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

As of June 2026, there are 37 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 74% 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 June 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.

$84 Cheap Flights from St. Louis to Florida Keys in 2026

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.

5:02 pm - 11:25 am

STL

EYW

17h 23m

1 stop

11:46 am - 5:22 pm

EYW

STL

30h 36m

2 stops

$246Multiple Airlines

Sat, Aug 22 - Wed, Aug 26

4:57 pm - 11:05 pm

STL

MIA

5h 08m

1 stop

11:19 am - 5:37 pm

MIA

STL

7h 18m

1 stop

$250Frontier

Fri, Jul 17 - Tue, Jul 21

4:57 pm - 11:40 pm

STL

MIA

5h 43m

1 stop

6:00 am - 7:23 pm

MIA

STL

14h 23m

1 stop

$251Frontier

Sat, Jul 11 - Sat, Jul 18

8:08 pm - 4:33 pm

STL

MIA

19h 25m

2 stops

5:28 pm - 8:57 am

MIA

STL

16h 29m

1 stop

$252Frontier

Tue, Jul 14 - Tue, Jul 28

8:08 pm - 1:53 pm

STL

MIA

16h 45m

2 stops

5:28 pm - 8:57 am

MIA

STL

16h 29m

1 stop

$253Frontier

Wed, Jul 15 - Tue, Jul 21

7:10 pm - 6:30 am

STL

MIA

10h 20m

1 stop

6:00 am - 7:23 pm

MIA

STL

14h 23m

1 stop

$254Frontier

Sat, Jul 18 - Mon, Jul 27

8:08 pm - 5:51 am

STL

MIA

8h 43m

1 stop

6:00 am - 7:23 pm

MIA

STL

14h 23m

1 stop

$255Frontier

Fri, Aug 7 - Sat, Aug 15

6:54 am - 3:40 pm

STL

MIA

7h 46m

1 stop

11:22 am - 1:23 pm

MIA

STL

3h 01mnonstop

$257American Airlines

Wed, Sep 2 - Mon, Sep 14

5:00 am - 1:09 pm

STL

EYW

7h 09m

1 stop

7:03 pm - 10:40 pm

EYW

STL

4h 37m

1 stop

$293American Airlines

Tue, Aug 11 - Tue, Aug 18

1:04 pm - 7:57 pm

STL

EYW

5h 53m

1 stop

11:48 am - 4:17 pm

EYW

STL

5h 29m

1 stop

$326Delta

Sat, Aug 15 - Sat, Aug 22

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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

Sep 2

STL6:54 amLambert-St Louis

7h 46m

1 stop

MIA3:40 pmMiami

Sep 14

MIA11:22 amMiami

3h 01m

STL1:23 pmLambert-St Louis

$257

American Airlines

Aug 7

STL5:00 amLambert-St Louis

2h 53m

MIA8:53 amMiami

Aug 15

MIA8:41 amMiami

3h 04m

STL10:45 amLambert-St Louis

$280

American Airlines

Aug 4

STL11:00 amLambert-St Louis

2h 46m

MIA2:46 pmMiami

Aug 7

MIA8:40 pmMiami

3h 00m

STL10:40 pmLambert-St Louis

$282

Frontier flights from St. Louis to Florida Keys

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

Frontier

Jul 4

STL5:06 pmLambert-St Louis

28h 59m

1 stop

MIA11:05 pmMiami

Jul 11

MIA5:54 pmMiami

24h 43m

1 stop

STL5:37 pmLambert-St Louis

$250

Frontier

Jul 11

STL4:57 pmLambert-St Louis

5h 43m

1 stop

MIA11:40 pmMiami

Jul 18

MIA6:00 amMiami

14h 23m

1 stop

STL7:23 pmLambert-St Louis

$251

Frontier

Jul 14

STL8:08 pmLambert-St Louis

19h 25m

2 stops

MIA4:33 pmMiami

Jul 28

MIA5:28 pmMiami

16h 29m

1 stop

STL8:57 amLambert-St Louis

$252

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisKey West

STL - EYW

STLEYW

Lambert-St Louis

Sat 8/22

5:02 pm-11:25 am

1 stop17h 23m

Key West

Wed 8/26

11:46 am-5:22 pm

2 stops30h 36m

$246

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Fri 7/17

4:57 pm-11:05 pm

1 stop5h 08m

Miami

Tue 7/21

11:19 am-5:37 pm

1 stop7h 18m

$250

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Sat 7/11

4:57 pm-11:40 pm

1 stop5h 43m

Miami

Sat 7/18

6:00 am-7:23 pm

1 stop14h 23m

$251

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Tue 7/14

8:08 pm-4:33 pm

2 stops19h 25m

Miami

Tue 7/28

5:28 pm-8:57 am

1 stop16h 29m

$252

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Wed 7/15

8:08 pm-1:53 pm

2 stops16h 45m

Miami

Tue 7/21

5:28 pm-8:57 am

1 stop16h 29m

$253

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Sat 7/18

7:10 pm-6:30 am

1 stop10h 20m

Miami

Mon 7/27

6:00 am-7:23 pm

1 stop14h 23m

$254

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Fri 8/7

8:08 pm-5:51 am

1 stop8h 43m

Miami

Sat 8/15

6:00 am-7:23 pm

1 stop14h 23m

$255

Quickest round-trip

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Wed 9/2

6:54 am-3:40 pm

1 stop7h 46m

Miami

Mon 9/14

11:22 am-1:23 pm

Nonstop3h 01m

$257

St. LouisKey West

STL - EYW

STLEYW

Lambert-St Louis

Tue 8/11

5:00 am-1:09 pm

1 stop7h 09m

Key West

Tue 8/18

7:03 pm-10:40 pm

1 stop4h 37m

$293

St. LouisKey West

STL - EYW

STLEYW

Lambert-St Louis

Sat 8/15

1:04 pm-7:57 pm

1 stop5h 53m

Key West

Sat 8/22

11:48 am-4:17 pm

1 stop5h 29m

$326

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 Saturday when prices can be found for as low as $499. The most expensive day to fly to Florida Keys is Tuesday, with ticket prices averaging around $625.

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 $488. 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 $554.

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 $400 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 $348 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 June 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 24.83% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 17.02%, Embraer 175 at 7.88%, and Boeing 737-800 at 6.34%.

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 11,751 reviews	Search American Airlines flights
Delta	PriceFrom $240	Free Cancellation	Rating 7.8 8,432 reviews	Search Delta flights
United Airlines	PriceFrom $262	Free Cancellation	Rating 7.4 9,881 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.