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Cheap flights from St. Louis to Caribbean from $86

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 1/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Caribbean

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
3:49 pm - 2:53 am
STL
-
SJU
9h 04m1 stop
Frontier Logo
11:07 am - 10:27 pm
SJU
-
STL
13h 20m1 stop
$171Frontier
Tue, Feb 24 - Wed, Feb 25
Frontier Logo
12:12 pm - 9:54 am
STL
-
SJU
19h 42m1 stop
Frontier Logo
8:00 am - 11:33 pm
SJU
-
STL
17h 33m1 stop
$172Frontier
Sat, Jan 24 - Wed, Jan 28
Multiple Airlines Logo
3:49 pm - 2:31 pm
STL
-
STT
20h 42m1 stop
Multiple Airlines Logo
3:36 pm - 11:59 pm
STT
-
STL
10h 23m1 stop
$313Multiple Airlines
Wed, Feb 18 - Thu, Feb 26
Multiple Airlines Logo
3:49 pm - 2:31 pm
STL
-
STT
20h 42m1 stop
Multiple Airlines Logo
3:36 pm - 10:27 pm
STT
-
STL
8h 51m1 stop
$314Multiple Airlines
Wed, Feb 18 - Wed, Feb 25
American Airlines Logo
6:02 pm - 10:53 am
STL
-
NAS
15h 51m1 stop
American Airlines Logo
12:09 pm - 5:23 pm
NAS
-
STL
6h 14m1 stop
$361American Airlines
Sun, Jan 18 - Wed, Jan 21
United Airlines Logo
6:30 am - 4:00 pm
STL
-
PLS
8h 30m2 stops
United Airlines Logo
2:30 pm - 11:59 pm
PLS
-
STL
10h 29m1 stop
$364United Airlines
Sun, Feb 1 - Fri, Feb 6
American Airlines Logo
6:52 am - 8:19 pm
STL
-
NAS
12h 27m2 stops
American Airlines Logo
7:45 am - 3:04 pm
NAS
-
STL
8h 19m2 stops
$365American Airlines
Sun, Jan 18 - Wed, Jan 21
United Airlines Logo
6:30 am - 4:00 pm
STL
-
PLS
8h 30m2 stops
United Airlines Logo
5:06 pm - 2:28 pm
PLS
-
STL
22h 22m2 stops
$369United Airlines
Sun, Feb 1 - Fri, Feb 6
Delta Logo
6:00 am - 12:53 pm
STL
-
MBJ
5h 53m1 stop
Delta Logo
2:19 pm - 11:36 pm
MBJ
-
STL
10h 17m1 stop
$391Delta
Wed, Feb 18 - Wed, Feb 25
Delta Logo
6:00 am - 2:30 pm
STL
-
PLS
7h 30m1 stop
Delta Logo
3:50 pm - 11:38 pm
PLS
-
STL
8h 48m1 stop
$410Delta
Mon, May 11 - Sat, May 16

Frontier flights from St. Louis to Caribbean

Our best Frontier deals on St. Louis to Caribbean flight tickets
Frontier
Feb 24
STL3:49 pmLambert-St Louis
9h 04m
1 stop
SJU2:53 amSan Juan Luis Munoz Marin Intl
Feb 25
SJU11:07 amSan Juan Luis Munoz Marin Intl
13h 20m
1 stop
STL10:27 pmLambert-St Louis
$171
Find similar
Frontier
Jan 24
STL12:12 pmLambert-St Louis
19h 42m
1 stop
SJU9:54 amSan Juan Luis Munoz Marin Intl
Jan 28
SJU8:00 amSan Juan Luis Munoz Marin Intl
17h 33m
1 stop
STL11:33 pmLambert-St Louis
$172
Find similar
Frontier
Feb 23
STL3:49 pmLambert-St Louis
9h 04m
1 stop
SJU2:53 amSan Juan Luis Munoz Marin Intl
Feb 25
SJU5:25 pmSan Juan Luis Munoz Marin Intl
7h 02m
1 stop
STL10:27 pmLambert-St Louis
$176
Find similar

American Airlines flights from St. Louis to Caribbean

Our best American Airlines deals on St. Louis to Caribbean flight tickets
American Airlines
Feb 26
STL2:00 pmLambert-St Louis
7h 44m
1 stop
SJU11:44 pmSan Juan Luis Munoz Marin Intl
Mar 7
SJU7:00 pmSan Juan Luis Munoz Marin Intl
16h 32m
1 stop
STL9:32 amLambert-St Louis
$296
Find similar
American Airlines
Jan 18
STL6:02 pmLambert-St Louis
15h 51m
1 stop
NAS10:53 amNassau Intl
Jan 21
NAS12:09 pmNassau Intl
6h 14m
1 stop
STL5:23 pmLambert-St Louis
$361
Find similar
American Airlines
Jan 18
STL9:54 amLambert-St Louis
9h 25m
2 stops
NAS8:19 pmNassau Intl
Jan 21
NAS2:58 pmNassau Intl
10h 01m
1 stop
STL11:59 pmLambert-St Louis
$365
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 December 23, 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 2/24

3:49 pm-2:53 am

1 stop9h 04m

San Juan Luis Munoz Marin Intl

Wed 2/25

11:07 am-10:27 pm

1 stop13h 20m

$171

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 1/24

12:12 pm-9:54 am

1 stop19h 42m

San Juan Luis Munoz Marin Intl

Wed 1/28

8:00 am-11:33 pm

1 stop17h 33m

$172

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Wed 2/18

3:49 pm-2:31 pm

1 stop20h 42m

Saint Thomas Island Cyril E King

Thu 2/26

3:36 pm-11:59 pm

1 stop10h 23m

$313

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Wed 2/18

3:49 pm-2:31 pm

1 stop20h 42m

Saint Thomas Island Cyril E King

Wed 2/25

3:36 pm-10:27 pm

1 stop8h 51m

$314

St. LouisNassau

STL - NAS

STLNAS

Lambert-St Louis

Sun 1/18

6:02 pm-10:53 am

1 stop15h 51m

Nassau Intl

Wed 1/21

12:09 pm-5:23 pm

1 stop6h 14m

$361

St. LouisProvidenciales

STL - PLS

STLPLS

Lambert-St Louis

Sun 2/1

6:30 am-4:00 pm

2 stops8h 30m

Providenciales

Fri 2/6

2:30 pm-11:59 pm

1 stop10h 29m

$364

St. LouisNassau

STL - NAS

STLNAS

Lambert-St Louis

Sun 1/18

6:52 am-8:19 pm

2 stops12h 27m

Nassau Intl

Wed 1/21

7:45 am-3:04 pm

2 stops8h 19m

$365

St. LouisProvidenciales

STL - PLS

STLPLS

Lambert-St Louis

Sun 2/1

6:30 am-4:00 pm

2 stops8h 30m

Providenciales

Fri 2/6

5:06 pm-2:28 pm

2 stops22h 22m

$369

St. LouisMontego Bay

STL - MBJ

STLMBJ

Lambert-St Louis

Wed 2/18

6:00 am-12:53 pm

1 stop5h 53m

Montego Bay Sangster Intl

Wed 2/25

2:19 pm-11:36 pm

1 stop10h 17m

$391

St. LouisProvidenciales

STL - PLS

STLPLS

Lambert-St Louis

Mon 5/11

6:00 am-2:30 pm

1 stop7h 30m

Providenciales

Sat 5/16

3:50 pm-11:38 pm

1 stop8h 48m

$410

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 $219. 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 $368.

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 $660. 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 $445 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 $352 on momondo.

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

There is only 1 cabin class 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 44% 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

$357

Fastest flight time

4h 16m

Direct flights

Mon, Tue, Thu, Sat and Sun

Airports in Caribbean

195 airports
The best flight deal from St. Louis to Caribbean found on momondo in the last 72 hours is $357
The fastest flight from St. Louis to Caribbean takes 4h 16m
Direct flights go from St. Louis to Caribbean on Monday, Tuesday, Thursday, Saturday and Sunday. The only airline offering direct flights is Frontier.
There are 195 airports in Caribbean. 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?

    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
5.8
3,074 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $170Free CancellationRating
6.3
8,194 reviews
Search Spirit Airlines flights
DeltaPriceFrom $205Free CancellationRating
7.9
8,014 reviews
Search Delta flights
SouthwestPriceFrom $219Free CancellationRating
8.0
4,253 reviews
Search Southwest flights
United AirlinesPriceFrom $225Free CancellationRating
7.4
9,106 reviews
Search United Airlines flights
American AirlinesPriceFrom $263Free CancellationRating
7.2
11,050 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 $96
Flights to Punta Canafrom $142
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Flights to Montego Bayfrom $202
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Flights to Nassaufrom $216
Flights to Saint Thomas Islandfrom $171
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Flights to Simpson Bayfrom $167
Flights to Kingstonfrom $252
Flights to Willemstadfrom $232
Flights to Port of Spainfrom $241