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Cheap flights from St. Louis to Caribbean from $103

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Caribbean departing on 10/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Caribbean

Cheap round-trip flights

Southwest Logo
8:55 am - 10:45 pmSTL-SJU
12h 50m2 stops
Southwest Logo
5:45 am - 5:05 pmSJU-STL
12h 20m1 stop
$205Southwest
Find Deal
Tue, Oct 21 - Sat, Oct 25
Delta Logo
1:26 pm - 10:00 pmSTL-SJU
7h 34m1 stop
Delta Logo
12:58 pm - 11:24 pmSJU-STL
11h 26m1 stop
$215Delta
Find Deal
Mon, Sep 15 - Fri, Sep 19
Spirit Airlines Logo
7:00 pm - 9:44 amSTL-STT
13h 44m1 stop
Spirit Airlines Logo
10:49 am - 5:55 pmSTT-STL
8h 06m1 stop
$233Spirit Airlines
Find Deal
Sat, Oct 18 - Sat, Oct 25
Frontier Logo
5:40 pm - 9:04 amSTL-SJU
14h 24m1 stop
Frontier Logo
9:30 pm - 11:47 pmSJU-STL
27h 17m1 stop
$239Frontier
Find Deal
Wed, Aug 13 - Sat, Aug 16
Frontier Logo
5:40 pm - 2:39 amSTL-SJU
7h 59m1 stop
Frontier Logo
8:23 pm - 1:07 pmSJU-STL
17h 44m1 stop
$245Frontier
Find Deal
Tue, Aug 12 - Sat, Aug 23
United Airlines Logo
10:30 am - 10:22 pmSTL-SJU
9h 52m2 stops
United Airlines Logo
8:35 am - 2:18 pmSJU-STL
7h 43m1 stop
$246United Airlines
Find Deal
Wed, Jan 21 - Sat, Jan 24
Spirit Airlines Logo
2:30 pm - 12:56 amSTL-SJU
9h 26m2 stops
Spirit Airlines Logo
2:11 am - 1:32 pmSJU-STL
12h 21m2 stops
$249Spirit Airlines
Find Deal
Sun, Aug 24 - Thu, Aug 28
United Airlines Logo
6:15 am - 3:42 pmSTL-SJU
8h 27m1 stop
United Airlines Logo
1:05 am - 2:27 pmSJU-STL
14h 22m2 stops
$286United Airlines
Find Deal
Sat, Sep 20 - Fri, Oct 24
American Airlines Logo
6:00 am - 10:49 pmSTL-SJU
15h 49m1 stop
American Airlines Logo
8:30 am - 8:47 pmSJU-STL
13h 17m1 stop
$300American Airlines
Find Deal
Fri, Aug 22 - Fri, Aug 29
American Airlines Logo
6:00 am - 11:59 pmSTL-SJU
16h 59m1 stop
American Airlines Logo
5:30 am - 4:03 pmSJU-STL
11h 33m1 stop
$307American Airlines
Find Deal
Fri, Oct 17 - Sun, Oct 19

Southwest flights from St. Louis to Caribbean

Our best Southwest deals on St. Louis to Caribbean flight tickets
Southwest
Oct 21
STL8:55 amLambert-St Louis
12h 50m
2 stops
SJU10:45 pmSan Juan Luis Munoz Marin Intl
Oct 25
SJU5:45 amSan Juan Luis Munoz Marin Intl
12h 20m
1 stop
STL5:05 pmLambert-St Louis
$205
Find similar
Southwest
Sep 17
STL2:15 pmLambert-St Louis
7h 15m
1 stop
SJU10:30 pmSan Juan Luis Munoz Marin Intl
Sep 24
SJU3:05 pmSan Juan Luis Munoz Marin Intl
7h 50m
1 stop
STL9:55 pmLambert-St Louis
$260
Find similar
Southwest
Aug 23
STL6:25 amLambert-St Louis
6h 20m
1 stop
PUJ1:45 pmPunta Cana
Aug 26
PUJ3:05 pmPunta Cana
7h 50m
1 stop
STL9:55 pmLambert-St Louis
$511
Find similar

Frontier flights from St. Louis to Caribbean

Our best Frontier deals on St. Louis to Caribbean flight tickets
Frontier
Aug 13
STL5:40 pmLambert-St Louis
14h 24m
1 stop
SJU9:04 amSan Juan Luis Munoz Marin Intl
Aug 16
SJU9:30 pmSan Juan Luis Munoz Marin Intl
27h 17m
1 stop
STL11:47 pmLambert-St Louis
$239
Find similar
Frontier
Aug 12
STL5:40 pmLambert-St Louis
7h 59m
1 stop
SJU2:39 amSan Juan Luis Munoz Marin Intl
Aug 23
SJU8:23 pmSan Juan Luis Munoz Marin Intl
17h 44m
1 stop
STL1:07 pmLambert-St Louis
$245
Find similar
Frontier
Nov 1
STL5:48 pmLambert-St Louis
20h 49m
1 stop
SJU3:37 pmSan Juan Luis Munoz Marin Intl
Nov 8
SJU8:03 amSan Juan Luis Munoz Marin Intl
10h 50m
1 stop
STL4:53 pmLambert-St Louis
$250
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Caribbean that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from St. Louis to Caribbean that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 10/21

8:55 am-10:45 pm

2 stops12h 50m

San Juan Luis Munoz Marin Intl

Sat 10/25

5:45 am-5:05 pm

1 stop12h 20m

$205

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 9/15

1:26 pm-10:00 pm

1 stop7h 34m

San Juan Luis Munoz Marin Intl

Fri 9/19

12:58 pm-11:24 pm

1 stop11h 26m

$215

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sat 10/18

7:00 pm-9:44 am

1 stop13h 44m

Saint Thomas Island Cyril E King

Sat 10/25

10:49 am-5:55 pm

1 stop8h 06m

$233

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 8/13

5:40 pm-9:04 am

1 stop14h 24m

San Juan Luis Munoz Marin Intl

Sat 8/16

9:30 pm-11:47 pm

1 stop27h 17m

$239

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 8/12

5:40 pm-2:39 am

1 stop7h 59m

San Juan Luis Munoz Marin Intl

Sat 8/23

8:23 pm-1:07 pm

1 stop17h 44m

$245

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 1/21

10:30 am-10:22 pm

2 stops9h 52m

San Juan Luis Munoz Marin Intl

Sat 1/24

8:35 am-2:18 pm

1 stop7h 43m

$246

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sun 8/24

2:30 pm-12:56 am

2 stops9h 26m

San Juan Luis Munoz Marin Intl

Thu 8/28

2:11 am-1:32 pm

2 stops12h 21m

$249

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 9/20

6:15 am-3:42 pm

1 stop8h 27m

San Juan Luis Munoz Marin Intl

Fri 10/24

1:05 am-2:27 pm

2 stops14h 22m

$286

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 8/22

6:00 am-10:49 pm

1 stop15h 49m

San Juan Luis Munoz Marin Intl

Fri 8/29

8:30 am-8:47 pm

1 stop13h 17m

$300

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 10/17

6:00 am-11:59 pm

1 stop16h 59m

San Juan Luis Munoz Marin Intl

Sun 10/19

5:30 am-4:03 pm

1 stop11h 33m

$307

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from St. Louis to Caribbean

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

What is the cheapest month to fly to Caribbean?

In general, September is the cheapest month to fly from St. Louis to Caribbean. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $364. If you don’t want to visit Caribbean in September, then you should wait until April to fly from St. Louis, when ticket prices are also cheap, with an average price of $369.

What is the cheapest day to depart on your flight to Caribbean?

The cheapest day to depart from St. Louis to Caribbean is on a Wednesday when prices can be found for as low as $404. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $641. These prices are subject to change though, so be sure to set up a Price Alert for flights to Caribbean.

What is the cheapest time of day to depart on your flight to Caribbean?

In the evening is the cheapest time of day to fly from St. Louis to Caribbean when you can find flight prices for as low as $310. Flying to Caribbean in the evening is an ideal time because this is during off-peak travel hours. Flights at noon are often more expensive with an average ticket price of $660.

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

Fly from Lambert-St Louis to Montego Bay Sangster Intl for the best Lambert-St Louis - Caribbean flight prices

How far in advance should I book a flight to Caribbean?

You are more likely to see cheaper flights to Caribbean from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Caribbean for around $448 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Caribbean from St. Louis for as low as $305 on momondo.

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

There are 1 cabin classes available to choose from on Lambert-St Louis to Caribbean 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 flights?

You could potentially save up to 41% on your flight if you consider stops on a St. Louis to Caribbean flight.

Cheap St. Louis to Caribbean flight deals and tips

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

Best Price Found

$103

Fastest flight time

4h 42m

Direct flights

Tue, Thu, Sat and Sun

Airports in Caribbean

7 airports
The best one-way flight to Caribbean from St. Louis in the past 72 hours is $103. The best round-trip flight deal from St. Louis to Caribbean found on momondo in the last 72 hours is $205.
The fastest flight from St. Louis to Caribbean takes 4h 42m
Direct flights go from St. Louis to Caribbean on Tuesday, Thursday, Saturday and Sunday. Airlines offering direct flights are: Southwest and Frontier.
There are 7 airports near Caribbean: Nassau Intl (NAS), Santo Domingo Las Americas (SDQ), Saint Thomas Island Cyril E King (STT), Montego Bay Sangster Intl (MBJ), Punta Cana (PUJ), Georgetown Exuma Intl (GGT), 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?

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Caribbean.

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

    The necessary travel and health documents for your Caribbean trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to Caribbean?

Best airlines flying from St. Louis to Caribbean

Compare and see reviews for airlines that fly from St. Louis to Caribbean with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $140Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $155Free CancellationRating
6.3
8,048 reviews
Search Spirit Airlines flights
DeltaPriceFrom $218Free CancellationRating
8.0
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $219Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
SouthwestPriceFrom $219Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
American AirlinesPriceFrom $255Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Caribbean. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Caribbean from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between St. Louis and Caribbean 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 right now. Can momondo alert me if prices change?

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

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Find better results for your trip to Caribbean

Popular cities in Caribbean

Popular flights according to clicks in the last 7 days on momondo
Flights to San Juanfrom $105
Flights to Punta Canafrom $195
Flights to Santo Domingofrom $197
Flights to Montego Bayfrom $212
Flights to Oranjestadfrom $280
Flights to Nassaufrom $266
Flights to Saint Thomas Islandfrom $152
Flights to Kingstonfrom $248
Flights to Port of Spainfrom $269
Flights to Simpson Bayfrom $237
Flights to Willemstadfrom $262
Flights to Santiago de los Caballerosfrom $207