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$103+ 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
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 July 29, 2025.

Round-trip from

$205
(Delta)

One-way from

$103
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$545

Good round-trip deal

$477 or less

Good one-way deal

$217 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. 6% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Caribbean.
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Price to beat on a one-way 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 July 29, 2025.

This Delta deal was found by Cheapflights users on 7/27. 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.
Sat 9/201:26 pmSTL - SJU
1 stop7h 34mDelta
Fri 9/265:41 pmSJU - STL
1 stop6h 43mDelta
Deal found 7/27$205
This CheapOair deal was found by Cheapflights users on 7/29. 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.
Sat 10/187:00 pmSTL - STT
1 stop13h 44mSpirit Airlines
Sat 10/2510:49 amSTT - STL
1 stop8h 06mSpirit Airlines
Deal found 7/29$233
This Priceline deal was found by Cheapflights users on 7/29. 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.
Wed 8/135:40 pmSTL - SJU
1 stop14h 24mFrontier
Sat 8/169:30 pmSJU - STL
1 stop27h 17mFrontier
Deal found 7/29$239
This CheapOair deal was found by Cheapflights users on 7/29. 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.
Fri 9/191:57 pmSTL - SJU
1 stop11h 37mMultiple Airlines
Wed 9/241:59 amSJU - STL
2 stops9h 51mMultiple Airlines
Deal found 7/29$247
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/242:30 pmSTL - SJU
2 stops9h 26mSpirit Airlines
Thu 8/282:11 amSJU - STL
2 stops12h 21mSpirit Airlines
Deal found 7/29$249
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/192:00 pmSTL - SJU
1 stop8h 50mSouthwest
Sun 9/2110:30 pmSJU - STL
1 stop11h 00mSouthwest
Deal found 7/27$260
This American Airlines deal was found by Cheapflights users on 7/29. 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.
Sat 8/236:00 amSTL - SJU
1 stop15h 49mAmerican Airlines
Sat 8/306:00 amSJU - STL
2 stops11h 14mAmerican Airlines
Deal found 7/29$300
This FlightHub deal was found by Cheapflights users on 7/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/210:35 amSTL - PUJ
1 stop26h 39mSpirit Airlines
Wed 10/83:19 pmPUJ - STL
1 stop19h 21mSpirit Airlines
Deal found 7/27$342
This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/210:35 amSTL - MBJ
1 stop24h 30mSpirit Airlines
Wed 11/51:12 pmMBJ - STL
1 stop22h 49mSpirit Airlines
Deal found 7/28$354
This Delta deal was found by Cheapflights users on 7/28. 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.
Wed 10/17:10 amSTL - NAS
1 stop5h 39mDelta
Mon 10/63:15 pmNAS - STL
1 stop7h 15mDelta
Deal found 7/28$385
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Tue 8/125:26 pmSTL - SXM
1 stop19h 34mSpirit Airlines
Wed 8/203:05 pmSXM - STL
1 stop19h 35mSpirit Airlines
Deal found 7/27$388
This American Airlines deal was found by Cheapflights users on 7/28. 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.
Wed 8/135:26 amSTL - NAS
1 stop11h 09mAmerican Airlines
Sun 8/176:45 pmNAS - STL
1 stop6h 14mAmerican Airlines
Deal found 7/28$390

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 July 29, 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

Sat 9/20

1:26 pm-10:00 pm

1 stop7h 34m

San Juan Luis Munoz Marin Intl

Fri 9/26

5:41 pm-11:24 pm

1 stop6h 43m

$205

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

$227

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

Fri 9/19

1:57 pm-2:34 am

1 stop11h 37m

San Juan Luis Munoz Marin Intl

Wed 9/24

1:59 am-10:50 am

2 stops9h 51m

$247

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

Fri 9/19

2:00 pm-11:50 pm

1 stop8h 50m

San Juan Luis Munoz Marin Intl

Sun 9/21

10:30 pm-8:30 am

1 stop11h 00m

$260

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 8/23

6:00 am-10:49 pm

1 stop15h 49m

San Juan Luis Munoz Marin Intl

Sat 8/30

6:00 am-4:14 pm

2 stops11h 14m

$300

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sun 9/21

6:15 am-3:42 pm

1 stop8h 27m

San Juan Luis Munoz Marin Intl

Fri 9/26

1:05 am-10:49 am

2 stops10h 44m

$335

St. LouisPunta Cana

STL - PUJ

STLPUJ

Lambert-St Louis

Thu 10/2

10:35 am-2:14 pm

1 stop26h 39m

Punta Cana

Wed 10/8

3:19 pm-9:40 am

1 stop19h 21m

$342

St. LouisMontego Bay

STL - MBJ

STLMBJ

Lambert-St Louis

Sun 11/2

10:35 am-12:05 pm

1 stop24h 30m

Montego Bay Sangster Intl

Wed 11/5

1:12 pm-11:01 am

1 stop22h 49m

$354

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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 July 29, 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 July 29, 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
4,238 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,977 reviews
Southwest
8.0
Very good
4,238 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,899 reviews
Southwest
8.0
Very good
4,238 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,238 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Air Canada
7.1
Good
9,822 reviews
Southwest
8.0
Very good
4,238 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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.

  • 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 $103 on United Airlines. Other airlines that offer cheap prices include Spirit Airlines from $116 and Frontier from $119 one-way.

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

    While some choose either Lambert-St Louis - Punta Cana or Lambert-St Louis - Saint Thomas Island Cyril E King, 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$140Average$390FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$155Average$319FlexibilityNo cancel feeOn-time65%
DeltaCheapest$218Average$598FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$219Average$538FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$219Average$734FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$255Average$630FlexibilityNo cancel feeOn-time71%

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