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

Frontier, United Airlines, and Delta 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 March 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 85% of flights taking off at noon.

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 6 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 March 2026, there are 10 flights per week flying from St. Louis to Caribbean Islands. The most common day of the week flights depart is Sat, with 40% of flights taking off on this day.

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 March 2026, there are 6 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.

$87 Cheap Flights from St. Louis to Caribbean Islands in 2026

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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.

1:03 pm - 8:24 pm

STL

SJU

6h 21m

1 stop

5:43 pm - 11:59 pm

SJU

STL

7h 16m

1 stop

$262Delta

Sat, May 2 - Wed, May 13

4:59 pm - 9:54 am

STL

SJU

15h 55m

1 stop

3:08 am - 11:19 pm

SJU

STL

21h 11m

1 stop

$263Frontier

Mon, Apr 20 - Mon, Apr 27

4:59 pm - 10:39 am

STL

SJU

16h 40m

1 stop

6:00 am - 12:21 am

SJU

STL

19h 21m

1 stop

$266Frontier

Sat, May 2 - Sat, May 9

11:42 am - 8:24 pm

STL

SJU

7h 42m

1 stop

7:30 am - 4:10 pm

SJU

STL

9h 40m

1 stop

$279Delta

Sat, May 2 - Fri, May 22

5:51 am - 6:10 pm

STL

SJU

11h 19m

2 stops

6:45 am - 5:21 pm

SJU

STL

11h 36m

1 stop

$282American Airlines

Sun, Apr 26 - Thu, Apr 30

5:24 am - 2:52 pm

STL

SJU

8h 28m

1 stop

7:00 pm - 10:16 am

SJU

STL

16h 16m

1 stop

$287American Airlines

Wed, Apr 15 - Wed, Apr 22

8:35 am - 3:56 pm

STL

NAS

6h 21m

1 stop

3:59 pm - 9:26 pm

NAS

STL

6h 27m

1 stop

$376United Airlines

Tue, Jun 30 - Fri, Jul 3

6:30 am - 3:20 pm

STL

AUA

7h 50m

1 stop

4:30 pm - 10:28 am

AUA

STL

18h 58m

1 stop

$493United Airlines

Wed, Apr 15 - Wed, Apr 22

7:20 pm - 1:30 pm

STL

SXM

17h 10m

2 stops

2:25 pm - 7:45 am

SXM

STL

18h 20m

2 stops

$518Southwest

Mon, Apr 20 - Wed, Apr 29

8:45 pm - 1:30 pm

STL

SXM

15h 45m

2 stops

2:25 pm - 11:40 pm

SXM

STL

10h 15m

1 stop

$528Southwest

Tue, May 5 - Fri, May 15

Delta flights from St. Louis to Caribbean Islands

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

Delta

May 2

STL1:03 pmLambert-St Louis

6h 21m

1 stop

SJU8:24 pmSan Juan Luis Munoz Marin Intl

May 13

SJU5:43 pmSan Juan Luis Munoz Marin Intl

7h 16m

1 stop

STL11:59 pmLambert-St Louis

$262

Delta

May 2

STL11:42 amLambert-St Louis

7h 42m

1 stop

SJU8:24 pmSan Juan Luis Munoz Marin Intl

May 22

SJU7:30 amSan Juan Luis Munoz Marin Intl

9h 40m

1 stop

STL4:10 pmLambert-St Louis

$279

Delta

May 6

STL7:25 amLambert-St Louis

7h 58m

1 stop

SJU4:23 pmSan Juan Luis Munoz Marin Intl

May 22

SJU5:43 pmSan Juan Luis Munoz Marin Intl

7h 16m

1 stop

STL11:59 pmLambert-St Louis

$289

American Airlines flights from St. Louis to Caribbean Islands

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

American Airlines

Apr 26

STL5:24 amLambert-St Louis

11h 46m

1 stop

SJU6:10 pmSan Juan Luis Munoz Marin Intl

Apr 30

SJU11:43 amSan Juan Luis Munoz Marin Intl

11h 41m

1 stop

STL10:24 pmLambert-St Louis

$282

American Airlines

Apr 15

STL5:24 amLambert-St Louis

8h 28m

1 stop

SJU2:52 pmSan Juan Luis Munoz Marin Intl

Apr 22

SJU7:00 pmSan Juan Luis Munoz Marin Intl

16h 16m

1 stop

STL10:16 amLambert-St Louis

$287

American Airlines

May 2

STL8:57 amLambert-St Louis

10h 54m

2 stops

SJU8:51 pmSan Juan Luis Munoz Marin Intl

May 19

SJU5:45 amSan Juan Luis Munoz Marin Intl

17h 39m

1 stop

STL10:24 pmLambert-St Louis

$322

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

Sat 5/2

1:03 pm-8:24 pm

1 stop6h 21m

San Juan Luis Munoz Marin Intl

Wed 5/13

5:43 pm-11:59 pm

1 stop7h 16m

$262

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 4/20

4:59 pm-9:54 am

1 stop15h 55m

San Juan Luis Munoz Marin Intl

Mon 4/27

3:08 am-11:19 pm

1 stop21h 11m

$263

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 5/2

4:59 pm-10:39 am

1 stop16h 40m

San Juan Luis Munoz Marin Intl

Sat 5/9

6:00 am-12:21 am

1 stop19h 21m

$266

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 5/2

11:42 am-8:24 pm

1 stop7h 42m

San Juan Luis Munoz Marin Intl

Fri 5/22

7:30 am-4:10 pm

1 stop9h 40m

$279

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sun 4/26

5:51 am-6:10 pm

2 stops11h 19m

San Juan Luis Munoz Marin Intl

Thu 4/30

6:45 am-5:21 pm

1 stop11h 36m

$282

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 4/15

5:24 am-2:52 pm

1 stop8h 28m

San Juan Luis Munoz Marin Intl

Wed 4/22

7:00 pm-10:16 am

1 stop16h 16m

$287

Quickest round-trip

St. LouisNassau

STL - NAS

STLNAS

Lambert-St Louis

Tue 6/30

8:35 am-3:56 pm

1 stop6h 21m

Nassau Intl

Fri 7/3

3:59 pm-9:26 pm

1 stop6h 27m

$376

St. LouisOranjestad

STL - AUA

STLAUA

Lambert-St Louis

Wed 4/15

6:30 am-3:20 pm

1 stop7h 50m

Oranjestad Reina Beatrix

Wed 4/22

4:30 pm-10:28 am

1 stop18h 58m

$493

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Mon 4/20

7:20 pm-1:30 pm

2 stops17h 10m

Simpson Bay Princess Juliana

Wed 4/29

2:25 pm-7:45 am

2 stops18h 20m

$518

St. LouisSimpson Bay

STL - SXM

STLSXM

Lambert-St Louis

Tue 5/5

8:45 pm-1:30 pm

2 stops15h 45m

Simpson Bay Princess Juliana

Fri 5/15

2:25 pm-11:40 pm

1 stop10h 15m

$528

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 September is, on average, the cheapest month to fly to Caribbean Islands from St. Louis, with most prices found around $219. The month of April is another great option to travel to Caribbean Islands, with average flight prices from St. Louis averaging around $345.

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

Fly from Lambert-St Louis to Punta Cana for the best Lambert-St Louis - Caribbean Islands flight prices

How far in advance should I book a flight 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 $426 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 $342 on momondo.

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

There is only 1 cabin class available to choose from on Lambert-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	3h 40m
Direct flights	Mon, Tue, Thu, Sat and Sun
Airports in Caribbean Islands	99 airports

The fastest flight from St. Louis to Caribbean Islands takes 3h 40m

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

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 March 2026, there are 6 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 25.78% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 19.65%, Airbus A321-100/200 at 6.49%, and Embraer 175 at 6.25%.

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 5.7 3,019 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $146	Free Cancellation	Rating 6.3 8,532 reviews	Search Spirit Airlines flights
Delta	PriceFrom $174	Free Cancellation	Rating 7.9 8,314 reviews	Search Delta flights
Southwest	PriceFrom $219	Free Cancellation	Rating 8.0 4,324 reviews	Search Southwest flights
United Airlines	PriceFrom $225	Free Cancellation	Rating 7.4 9,455 reviews	Search United Airlines flights
American Airlines	PriceFrom $228	Free Cancellation	Rating 7.1 11,486 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.