What is the cheapest airline that flies from Lambert-St Louis to Caribbean Islands?

Frontier, American Airlines, and Air Canada are the most popular carriers operating from Lambert-St Louis to Caribbean Islands

What airlines fly to Caribbean Islands?

American Airlines, Frontier and Southwest are the top three most popular airlines that fly to Caribbean Islands from St. Louis according to our data. American Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Caribbean Islands. Keep in mind that there are 6 different airlines that fly to Caribbean Islands on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Lambert-St Louis Airport to Caribbean Islands were last updated today.

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

As of September 2026, there are 7 operators available to choose from for flights from Lambert-St Louis Airport to Caribbean Islands.

How old do you have to be to fly from Lambert-St Louis Airport to Caribbean Islands?

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 Caribbean Islands.

What documentation or ID do you need to fly to Caribbean Islands?

The required travel and health documents for your Caribbean Islands 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 Caribbean Islands. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$92 Cheap Flights from St. Louis to Caribbean Islands in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Caribbean Islands

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:35 pm - 4:06 pmSTL Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl

20h 31m1 stop Atlanta Hartsfield-Jackson

3:59 pm - 5:40 pmSJU San Juan Luis Munoz Marin Intl-STL Lambert-St Louis

27h 41m1 stop Atlanta Hartsfield-Jackson

$167Frontier

Fri, Oct 23 - Tue, Nov 3

6:35 pm - 1:31 pmSTL Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl

17h 56m2 stops Atlanta Hartsfield-Jackson Fort Lauderdale

12:59 am - 5:40 pmSJU San Juan Luis Munoz Marin Intl-STL Lambert-St Louis

17h 41m2 stops Philadelphia Atlanta Hartsfield-Jackson

$199Frontier

Wed, Oct 14 - Tue, Oct 20

6:15 pm - 9:30 amSTL Lambert-St Louis-NAS Nassau Intl

14h 15m1 stop Miami

2:44 pm - 9:47 pmNAS Nassau Intl-STL Lambert-St Louis

8h 03m1 stop Miami

$326American Airlines

Mon, Dec 7 - Wed, Dec 16

6:15 pm - 9:30 amSTL Lambert-St Louis-NAS Nassau Intl

14h 15m1 stop Miami

11:45 am - 9:57 pmNAS Nassau Intl-STL Lambert-St Louis

11h 12m1 stop Charlotte Douglas

$326American Airlines

Mon, Nov 2 - Wed, Nov 4

6:55 pm - 1:33 pmSTL Lambert-St Louis-NAS Nassau Intl

17h 38m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

2:40 pm - 10:30 pmNAS Nassau Intl-STL Lambert-St Louis

8h 50m1 stop Houston George Bush Intcntl

$326United Airlines

Mon, Dec 7 - Wed, Dec 16

4:05 pm - 8:25 pmSTL Lambert-St Louis-NAS Nassau Intl

27h 20m1 stop Toronto Pearson Intl

12:30 pm - 3:26 pmNAS Nassau Intl-STL Lambert-St Louis

27h 56m1 stop Toronto Pearson Intl

$365Air Canada

Sat, Nov 21 - Fri, Nov 27

4:05 pm - 8:25 pmSTL Lambert-St Louis-NAS Nassau Intl

27h 20m1 stop Toronto Pearson Intl

12:30 pm - 3:26 pmNAS Nassau Intl-STL Lambert-St Louis

27h 56m1 stop Toronto Pearson Intl

$365Air Canada

Fri, Nov 27 - Fri, Dec 4

6:00 am - 1:54 pmSTL Lambert-St Louis-NAS Nassau Intl

6h 54m1 stop Atlanta Hartsfield-Jackson

3:19 pm - 11:54 pmNAS Nassau Intl-STL Lambert-St Louis

9h 35m1 stop Atlanta Hartsfield-Jackson

$372Delta

Wed, Oct 28 - Sun, Nov 1

6:50 pm - 11:49 amSTL Lambert-St Louis-NAS Nassau Intl

15h 59m2 stops Chicago O'Hare Intl Newark

2:40 pm - 10:26 pmNAS Nassau Intl-STL Lambert-St Louis

8h 46m1 stop Houston George Bush Intcntl

$372United Airlines

Wed, Oct 28 - Sun, Nov 1

11:51 am - 9:00 pmSTL Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl

7h 09m1 stop Atlanta Hartsfield-Jackson

6:15 am - 2:43 pmSJU San Juan Luis Munoz Marin Intl-STL Lambert-St Louis

10h 28m1 stop Atlanta Hartsfield-Jackson

$396Delta

Thu, Feb 18 - Tue, Mar 2

Cheap last minute flights

Enter your travel dates to find the best prices.

6:39 pm - 1:52 amSTL Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl

6h 13m1 stop Orlando

6:33 am - 1:10 pmSJU San Juan Luis Munoz Marin Intl-STL Lambert-St Louis

7h 37m1 stop Atlanta Hartsfield-Jackson

$362Frontier

Thu, Sep 24 - Wed, Sep 30

6:39 pm - 1:52 amSTL Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl

6h 13m1 stop Orlando

6:42 pm - 5:54 pmSJU San Juan Luis Munoz Marin Intl-STL Lambert-St Louis

24h 12m1 stop Orlando

$399Frontier

Thu, Sep 24 - Wed, Sep 30

8:55 am - 5:30 pmSTL Lambert-St Louis-NAS Nassau Intl

7h 35m1 stop Toronto Pearson Intl

6:30 pm - 8:20 pmNAS Nassau Intl-STL Lambert-St Louis

26h 50m1 stop Toronto Pearson Intl

$408Air Canada

Sat, Sep 26 - Thu, Oct 1

8:55 am - 5:30 pmSTL Lambert-St Louis-NAS Nassau Intl

7h 35m1 stop Toronto Pearson Intl

2:20 pm - 2:00 pmNAS Nassau Intl-STL Lambert-St Louis

24h 40m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

$411Air Canada

Sat, Sep 26 - Thu, Oct 1

3:34 pm - 9:42 amSTL Lambert-St Louis-NAS Nassau Intl

17h 08m2 stops Dallas/Fort Worth Miami

10:32 am - 7:45 pmNAS Nassau Intl-STL Lambert-St Louis

10h 13m2 stops Miami Dallas/Fort Worth

$484American Airlines

Sat, Sep 26 - Thu, Oct 1

5:10 pm - 9:42 amSTL Lambert-St Louis-NAS Nassau Intl

15h 32m1 stop Miami

6:45 pm - 11:59 pmNAS Nassau Intl-STL Lambert-St Louis

6h 14m1 stop Miami

$520American Airlines

Sat, Sep 26 - Sat, Oct 3

6:00 am - 1:53 pmSTL Lambert-St Louis-NAS Nassau Intl

6h 53m1 stop Atlanta Hartsfield-Jackson

3:18 pm - 11:42 pmNAS Nassau Intl-STL Lambert-St Louis

9h 24m1 stop Atlanta Hartsfield-Jackson

$520Delta

Thu, Sep 24 - Fri, Sep 25

9:00 pm - 10:55 amSTL Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl

12h 55m1 stop Orlando

8:55 pm - 7:40 amSJU San Juan Luis Munoz Marin Intl-STL Lambert-St Louis

11h 45m1 stop Orlando

$597Southwest

Sun, Sep 27 - Mon, Sep 28

10:15 am - 9:10 pmSTL Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl

9h 55m2 stops Nashville Intl Orlando

10:00 am - 7:05 pmSJU San Juan Luis Munoz Marin Intl-STL Lambert-St Louis

10h 05m2 stops Orlando Chicago Midway

$602Southwest

Wed, Sep 23 - Fri, Sep 25

6:00 am - 2:12 pmSTL Lambert-St Louis-UVF Castries Hewanorra

7h 12m1 stop Atlanta Hartsfield-Jackson

3:32 pm - 11:42 pmUVF Castries Hewanorra-STL Lambert-St Louis

9h 10m1 stop Atlanta Hartsfield-Jackson

$1,220Delta

Thu, Sep 24 - Mon, Sep 28

Cheap direct flights

Enter your travel dates to find the best prices.

12:05 pm - 6:20 pmSTL Lambert-St Louis-PUJ Punta Cana

4h 15mnonstop

3:09 pm - 6:18 pmPUJ Punta Cana-STL Lambert-St Louis

5h 09mnonstop

$572Frontier

Wed, Nov 25 - Wed, Dec 2

11:57 am - 6:09 pmSTL Lambert-St Louis-PUJ Punta Cana

4h 12mnonstop

10:17 am - 1:16 pmPUJ Punta Cana-STL Lambert-St Louis

4h 59mnonstop

$572Frontier

Sat, Dec 12 - Sat, Dec 19

12:05 pm - 6:20 pmSTL Lambert-St Louis-PUJ Punta Cana

4h 15mnonstop

3:09 pm - 6:14 pmPUJ Punta Cana-STL Lambert-St Louis

5h 05mnonstop

$572Frontier

Sat, Nov 28 - Sat, Dec 5

11:57 am - 6:09 pmSTL Lambert-St Louis-PUJ Punta Cana

4h 12mnonstop

10:17 am - 1:16 pmPUJ Punta Cana-STL Lambert-St Louis

4h 59mnonstop

$572Frontier

Sat, Dec 12 - Sat, Dec 19

11:20 am - 5:32 pmSTL Lambert-St Louis-PUJ Punta Cana

4h 12mnonstop

2:25 pm - 5:22 pmPUJ Punta Cana-STL Lambert-St Louis

4h 57mnonstop

$577Frontier

Sat, Jan 16 - Wed, Jan 20

11:20 am - 5:32 pmSTL Lambert-St Louis-PUJ Punta Cana

4h 12mnonstop

2:25 pm - 5:22 pmPUJ Punta Cana-STL Lambert-St Louis

4h 57mnonstop

$577Frontier

Sat, Feb 13 - Wed, Feb 17

10:55 am - 5:15 pmSTL Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl

4h 20mnonstop

5:15 pm - 8:15 pmSJU San Juan Luis Munoz Marin Intl-STL Lambert-St Louis

5h 00mnonstop

$675Southwest

Sat, Dec 12 - Sat, Dec 19

10:55 am - 5:15 pmSTL Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl

4h 20mnonstop

5:15 pm - 8:15 pmSJU San Juan Luis Munoz Marin Intl-STL Lambert-St Louis

5h 00mnonstop

$698Southwest

Sat, Dec 12 - Sat, Dec 26

8:55 am - 1:25 pmSTL Lambert-St Louis-MBJ Montego Bay Sangster Intl

3h 30mnonstop

2:00 pm - 4:55 pmMBJ Montego Bay Sangster Intl-STL Lambert-St Louis

3h 55mnonstop

$1,090Southwest

Sat, Dec 19 - Sat, Dec 26

12:05 pm - 6:25 pmSTL Lambert-St Louis-SJU San Juan Luis Munoz Marin Intl

4h 20mnonstop

5:15 pm - 8:15 pmSJU San Juan Luis Munoz Marin Intl-STL Lambert-St Louis

5h 00mnonstop

$1,667Southwest

Sat, Dec 19 - Sat, Jan 2

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Frontier flights from St. Louis to Caribbean Islands

Our best Frontier deals on St. Louis to Caribbean Islands flight tickets

Frontier

Oct 23

STL6:35 pmLambert-St Louis

20h 31m

1 stop

SJU4:06 pmSan Juan Luis Munoz Marin Intl

Nov 3

SJU3:59 pmSan Juan Luis Munoz Marin Intl

27h 41m

1 stop

STL5:40 pmLambert-St Louis

$167

Frontier

Oct 14

STL6:35 pmLambert-St Louis

17h 56m

2 stops

SJU1:31 pmSan Juan Luis Munoz Marin Intl

Oct 20

SJU12:59 amSan Juan Luis Munoz Marin Intl

17h 41m

2 stops

STL5:40 pmLambert-St Louis

$199

Frontier

Oct 23

STL6:35 pmLambert-St Louis

20h 31m

1 stop

SJU4:06 pmSan Juan Luis Munoz Marin Intl

Nov 3

SJU4:52 pmSan Juan Luis Munoz Marin Intl

26h 48m

2 stops

STL5:40 pmLambert-St Louis

$204

Delta flights from St. Louis to Caribbean Islands

Our best Delta deals on St. Louis to Caribbean Islands flight tickets

Delta

Oct 25

STL6:00 amLambert-St Louis

4h 50m

1 stop

NAS11:50 amNassau Intl

Nov 3

NAS3:19 pmNassau Intl

7h 40m

1 stop

STL9:59 pmLambert-St Louis

$398

Delta

Oct 26

STL2:25 pmLambert-St Louis

20h 16m

2 stops

NAS11:41 amNassau Intl

Nov 3

NAS3:19 pmNassau Intl

7h 40m

1 stop

STL9:59 pmLambert-St Louis

$402

Delta

Oct 28

STL6:00 amLambert-St Louis

6h 54m

1 stop

NAS1:54 pmNassau Intl

Nov 1

NAS3:19 pmNassau Intl

9h 35m

1 stop

STL11:54 pmLambert-St Louis

$408

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Caribbean Islands that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisSan Juan

STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl

STLSJU

Lambert-St Louis

Fri 10/23

6:35 pm-4:06 pm

1 stop20h 31m

San Juan Luis Munoz Marin Intl

Tue 11/3

3:59 pm-5:40 pm

1 stop27h 41m

$167

St. LouisSan Juan

STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl

STLSJU

Lambert-St Louis

Wed 10/14

6:35 pm-1:31 pm

2 stops17h 56m

San Juan Luis Munoz Marin Intl

Tue 10/20

12:59 am-5:40 pm

2 stops17h 41m

$199

St. LouisNassau

STL Lambert-St Louis - NAS Nassau Intl

STLNAS

Lambert-St Louis

Mon 12/7

6:15 pm-9:30 am

1 stop14h 15m

Nassau Intl

Wed 12/16

2:44 pm-9:47 pm

1 stop8h 03m

$326

St. LouisNassau

STL Lambert-St Louis - NAS Nassau Intl

STLNAS

Lambert-St Louis

Mon 11/2

6:15 pm-9:30 am

1 stop14h 15m

Nassau Intl

Wed 11/4

11:45 am-9:57 pm

1 stop11h 12m

$326

St. LouisNassau

STL Lambert-St Louis - NAS Nassau Intl

STLNAS

Lambert-St Louis

Mon 12/7

6:55 pm-1:33 pm

2 stops17h 38m

Nassau Intl

Wed 12/16

2:40 pm-10:30 pm

1 stop8h 50m

$326

St. LouisNassau

STL Lambert-St Louis - NAS Nassau Intl

STLNAS

Lambert-St Louis

Sat 11/21

4:05 pm-8:25 pm

1 stop27h 20m

Nassau Intl

Fri 11/27

12:30 pm-3:26 pm

1 stop27h 56m

$365

St. LouisNassau

STL Lambert-St Louis - NAS Nassau Intl

STLNAS

Lambert-St Louis

Fri 11/27

4:05 pm-8:25 pm

1 stop27h 20m

Nassau Intl

Fri 12/4

12:30 pm-3:26 pm

1 stop27h 56m

$365

Quickest round-trip

St. LouisNassau

STL Lambert-St Louis - NAS Nassau Intl

STLNAS

Lambert-St Louis

Wed 10/28

6:00 am-1:54 pm

1 stop6h 54m

Nassau Intl

Sun 11/1

3:19 pm-11:54 pm

1 stop9h 35m

$372

St. LouisNassau

STL Lambert-St Louis - NAS Nassau Intl

STLNAS

Lambert-St Louis

Wed 10/28

6:50 pm-11:49 am

2 stops15h 59m

Nassau Intl

Sun 11/1

2:40 pm-10:26 pm

1 stop8h 46m

$372

St. LouisSan Juan

STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl

STLSJU

Lambert-St Louis

Thu 2/18

11:51 am-9:00 pm

1 stop7h 09m

San Juan Luis Munoz Marin Intl

Tue 3/2

6:15 am-2:43 pm

1 stop10h 28m

$396

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 Caribbean Islands

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

What is the cheapest month to fly to Caribbean Islands?

The month of February is, on average, the cheapest month to fly to Caribbean Islands from St. Louis, with most prices found around $584. The month of April is another great option to travel to Caribbean Islands, with average flight prices from St. Louis averaging around $585.

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

Fly from Lambert-St Louis to San Juan Luis Munoz Marin Intl for the best Lambert-St Louis - Caribbean Islands flight prices

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

You are more likely to see cheaper flights to Caribbean Islands from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Caribbean Islands for around $434 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Caribbean Islands from St. Louis for as low as $350 on momondo.

What cabin class options are available on St. Louis to Caribbean Islands flights?

There is only 1 cabin class available to choose from on St. Louis to Caribbean Islands 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 St. Louis to Caribbean Islands flights?

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

Cheap St. Louis to Caribbean Islands flight deals and tips

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

Best Price Found	$92
Fastest flight time	3h 30m
Direct flights	Tue, Thu, Sat and Sun
Airports in Caribbean Islands	100 airports

The best one-way flight to Caribbean Islands from St. Louis in the past 72 hours is $92. The best round-trip flight deal from St. Louis to Caribbean Islands found on momondo in the last 72 hours is $167.

The fastest flight from St. Louis to Caribbean Islands takes 3h 30m

Direct flights go from St. Louis to Caribbean Islands on Tuesday, Thursday, Saturday and Sunday. There are no airlines offering direct flights.

There are 100 airports in Caribbean Islands. From St. Louis there are direct flights to Montego Bay Sangster Intl (MBJ), Punta Cana (PUJ), San Juan Luis Munoz Marin Intl (SJU).

Search flight deals

Frequently asked questions about flying from St. Louis to Caribbean Islands

When did momondo last update prices for flights from Lambert-St Louis Airport to Caribbean Islands?
Prices for flights from Lambert-St Louis Airport to Caribbean Islands were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Caribbean Islands?
As of September 2026, there are 7 operators available to choose from for flights from Lambert-St Louis Airport to Caribbean Islands.
How old do you have to be to fly from Lambert-St Louis Airport to Caribbean Islands?
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 Caribbean Islands.
What documentation or ID do you need to fly to Caribbean Islands?
The required travel and health documents for your Caribbean Islands 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 Caribbean Islands. 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 Caribbean Islands?
momondo data reveals that the most frequently booked plane model on the route from St. Louis to Caribbean Islands 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 Caribbean Islands

Compare and see reviews for airlines that fly from St. Louis to Caribbean Islands with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $148	Free Cancellation	Rating 5.6 2,588 reviews	Search Frontier flights
United Airlines	PriceFrom $225	Free Cancellation	Rating 7.4 10,226 reviews	Search United Airlines flights
Delta	PriceFrom $225	Free Cancellation	Rating 7.8 8,591 reviews	Search Delta flights
American Airlines	PriceFrom $246	Free Cancellation	Rating 7.0 12,073 reviews	Search American Airlines flights
Southwest	PriceFrom $334	Free Cancellation	Rating 8.0 4,192 reviews	Search Southwest flights
JetBlue	PriceFrom $381	Free Cancellation	Rating 7.1 3,033 reviews	Search JetBlue flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Caribbean Islands. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Caribbean Islands from St. Louis with this policy.

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

momondo helps you find the best flight between St. Louis and Caribbean Islands by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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