What airlines fly to Caribbean Islands?

American Airlines, Frontier and Delta 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 51% of people opting to fly with this airline when traveling to Caribbean Islands. Keep in mind that there are 5 different airlines that fly to Caribbean Islands on a routine basis, so you have a few additional options to choose from.

How many flights depart from St. Louis to Caribbean Islands on average per week?

As of June 2026, there are 8 flights per week flying from St. Louis to Caribbean Islands. The most common day of the week flights depart is Sat, with 50% of flights taking off on this day.

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

Delta, Southwest, and American Airlines are the most popular carriers operating from Lambert-St Louis to Caribbean Islands

How many flights depart from St. Louis to Caribbean Islands on average per day?

As of June 2026, there are 1 flights per day flying from St. Louis to Caribbean Islands. The most common time of day flights depart is 10:00AM, with 100% of flights taking off at noon.

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 June 2026, there are 5 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.

$141 Cheap Flights from St. Louis to Caribbean Islands in 2026

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.

8:34 am - 9:55 pm

STL

SJU

12h 21m

2 stops

3:47 pm - 12:14 am

SJU

STL

9h 27m

2 stops

$326American Airlines

Fri, Aug 21 - Tue, Aug 25

10:44 am - 9:55 pm

STL

SJU

10h 11m

2 stops

6:27 am - 5:30 pm

SJU

STL

12h 03m

2 stops

$331American Airlines

Wed, Sep 2 - Wed, Sep 9

5:00 am - 4:11 pm

STL

SJU

10h 11m

1 stop

3:47 pm - 12:14 am

SJU

STL

9h 27m

2 stops

$336American Airlines

Fri, Aug 21 - Tue, Aug 25

3:41 pm - 5:02 am

STL

SJU

12h 21m

1 stop

6:45 am - 8:57 am

SJU

STL

27h 12m

2 stops

$359Frontier

Tue, Jul 28 - Tue, Aug 4

8:00 am - 8:38 pm

STL

SJU

11h 38m

2 stops

1:00 am - 10:12 am

SJU

STL

10h 12m

2 stops

$360United Airlines

Thu, Aug 27 - Sat, Aug 29

4:57 pm - 1:41 pm

STL

SJU

43h 44m

2 stops

4:08 pm - 11:59 pm

SJU

STL

8h 51m

1 stop

$362Frontier

Sat, Aug 8 - Wed, Aug 12

12:52 pm - 10:29 pm

STL

SJU

8h 37m

1 stop

5:59 pm - 11:42 pm

SJU

STL

6h 43m

1 stop

$367Delta

Thu, Sep 3 - Tue, Sep 8

7:05 am - 1:45 pm

STL

PLS

5h 40m

1 stop

2:40 pm - 12:05 am

PLS

STL

10h 25m

1 stop

$473Southwest

Mon, Nov 16 - Fri, Nov 20

6:00 am - 11:39 am

STL

GCM

5h 39m

1 stop

1:04 pm - 11:21 pm

GCM

STL

10h 17m

1 stop

$499Delta

Wed, Aug 19 - Tue, Aug 25

5:00 am - 3:30 pm

STL

GCM

10h 30m

2 stops

4:45 pm - 12:06 pm

GCM

STL

19h 21m

2 stops

$514United Airlines

Mon, Oct 26 - Fri, Oct 30

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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 4

STL10:35 amLambert-St Louis

12h 03m

2 stops

SJU11:38 pmSan Juan Luis Munoz Marin Intl

Oct 9

SJU3:51 pmSan Juan Luis Munoz Marin Intl

18h 49m

1 stop

STL9:40 amLambert-St Louis

$356

Frontier

Aug 8

STL4:57 pmLambert-St Louis

43h 44m

2 stops

SJU1:41 pmSan Juan Luis Munoz Marin Intl

Aug 12

SJU4:08 pmSan Juan Luis Munoz Marin Intl

8h 51m

1 stop

STL11:59 pmLambert-St Louis

$362

Frontier

Aug 9

STL6:34 pmLambert-St Louis

18h 42m

1 stop

SJU2:16 pmSan Juan Luis Munoz Marin Intl

Aug 13

SJU6:26 amSan Juan Luis Munoz Marin Intl

27h 31m

2 stops

STL8:57 amLambert-St Louis

$370

American Airlines flights from St. Louis to Caribbean Islands

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

American Airlines

Nov 2

STL6:45 pmLambert-St Louis

15h 22m

2 stops

STT12:07 pmSaint Thomas Island Cyril E King

Nov 6

STT4:18 pmSaint Thomas Island Cyril E King

18h 09m

2 stops

STL8:27 amLambert-St Louis

$284

American Airlines

Aug 21

STL8:34 amLambert-St Louis

12h 21m

2 stops

SJU9:55 pmSan Juan Luis Munoz Marin Intl

Aug 25

SJU3:47 pmSan Juan Luis Munoz Marin Intl

9h 27m

2 stops

STL12:14 amLambert-St Louis

$326

American Airlines

Sep 2

STL10:44 amLambert-St Louis

10h 11m

2 stops

SJU9:55 pmSan Juan Luis Munoz Marin Intl

Sep 9

SJU6:27 amSan Juan Luis Munoz Marin Intl

12h 03m

2 stops

STL5:30 pmLambert-St Louis

$331

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 - SJU

STLSJU

Lambert-St Louis

Fri 8/21

8:34 am-9:55 pm

2 stops12h 21m

San Juan Luis Munoz Marin Intl

Tue 8/25

3:47 pm-12:14 am

2 stops9h 27m

$326

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 9/2

10:44 am-9:55 pm

2 stops10h 11m

San Juan Luis Munoz Marin Intl

Wed 9/9

6:27 am-5:30 pm

2 stops12h 03m

$331

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 8/21

5:00 am-4:11 pm

1 stop10h 11m

San Juan Luis Munoz Marin Intl

Tue 8/25

3:47 pm-12:14 am

2 stops9h 27m

$336

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 7/28

3:41 pm-5:02 am

1 stop12h 21m

San Juan Luis Munoz Marin Intl

Tue 8/4

6:45 am-8:57 am

2 stops27h 12m

$359

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Thu 8/27

8:00 am-8:38 pm

2 stops11h 38m

San Juan Luis Munoz Marin Intl

Sat 8/29

1:00 am-10:12 am

2 stops10h 12m

$360

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 8/8

4:57 pm-1:41 pm

2 stops43h 44m

San Juan Luis Munoz Marin Intl

Wed 8/12

4:08 pm-11:59 pm

1 stop8h 51m

$362

Quickest round-trip

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Thu 9/3

12:52 pm-10:29 pm

1 stop8h 37m

San Juan Luis Munoz Marin Intl

Tue 9/8

5:59 pm-11:42 pm

1 stop6h 43m

$367

St. LouisProvidenciales

STL - PLS

STLPLS

Lambert-St Louis

Mon 11/16

7:05 am-1:45 pm

1 stop5h 40m

Providenciales

Fri 11/20

2:40 pm-12:05 am

1 stop10h 25m

$473

St. LouisGeorge Town

STL - GCM

STLGCM

Lambert-St Louis

Wed 8/19

6:00 am-11:39 am

1 stop5h 39m

George Town Owen Roberts Intl

Tue 8/25

1:04 pm-11:21 pm

1 stop10h 17m

$499

St. LouisGeorge Town

STL - GCM

STLGCM

Lambert-St Louis

Mon 10/26

5:00 am-3:30 pm

2 stops10h 30m

George Town Owen Roberts Intl

Fri 10/30

4:45 pm-12:06 pm

2 stops19h 21m

$514

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

Other information

What is the cheapest month to fly to Caribbean Islands?

The month of December is, on average, the cheapest month to fly to Caribbean Islands from St. Louis, with most prices found around $145. The month of March is another great option to travel to Caribbean Islands, with average flight prices from St. Louis averaging around $149.

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

Fly from Lambert-St Louis to Montego Bay Sangster 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 $420 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 $348 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

Fastest flight time	4h 20m
Direct flights	Mon, Tue, Thu, Sat and Sun
Airports in Caribbean Islands	99 airports

The fastest flight from St. Louis to Caribbean Islands takes 4h 20m

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

There are 99 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 June 2026, there are 5 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 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 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 $138	Free Cancellation	Rating 5.6 2,876 reviews	Search Frontier flights
Delta	PriceFrom $205	Free Cancellation	Rating 7.8 8,423 reviews	Search Delta flights
United Airlines	PriceFrom $225	Free Cancellation	Rating 7.4 9,868 reviews	Search United Airlines flights
Southwest	PriceFrom $246	Free Cancellation	Rating 7.9 4,242 reviews	Search Southwest flights
American Airlines	PriceFrom $250	Free Cancellation	Rating 7.1 11,723 reviews	Search American Airlines 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.