop
$128Frontier
Find Deal
Thu, Dec 11 - Sat, Dec 13
Frontier Logo
5:30 am - 11:07 amMIA-STL
6h 37m1 stop
Frontier Logo
10:42 am - 12:46 amSTL-MIA
13h 04m1 stop
$136Frontier
Find Deal
Thu, Dec 4 - Sun, Dec 7
Frontier Logo
5:30 am - 11:07 amMIA-STL
6h 37m1 stop
Frontier Logo
10:42 am - 12:46 amSTL-MIA
13h 04m1 stop
$137Frontier
Find Deal
Thu, Dec 4 - Sun, Dec 7
Frontier Logo
5:30 am - 9:47 amMIA-STL
5h 17m1 stop
Frontier Logo
7:43 pm - 5:19 amSTL-MIA
8h 36m1 stop
$143Frontier
Find Deal
Fri, Dec 5 - Fri, Dec 12
Frontier Logo
5:30 am - 9:47 amMIA-STL
5h 17m1 stop
Frontier Logo
10:57 am - 12:47 amSTL-MIA
12h 50m1 stop
$153Frontier
Find Deal
Sun, Dec 14 - Sun, Dec 21
Multiple Airlines Logo
10:19 pm - 9:40 amMIA-STL
12h 21m1 stop
Multiple Airlines Logo
10:57 am - 1:06 pmSTL-MIA
25h 09m1 stop
$154Multiple Airlines
Find Deal
Sat, Dec 20 - Sun, Dec 28
Multiple Airlines Logo
4:09 pm - 2:29 pmMIA-STL
23h 20m1 stop
Multiple Airlines Logo
10:47 am - 12:46 amSTL-MIA
12h 59m1 stop
$156Multiple Airlines
Find Deal
Sat, Nov 22 - Mon, Dec 15
United Airlines Logo
5:40 pm - 11:59 pmMIA-STL
7h 19m1 stop
United Airlines Logo
6:00 am - 1:30 pmSTL-MIA
6h 30m1 stop
$257United Airlines
Find Deal
Tue, Feb 3 - Tue, Feb 10

Frontier flights from Miami to St. Louis

Our best Frontier deals on Miami to St. Louis flight tickets
Frontier
Dec 4
MIA5:30 amMiami
6h 37m
1 stop
STL11:07 amLambert-St Louis
Dec 11
STL12:04 pmLambert-St Louis
11h 42m
1 stop
MIA12:46 amMiami
$110
Find similar
Frontier
Nov 19
MIA2:21 pmMiami
9h 40m
1 stop
STL11:01 pmLambert-St Louis
Nov 23
STL3:14 pmLambert-St Louis
7h 26m
1 stop
MIA11:40 pmMiami
$127
Find similar
Frontier
Dec 11
MIA5:30 amMiami
6h 37m
1 stop
STL11:07 amLambert-St Louis
Dec 13
STL7:43 pmLambert-St Louis
8h 36m
1 stop
MIA5:19 amMiami
$128
Find similar

United Airlines flights from Miami to St. Louis

Our best United Airlines deals on Miami to St. Louis flight tickets
United Airlines
Feb 3
MIA5:40 pmMiami
7h 19m
1 stop
STL11:59 pmLambert-St Louis
Feb 10
STL6:00 amLambert-St Louis
6h 30m
1 stop
MIA1:30 pmMiami
$257
Find similar
United Airlines
Nov 20
MIA7:15 amMiami
11h 24m
2 stops
STL5:39 pmLambert-St Louis
Dec 1
STL10:00 amLambert-St Louis
7h 17m
1 stop
MIA6:17 pmMiami
$617
Find similar
United Airlines
Nov 20
MIA7:15 amMiami
11h 24m
3 stops
STL5:39 pmLambert-St Louis
Dec 1
STL10:00 amLambert-St Louis
7h 17m
1 stop
MIA6:17 pmMiami
$622
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Miami to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 6, 2025.
Use the filters below to find and compare flights from Miami to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MiamiSt. Louis

MIA - STL

MIASTL

Miami

Thu 12/4

5:30 am-11:07 am

1 stop6h 37m

Lambert-St Louis

Thu 12/11

12:04 pm-12:46 am

1 stop11h 42m

$110

MiamiSt. Louis

MIA - STL

MIASTL

Miami

Wed 11/19

2:21 pm-11:01 pm

1 stop9h 40m

Lambert-St Louis

Sun 11/23

3:14 pm-11:40 pm

1 stop7h 26m

$127

MiamiSt. Louis

MIA - STL

MIASTL

Miami

Thu 12/11

5:30 am-11:07 am

1 stop6h 37m

Lambert-St Louis

Sat 12/13

7:43 pm-5:19 am

1 stop8h 36m

$128

MiamiSt. Louis

MIA - STL

MIASTL

Miami

Thu 12/4

5:30 am-11:07 am

1 stop6h 37m

Lambert-St Louis

Sun 12/7

10:42 am-12:46 am

1 stop13h 04m

$136

MiamiSt. Louis

MIA - STL

MIASTL

Miami

Thu 12/4

5:30 am-11:07 am

1 stop6h 37m

Lambert-St Louis

Sun 12/7

10:42 am-12:46 am

1 stop13h 04m

$137

MiamiSt. Louis

MIA - STL

MIASTL

Miami

Fri 12/5

5:30 am-9:47 am

1 stop5h 17m

Lambert-St Louis

Fri 12/12

7:43 pm-5:19 am

1 stop8h 36m

$143

MiamiSt. Louis

MIA - STL

MIASTL

Miami

Sun 12/14

5:30 am-9:47 am

1 stop5h 17m

Lambert-St Louis

Sun 12/21

10:57 am-12:47 am

1 stop12h 50m

$153

MiamiSt. Louis

MIA - STL

MIASTL

Miami

Sat 12/20

10:19 pm-9:40 am

1 stop12h 21m

Lambert-St Louis

Sun 12/28

10:57 am-1:06 pm

1 stop25h 09m

$154

MiamiSt. Louis

MIA - STL

MIASTL

Miami

Sat 11/22

4:09 pm-2:29 pm

1 stop23h 20m

Lambert-St Louis

Mon 12/15

10:47 am-12:46 am

1 stop12h 59m

$156

MiamiSt. Louis

MIA - STL

MIASTL

Miami

Tue 2/3

5:40 pm-11:59 pm

1 stop7h 19m

Lambert-St Louis

Tue 2/10

6:00 am-1:30 pm

1 stop6h 30m

$257

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Miami to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, October is the cheapest month to fly from Miami to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $274. The month of August is another great option to travel to St. Louis, with average flight prices from Miami averaging around $297.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $339. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $537. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Miami in the morning is the least expensive time of day to depart. momondo users have found prices as low as $339 when looking at flights departing in the morning. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $427 per ticket.

What is the cheapest Miami to Lambert-St Louis flight route?

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

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Miami when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $362 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Miami for as low as $244 on momondo.

What cabin class options are available on Miami to Lambert-St Louis flights?

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

Can stopping save me money on Miami to St. Louis flights?

No. A direct flight is the cheapest option for a flight between Miami to St. Louis.

How have Miami to St. Louis flight prices changed over time?

As of November 2025, prices for Miami to St. Louis flights are approximately 30% cheaper when compared to flights at the same time last year.

When to book flights from Miami to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Miami to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Miami to St. Louis (MIA to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Miami to St. Louis

Best Price Found

$154

Fastest flight time

2h 55m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Miami in the past 72 hours is $154. The best round-trip flight deal from Miami to St. Louis found on momondo in the last 72 hours is $239.
The fastest flight from Miami to St. Louis takes 2h 55m
Direct flights go from Miami to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

  • How far is Miami to Lambert-St Louis by plane?

    A flight from Miami to Lambert-St Louis will travel around 1061.2 mi. 5h 17m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Miami Airport to Lambert-St Louis Airport?

    Prices for flights from Miami Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Miami Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Miami Airport to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Miami Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Miami to St. Louis?

  • What is the most popular airline from Miami to St. Louis?

Best airlines flying from Miami to St. Louis

Compare and see reviews for airlines that fly from Miami to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $80Free CancellationRating
6.3
8,122 reviews
Search Spirit Airlines flights
FrontierPriceFrom $164Free CancellationRating
5.8
3,115 reviews
Search Frontier flights
SouthwestPriceFrom $186Free CancellationRating
8.0
4,241 reviews
Search Southwest flights
DeltaPriceFrom $196Free CancellationRating
7.9
8,001 reviews
Search Delta flights
American AirlinesPriceFrom $212Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights

  • Southwest Flights From Miami to St. Louis

    Southwest operates around 6 flights from Miami to St. Louis every week. The average price of these flights found in the last 72 hours has been $351, but momondo users have found Southwest deals from Miami to St. Louis from as low as $186 round-trip. Southwest has been scored 8.0/10 in 4,241 reviews.

  • American Airlines Flights From Miami to St. Louis

    The best American Airlines deal for Miami to St. Louis flight tickets found on momondo in the last 72 hours was $212, round-trip. It should be noted that an average American Airlines flight deal for this route in this time was higher, at $377 round-trip. American Airlines operates 11 flights out of Miami into St. Louis in an average week, so prices vary by time and availability. 11,040 American Airlines reviews by users on momondo have scored the airline at 7.2/10.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Miami to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Miami to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from Miami to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Miami on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Miami to St. Louis?

Once all potential Miami to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Miami to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Miami. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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