How many flights depart from St. Louis to Florida Keys on average per week?

As of September 2026, there are 33 flights per week flying from St. Louis to Florida Keys. The most common day of the week flights depart is Fri, with 18% of flights taking off on this day.

What airlines fly to Florida Keys?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Florida Keys from St. Louis according to our data. American Airlines is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Florida Keys. Keep in mind that there are 3 different airlines that fly to Florida Keys on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Lambert-St Louis to Florida Keys?

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

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

Prices for flights from Lambert-St Louis Airport to Florida Keys were last updated today.

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

As of September 2026, there are 6 operators available to choose from for flights from Lambert-St Louis Airport to Florida Keys.

How old do you have to be to fly from Lambert-St Louis Airport to Florida Keys?

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 Lambert-St Louis Airport to Florida Keys.

What documentation or ID do you need to fly to Florida Keys?

The required travel and health documents for your Florida Keys trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Florida Keys. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$50 Cheap Flights from St. Louis to Florida Keys in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Florida Keys

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:30 pm - 12:38 pmSTL Lambert-St Louis-EYW Key West

19h 08m1 stop Orlando

10:04 am - 5:40 pmEYW Key West-STL Lambert-St Louis

8h 36m2 stops Tampa Atlanta Hartsfield-Jackson

$228Multiple Airlines

Sat, Oct 24 - Wed, Oct 28

4:26 pm - 12:56 pmSTL Lambert-St Louis-EYW Key West

19h 30m1 stop Orlando

10:04 am - 5:40 pmEYW Key West-STL Lambert-St Louis

8h 36m2 stops Tampa Atlanta Hartsfield-Jackson

$230Multiple Airlines

Sat, Nov 7 - Wed, Nov 11

6:15 pm - 9:55 pmSTL Lambert-St Louis-MIA Miami

2h 40mnonstop

12:15 pm - 7:20 pmMIA Miami-STL Lambert-St Louis

8h 05m1 stop Baltimore/Washington

$265Southwest

Tue, Jan 5 - Tue, Jan 12

6:15 pm - 10:00 pmSTL Lambert-St Louis-MIA Miami

2h 45mnonstop

5:35 pm - 10:30 pmMIA Miami-STL Lambert-St Louis

5h 55m1 stop Orlando

$265Southwest

Wed, Nov 18 - Wed, Dec 2

6:35 pm - 10:15 amSTL Lambert-St Louis-MIA Miami

14h 40m1 stop Atlanta Hartsfield-Jackson

5:15 am - 11:13 pmMIA Miami-STL Lambert-St Louis

18h 58m2 stops Atlanta Hartsfield-Jackson Orlando

$266Frontier

Fri, Oct 23 - Mon, Oct 26

6:35 pm - 9:29 pmSTL Lambert-St Louis-MIA Miami

25h 54m1 stop Atlanta Hartsfield-Jackson

10:55 pm - 5:40 pmMIA Miami-STL Lambert-St Louis

19h 45m1 stop Atlanta Hartsfield-Jackson

$266Frontier

Fri, Oct 16 - Sun, Oct 18

6:07 pm - 9:55 pmSTL Lambert-St Louis-MIA Miami

2h 48mnonstop

7:54 pm - 9:59 pmMIA Miami-STL Lambert-St Louis

3h 05mnonstop

$271American Airlines

Sat, Oct 10 - Tue, Oct 13

6:07 pm - 9:55 pmSTL Lambert-St Louis-MIA Miami

2h 48mnonstop

7:54 pm - 9:59 pmMIA Miami-STL Lambert-St Louis

3h 05mnonstop

$271American Airlines

Sat, Oct 24 - Sat, Oct 31

7:00 am - 3:19 pmSTL Lambert-St Louis-MIA Miami

7h 19m1 stop Atlanta Hartsfield-Jackson

7:00 am - 11:15 amMIA Miami-STL Lambert-St Louis

5h 15m1 stop Atlanta Hartsfield-Jackson

$275Delta

Wed, Oct 28 - Wed, Nov 11

12:00 pm - 7:43 pmSTL Lambert-St Louis-MIA Miami

6h 43m1 stop Atlanta Hartsfield-Jackson

6:04 am - 10:51 amMIA Miami-STL Lambert-St Louis

5h 47m1 stop Atlanta Hartsfield-Jackson

$275Delta

Wed, Oct 21 - Sat, Oct 31

Cheap last minute flights

Enter your travel dates to find the best prices.

8:10 pm - 12:46 amSTL Lambert-St Louis-MIA Miami

27h 36m1 stop Denver Intl

9:43 pm - 1:10 pmMIA Miami-STL Lambert-St Louis

16h 27m1 stop Atlanta Hartsfield-Jackson

$315Frontier

Sat, Sep 26 - Tue, Sep 29

2:29 pm - 8:33 pmSTL Lambert-St Louis-MIA Miami

5h 04m1 stop Atlanta Hartsfield-Jackson

9:43 pm - 1:10 pmMIA Miami-STL Lambert-St Louis

16h 27m1 stop Atlanta Hartsfield-Jackson

$337Frontier

Fri, Sep 25 - Tue, Sep 29

5:00 am - 8:44 amSTL Lambert-St Louis-MIA Miami

2h 44mnonstop

3:47 pm - 5:49 pmMIA Miami-STL Lambert-St Louis

3h 02mnonstop

$349American Airlines

Tue, Sep 22 - Wed, Oct 7

5:00 am - 8:44 amSTL Lambert-St Louis-MIA Miami

2h 44mnonstop

7:54 pm - 9:59 pmMIA Miami-STL Lambert-St Louis

3h 05mnonstop

$349American Airlines

Wed, Sep 23 - Tue, Oct 6

6:45 pm - 12:55 amSTL Lambert-St Louis-MIA Miami

5h 10m1 stop Atlanta Hartsfield-Jackson

12:05 pm - 4:28 pmMIA Miami-STL Lambert-St Louis

5h 23m1 stop Atlanta Hartsfield-Jackson

$371Delta

Wed, Sep 23 - Tue, Oct 6

10:05 am - 3:30 pmSTL Lambert-St Louis-MIA Miami

4h 25m1 stop Atlanta Hartsfield-Jackson

8:00 am - 1:53 pmMIA Miami-STL Lambert-St Louis

6h 53m1 stop Detroit Metropolitan Wayne County

$371Delta

Tue, Sep 22 - Wed, Oct 7

11:35 am - 3:15 pmSTL Lambert-St Louis-MIA Miami

2h 40mnonstop

12:50 pm - 2:40 pmMIA Miami-STL Lambert-St Louis

2h 50mnonstop

$447Southwest

Wed, Sep 23 - Tue, Sep 29

1:20 pm - 8:05 pmSTL Lambert-St Louis-MIA Miami

5h 45m1 stop Orlando

12:50 pm - 2:40 pmMIA Miami-STL Lambert-St Louis

2h 50mnonstop

$457Southwest

Wed, Sep 23 - Tue, Sep 29

11:15 am - 10:34 pmSTL Lambert-St Louis-MIA Miami

10h 19m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

12:29 pm - 5:01 pmMIA Miami-STL Lambert-St Louis

5h 32m1 stop Chicago O'Hare Intl

$499United Airlines

Tue, Sep 22 - Fri, Sep 25

11:15 am - 10:34 pmSTL Lambert-St Louis-MIA Miami

10h 19m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

4:01 pm - 9:21 pmMIA Miami-STL Lambert-St Louis

6h 20m1 stop Chicago O'Hare Intl

$499United Airlines

Tue, Sep 22 - Thu, Sep 24

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American Airlines flights from St. Louis to Florida Keys

Our best American Airlines deals on St. Louis to Florida Keys flight tickets

American Airlines

Nov 24

STL5:00 amLambert-St Louis

2h 50m

MIA8:50 amMiami

Dec 1

MIA3:17 pmMiami

3h 08m

STL5:25 pmLambert-St Louis

$271

American Airlines

Oct 22

STL6:07 pmLambert-St Louis

2h 48m

MIA9:55 pmMiami

Oct 26

MIA7:54 pmMiami

3h 05m

STL9:59 pmLambert-St Louis

$282

American Airlines

Oct 10

STL6:07 pmLambert-St Louis

2h 48m

MIA9:55 pmMiami

Oct 17

MIA6:57 amMiami

6h 38m

1 stop

STL12:35 pmLambert-St Louis

$284

Delta flights from St. Louis to Florida Keys

Our best Delta deals on St. Louis to Florida Keys flight tickets

Delta

Jan 23

STL11:51 amLambert-St Louis

5h 58m

1 stop

MIA6:49 pmMiami

Jan 29

MIA5:55 pmMiami

6h 44m

1 stop

STL11:39 pmLambert-St Louis

$278

Delta

Oct 10

STL5:38 pmLambert-St Louis

6h 15m

1 stop

MIA12:53 amMiami

Oct 13

MIA1:19 pmMiami

8h 32m

1 stop

STL8:51 pmLambert-St Louis

$291

Delta

Dec 10

STL2:17 pmLambert-St Louis

6h 14m

1 stop

MIA9:31 pmMiami

Dec 14

MIA7:51 pmMiami

5h 14m

1 stop

STL12:05 amLambert-St Louis

$298

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisKey West

STL Lambert-St Louis - EYW Key West

STLEYW

Lambert-St Louis

Sat 10/24

4:30 pm-12:38 pm

1 stop19h 08m

Key West

Wed 10/28

10:04 am-5:40 pm

2 stops8h 36m

$228

St. LouisKey West

STL Lambert-St Louis - EYW Key West

STLEYW

Lambert-St Louis

Sat 11/7

4:26 pm-12:56 pm

1 stop19h 30m

Key West

Wed 11/11

10:04 am-5:40 pm

2 stops8h 36m

$230

St. LouisMiami

STL Lambert-St Louis - MIA Miami

STLMIA

Lambert-St Louis

Tue 1/5

6:15 pm-9:55 pm

Nonstop2h 40m

Miami

Tue 1/12

12:15 pm-7:20 pm

1 stop8h 05m

$265

St. LouisMiami

STL Lambert-St Louis - MIA Miami

STLMIA

Lambert-St Louis

Wed 11/18

6:15 pm-10:00 pm

Nonstop2h 45m

Miami

Wed 12/2

5:35 pm-10:30 pm

1 stop5h 55m

$265

St. LouisMiami

STL Lambert-St Louis - MIA Miami

STLMIA

Lambert-St Louis

Fri 10/23

6:35 pm-10:15 am

1 stop14h 40m

Miami

Mon 10/26

5:15 am-11:13 pm

2 stops18h 58m

$266

St. LouisMiami

STL Lambert-St Louis - MIA Miami

STLMIA

Lambert-St Louis

Fri 10/16

6:35 pm-9:29 pm

1 stop25h 54m

Miami

Sun 10/18

10:55 pm-5:40 pm

1 stop19h 45m

$266

Quickest round-trip

St. LouisMiami

STL Lambert-St Louis - MIA Miami

STLMIA

Lambert-St Louis

Sat 10/10

6:07 pm-9:55 pm

Nonstop2h 48m

Miami

Tue 10/13

7:54 pm-9:59 pm

Nonstop3h 05m

$271

St. LouisMiami

STL Lambert-St Louis - MIA Miami

STLMIA

Lambert-St Louis

Sat 10/24

6:07 pm-9:55 pm

Nonstop2h 48m

Miami

Sat 10/31

7:54 pm-9:59 pm

Nonstop3h 05m

$271

St. LouisMiami

STL Lambert-St Louis - MIA Miami

STLMIA

Lambert-St Louis

Wed 10/28

7:00 am-3:19 pm

1 stop7h 19m

Miami

Wed 11/11

7:00 am-11:15 am

1 stop5h 15m

$275

St. LouisMiami

STL Lambert-St Louis - MIA Miami

STLMIA

Lambert-St Louis

Wed 10/21

12:00 pm-7:43 pm

1 stop6h 43m

Miami

Sat 10/31

6:04 am-10:51 am

1 stop5h 47m

$275

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Florida Keys

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

Prices

Airlines

Other information

What is the cheapest month to fly to Florida Keys?

The month of September is another great option to travel to Florida Keys, with average flight prices from St. Louis averaging around $379.

What is the cheapest day to depart on your flight to Florida Keys?

The cheapest day to depart from St. Louis to Florida Keys is on a Monday when prices can be found for as low as $490. The most expensive day to fly to Florida Keys is Tuesday, with ticket prices averaging around $638.

What is the cheapest time of day to depart on your flight to Florida Keys?

According to our data, the cheapest time of day to fly to Florida Keys is at noon. momondo users have found flights departing from St. Louis to Florida Keys at noon for as low as $485. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $550.

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

You are more likely to see cheaper flights to Florida Keys from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Florida Keys for around $412 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Florida Keys from St. Louis for as low as $347 on momondo.

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

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

Cheap St. Louis to Florida Keys flight deals and tips

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

Best Price Found	$50
Fastest flight time	2h 35m
Direct flights	Every day
Airports in Florida Keys	3 airports

The best one-way flight to Florida Keys from St. Louis in the past 72 hours is $50. The best round-trip flight deal from St. Louis to Florida Keys found on momondo in the last 72 hours is $228.

The fastest flight from St. Louis to Florida Keys takes 2h 35m

Direct flights go from St. Louis to Florida Keys every day.

There are 3 airports in Florida Keys. From St. Louis there are direct flights to Miami (MIA).

Search flight deals

Frequently asked questions about flying from St. Louis to Florida Keys

When did momondo last update prices for flights from Lambert-St Louis Airport to Florida Keys?
Prices for flights from Lambert-St Louis Airport to Florida Keys were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Florida Keys?
As of September 2026, there are 6 operators available to choose from for flights from Lambert-St Louis Airport to Florida Keys.
How old do you have to be to fly from Lambert-St Louis Airport to Florida Keys?
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 Lambert-St Louis Airport to Florida Keys.
What documentation or ID do you need to fly to Florida Keys?
The required travel and health documents for your Florida Keys trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Florida Keys. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from St. Louis to Florida Keys?
momondo data reveals that the most frequently booked plane model on the route from St. Louis to Florida Keys is Boeing 737 MAX 8, representing 25.64% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 17.99%, Embraer 175 at 7.96%, and Airbus A319 at 7.04%.

Best airlines flying from St. Louis to Florida Keys

Compare and see reviews for airlines that fly from St. Louis to Florida Keys with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $222	Free Cancellation	Rating 7.0 12,077 reviews	Search American Airlines flights
Delta	PriceFrom $255	Free Cancellation	Rating 7.8 8,592 reviews	Search Delta flights
United Airlines	PriceFrom $292	Free Cancellation	Rating 7.4 10,227 reviews	Search United Airlines flights

Why use momondo?

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

Finding the right flight to Florida Keys from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Florida Keys quick and easy, saving you time and money.

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

Flights from St. Louis to Florida Keys with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential St. Louis to Florida Keys 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 St. Louis to Florida Keys right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Florida Keys flights. All you need is a valid email address and we will do the rest; it is that quick and easy.