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

As of May 2026, there are 31 flights per week flying from St. Louis to Florida Keys. The most common day of the week flights depart is Wed, with 19% 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 73% 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?

Frontier, United Airlines, and Southwest 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 May 2026, there are 7 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.

$58 Cheap Flights from St. Louis to Florida Keys in 2026

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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.

4:19 pm - 11:25 am

STL

EYW

18h 06m

1 stop

12:07 pm - 11:57 pm

EYW

STL

12h 50m

1 stop

$226Multiple Airlines

Sat, May 30 - Fri, Jun 5

4:19 pm - 11:27 am

STL

EYW

18h 08m

1 stop

1:14 pm - 8:55 am

EYW

STL

20h 41m

2 stops

$229Multiple Airlines

Thu, May 28 - Tue, Jun 2

4:19 pm - 1:16 pm

STL

EYW

19h 57m

1 stop

11:46 am - 5:30 pm

EYW

STL

30h 44m

2 stops

$242Multiple Airlines

Wed, Jun 3 - Wed, Jun 10

4:19 pm - 1:16 pm

STL

EYW

19h 57m

1 stop

11:46 am - 5:30 pm

EYW

STL

30h 44m

2 stops

$253Multiple Airlines

Wed, Jun 3 - Wed, Jun 10

4:19 pm - 11:25 am

STL

EYW

18h 06m

1 stop

1:11 pm - 8:55 am

EYW

STL

20h 44m

2 stops

$257Multiple Airlines

Sat, May 30 - Fri, Jun 5

6:31 pm - 7:27 pm

STL

MIA

23h 56m

2 stops

5:26 pm - 8:52 am

MIA

STL

16h 26m

1 stop

$268Frontier

Sun, Jun 28 - Fri, Jul 3

8:16 pm - 8:14 pm

STL

MIA

22h 58m

2 stops

11:23 am - 5:33 pm

MIA

STL

7h 10m

1 stop

$269Frontier

Sat, May 23 - Tue, Jun 2

8:08 pm - 5:51 am

STL

MIA

8h 43m

1 stop

6:00 am - 7:23 pm

MIA

STL

14h 23m

1 stop

$270Frontier

Fri, Jul 24 - Mon, Jul 27

5:27 pm - 4:27 pm

STL

MIA

22h 00m

2 stops

6:20 am - 6:18 pm

MIA

STL

12h 58m

1 stop

$271Frontier

Mon, Jun 1 - Fri, Jun 12

1:27 pm - 7:49 pm

STL

EYW

5h 22m

1 stop

6:24 pm - 11:56 pm

EYW

STL

6h 32m

1 stop

$293Delta

Wed, Jun 3 - Wed, Jun 10

American Airlines flights from St. Louis to Florida Keys

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

American Airlines

Jun 2

STL5:15 amLambert-St Louis

2h 54m

MIA9:09 amMiami

Jun 9

MIA8:33 amMiami

3h 02m

STL10:35 amLambert-St Louis

$288

American Airlines

May 26

STL2:56 pmLambert-St Louis

6h 52m

1 stop

MIA10:48 pmMiami

Jun 4

MIA8:33 amMiami

3h 02m

STL10:35 amLambert-St Louis

$313

American Airlines

Jun 2

STL5:15 amLambert-St Louis

2h 54m

MIA9:09 amMiami

Jun 9

MIA3:40 pmMiami

6h 49m

1 stop

STL9:29 pmLambert-St Louis

$323

Frontier flights from St. Louis to Florida Keys

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

Frontier

Jun 28

STL6:31 pmLambert-St Louis

23h 56m

2 stops

MIA7:27 pmMiami

Jul 3

MIA5:26 pmMiami

16h 26m

1 stop

STL8:52 amLambert-St Louis

$268

Frontier

May 23

STL8:16 pmLambert-St Louis

22h 58m

2 stops

MIA8:14 pmMiami

Jun 2

MIA11:23 amMiami

7h 10m

1 stop

STL5:33 pmLambert-St Louis

$269

Frontier

Jul 24

STL8:08 pmLambert-St Louis

8h 43m

1 stop

MIA5:51 amMiami

Jul 27

MIA6:00 amMiami

14h 23m

1 stop

STL7:23 pmLambert-St Louis

$270

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisKey West

STL - EYW

STLEYW

Lambert-St Louis

Sat 5/30

4:19 pm-11:25 am

1 stop18h 06m

Key West

Fri 6/5

12:07 pm-11:57 pm

1 stop12h 50m

$226

St. LouisKey West

STL - EYW

STLEYW

Lambert-St Louis

Thu 5/28

4:19 pm-11:27 am

1 stop18h 08m

Key West

Tue 6/2

1:14 pm-8:55 am

2 stops20h 41m

$229

St. LouisKey West

STL - EYW

STLEYW

Lambert-St Louis

Wed 6/3

4:19 pm-1:16 pm

1 stop19h 57m

Key West

Wed 6/10

11:46 am-5:30 pm

2 stops30h 44m

$242

St. LouisKey West

STL - EYW

STLEYW

Lambert-St Louis

Wed 6/3

4:19 pm-1:16 pm

1 stop19h 57m

Key West

Wed 6/10

11:46 am-5:30 pm

2 stops30h 44m

$253

St. LouisKey West

STL - EYW

STLEYW

Lambert-St Louis

Sat 5/30

4:19 pm-11:25 am

1 stop18h 06m

Key West

Fri 6/5

1:11 pm-8:55 am

2 stops20h 44m

$257

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Sun 6/28

6:31 pm-7:27 pm

2 stops23h 56m

Miami

Fri 7/3

5:26 pm-8:52 am

1 stop16h 26m

$268

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Sat 5/23

8:16 pm-8:14 pm

2 stops22h 58m

Miami

Tue 6/2

11:23 am-5:33 pm

1 stop7h 10m

$269

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Fri 7/24

8:08 pm-5:51 am

1 stop8h 43m

Miami

Mon 7/27

6:00 am-7:23 pm

1 stop14h 23m

$270

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Mon 6/1

5:27 pm-4:27 pm

2 stops22h 00m

Miami

Fri 6/12

6:20 am-6:18 pm

1 stop12h 58m

$271

Quickest round-trip

St. LouisKey West

STL - EYW

STLEYW

Lambert-St Louis

Wed 6/3

1:27 pm-7:49 pm

1 stop5h 22m

Key West

Wed 6/10

6:24 pm-11:56 pm

1 stop6h 32m

$293

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 November is another great option to travel to Florida Keys, with average flight prices from St. Louis averaging around $98.

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 Sunday when prices can be found for as low as $506. The most expensive day to fly to Florida Keys is Tuesday, with ticket prices averaging around $599.

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 in the evening. momondo users have found flights departing from St. Louis to Florida Keys in the evening for as low as $408. 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 $547.

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 $399 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 $335 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

Fastest flight time	2h 35m
Direct flights	Every day
Airports in Florida Keys	3 airports

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 May 2026, there are 7 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 25.98% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 18.60%, Embraer 175 at 7.07%, and Airbus A319 at 6.00%.

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 7.1 11,666 reviews	Search American Airlines flights
Delta	PriceFrom $228	Free Cancellation	Rating 7.9 8,456 reviews	Search Delta flights
United Airlines	PriceFrom $262	Free Cancellation	Rating 7.4 9,684 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.