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$113+ Cheap flights from St. Louis (STL) to Caribbean

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from St. Louis to Caribbean

Keep the following information in mind while searching for St. Louis to Caribbean flight deals. Data was last updated septiembre 11, 2025.

Round-trip from

$225
(American Airlines)

One-way from

$113
(Delta)

Popular in

December

Cheapest in

September

Average price

$342

Good round-trip deal

$686 or less
From Lambert-St Louis to Caribbean
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One-way flight from Lambert-St Louis to Caribbean
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Highest demand for flights based on searches. 8% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Caribbean.
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Find flight deals from St. Louis to Caribbean

Cheapest flights from St. Louis to Caribbean
Explore the most affordable flight options available from St. Louis to Caribbean. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/189:14 amSTL - SJU
1 stop13h 40mAmerican Airlines
mié. 10/223:00 pmSJU - STL
1 stop9h 54mAmerican Airlines
Deal found 9/10$225
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/187:15 pmSTL - STT
1 stop13h 41mSpirit Airlines
sáb. 10/2511:01 amSTT - STL
1 stop8h 09mSpirit Airlines
Deal found 9/10$251
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/1510:00 amSTL - SJU
2 stops10h 22mUnited Airlines
mar. 11/187:45 amSJU - STL
1 stop10h 05mUnited Airlines
Deal found 9/9$258
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/811:05 amSTL - SJU
1 stop7h 55mUnited Airlines
vie. 11/142:05 amSJU - STL
2 stops14h 20mUnited Airlines
Deal found 9/10$260
This Priceline deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/115:11 pmSTL - SJU
1 stop14h 44mFrontier
dom. 12/143:55 amSJU - STL
1 stop20h 51mFrontier
Deal found 9/9$268
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/16:00 amSTL - SJU
1 stop7h 11mDelta
sáb. 11/84:30 pmSJU - STL
1 stop8h 37mDelta
Deal found 9/10$269
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/92:12 pmSTL - SJU
1 stop10h 42mFrontier
dom. 11/1610:39 pmSJU - STL
1 stop13h 01mFrontier
Deal found 9/9$272
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/273:37 pmSTL - SJU
1 stop9h 17mFrontier
jue. 12/43:55 amSJU - STL
1 stop6h 50mFrontier
Deal found 9/10$278
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/191:57 pmSTL - SJU
1 stop9h 02mFrontier
dom. 9/213:39 amSJU - STL
1 stop10h 23mFrontier
Deal found 9/9$282
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/151:57 pmSTL - SJU
1 stop11h 37mFrontier
sáb. 9/203:39 amSJU - STL
1 stop10h 28mFrontier
Deal found 9/9$286
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/207:23 amSTL - SJU
1 stop15h 31mAmerican Airlines
dom. 10/265:30 amSJU - STL
1 stop15h 50mAmerican Airlines
Deal found 9/11$293
This Delta deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/86:00 amSTL - SJU
1 stop7h 11mDelta
mié. 11/123:20 pmSJU - STL
1 stop7h 26mDelta
Deal found 9/11$294

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated septiembre 11, 2025.
Use the filters below to find and compare flights from St. Louis to Caribbean that are best for you.

Fly from

St. Louis

Fly to

Caribbean

Route

Depart

Return

Price

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

mié. 10/1

9:20 am-11:57 pm

2 stops13h 37m

San Juan Luis Munoz Marin Intl

sáb. 10/4

3:56 pm-10:35 pm

1 stop7h 39m

$225

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

mar. 3/3

6:00 am-2:15 pm

1 stop6h 15m

San Juan Luis Munoz Marin Intl

mié. 3/4

6:17 pm-11:40 pm

1 stop7h 23m

$260

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

lun. 1/12

6:00 am-4:36 pm

1 stop8h 36m

San Juan Luis Munoz Marin Intl

vie. 1/16

2:05 am-12:29 pm

2 stops12h 24m

$291

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

sáb. 1/31

4:49 pm-6:11 am

2 stops11h 22m

San Juan Luis Munoz Marin Intl

mié. 2/4

8:35 am-2:30 pm

1 stop7h 55m

$293

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

sáb. 10/4

1:26 pm-10:00 pm

1 stop7h 34m

San Juan Luis Munoz Marin Intl

mar. 10/7

7:15 am-3:55 pm

1 stop9h 40m

$304

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

mié. 10/29

6:15 am-3:36 pm

1 stop8h 21m

San Juan Luis Munoz Marin Intl

sáb. 11/1

2:05 am-11:41 am

1 stop10h 36m

$312

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

mié. 10/29

8:55 am-10:45 pm

2 stops12h 50m

San Juan Luis Munoz Marin Intl

dom. 11/2

5:40 am-10:20 am

1 stop6h 40m

$320

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

mié. 10/1

9:19 am-4:31 pm

1 stop6h 12m

San Juan Luis Munoz Marin Intl

vie. 10/10

5:43 pm-11:41 pm

1 stop6h 58m

$339

St. LouisPunta Cana

STL - PUJ

STLPUJ

Lambert-St Louis

sáb. 10/18

7:15 pm-11:42 am

2 stops15h 27m

Punta Cana

vie. 10/24

3:57 pm-6:10 pm

1 stop27h 13m

$353

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

jue. 11/27

6:00 am-5:52 pm

2 stops9h 52m

San Juan Luis Munoz Marin Intl

vie. 12/5

3:47 pm-11:59 pm

1 stop10h 12m

$355

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 60 results
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Best time to book a flight from St. Louis to Caribbean

Have a flexible travel schedule? Discover the best time to fly to Caribbean from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Caribbean

What is the cheapest month to book a flight from St. Louis to Caribbean?

Currently, September is the cheapest month in which you can book a flight from St. Louis to Caribbean (average of $254). Flying from St. Louis to Caribbean in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to CB?

Find hourly flight availability from St. Louis to Caribbean. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

When flying from St. Louis to Caribbean, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Caribbean

Get insights into the airlines that provide service to Caribbean. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Caribbean. Reviews last updated septiembre 11, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from St. Louis to Caribbean to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Caribbean. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Caribbean?

    If you book a flight to Caribbean from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

  • How long is the flight from St. Louis to Caribbean?

    Airlines like United Airlines, Delta, and Spirit Airlines fly from St. Louis to Caribbean in about 6h 15m. The time it takes to get you to your destination can typically vary by up to 9h 12m. St. Louis and Caribbean are separated by a distance of 2024 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from St. Louis to Caribbean one-way?

    One-way options have recently been found by users for as low as $113 on Delta. Other airlines that offer cheap prices include United Airlines from $113 and Spirit Airlines from $127 one-way.

  • What are the most popular routes from St. Louis to Caribbean?

    While some choose either Lambert-St Louis - Saint Thomas Island Cyril E King or Lambert-St Louis - Punta Cana, Lambert-St Louis - San Juan Luis Munoz Marin Intl is the most popular route from St. Louis to Caribbean.

  • Can I find deals for flights from St. Louis to Caribbean that include hotel bookings?

    Yes. In addition to deals on St. Louis to Caribbean flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Caribbean?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Caribbean.

  • Can I find deals for business class flights from St. Louis to Caribbean?

    Yes. Cheapflights offers flight deals from St. Louis to Caribbean by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Caribbean?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Caribbean (average of $254). Flying from St. Louis to Caribbean in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for St. Louis to Caribbean

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from St. Louis to Caribbean

Discover the top 6 airlines that operate flights from St. Louis to Caribbean. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$140Average$392FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$170Average$329FlexibilityNo cancel feeOn-time65%
DeltaCheapest$209Average$606FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$219Average$543FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$219Average$735FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$255Average$633FlexibilityNo cancel feeOn-time71%

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