HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Caribbean

$105+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Caribbean with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 17, 2025.

Round-trip from

$289
(CheapOair)

One-way from

$105
(American Airlines)

Popular in

July

Cheapest in

April

Average price

$324

Good round-trip deal

$444 or less

Good one-way deal

$210 or less
From Lambert-St Louis to Caribbean
Search Deals
One-way flight from Lambert-St Louis to Caribbean
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Caribbean.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to Caribbean.
Search Deals

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 April 17, 2025.

This United Airlines deal was found by Cheapflights users on 4/16. 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.
Wed 5/76:30 amSTL - SJU
2 stops13h 08mUnited Airlines
Sat 5/107:00 amSJU - STL
1 stop9h 49mUnited Airlines
Deal found 4/16$209
This Delta deal was found by Cheapflights users on 4/17. 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.
Thu 7/179:00 amSTL - SJU
1 stop9h 44mDelta
Wed 7/232:15 pmSJU - STL
1 stop7h 15mDelta
Deal found 4/17$245
This American Airlines deal was found by Cheapflights users on 4/16. 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 5/77:10 amSTL - SJU
1 stop12h 23mAmerican Airlines
Thu 5/85:25 amSJU - STL
1 stop16h 33mAmerican Airlines
Deal found 4/16$285
This CheapOair deal was found by Cheapflights users on 4/17. 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 5/25:55 pmSTL - SJU
1 stop7h 56mMultiple Airlines
Tue 5/69:25 amSJU - STL
1 stop8h 50mMultiple Airlines
Deal found 4/17$289
This Mytrip deal was found by Cheapflights users on 4/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1810:10 amSTL - SJU
1 stop7h 57mSpirit Airlines
Sat 5/248:12 pmSJU - STL
1 stop14h 03mSpirit Airlines
Deal found 4/17$297
This Frontier deal was found by Cheapflights users on 4/16. 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.
Thu 5/85:45 pmSTL - SJU
1 stop8h 06mFrontier
Sun 5/114:39 pmSJU - STL
1 stop8h 27mFrontier
Deal found 4/16$298
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/510:10 amSTL - STT
1 stop22h 47mSpirit Airlines
Sat 6/143:03 pmSTT - STL
2 stops27h 01mSpirit Airlines
Deal found 4/16$332
This Mytrip deal was found by Cheapflights users on 4/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1710:10 amSTL - MBJ
1 stop24h 52mSpirit Airlines
Sat 5/2412:07 pmMBJ - STL
1 stop21h 08mSpirit Airlines
Deal found 4/16$339
This Delta deal was found by Cheapflights users on 4/16. 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.
Tue 5/66:00 amSTL - NAS
1 stop4h 47mDelta
Thu 5/153:20 pmNAS - STL
1 stop9h 18mDelta
Deal found 4/16$347
This Southwest deal was found by Cheapflights users on 4/16. 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.
Sun 5/116:15 amSTL - PLS
1 stop7h 40mSouthwest
Thu 5/154:05 pmPLS - STL
1 stop6h 50mSouthwest
Deal found 4/16$360
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
Sat 4/265:41 pmSTL - PUJ
1 stop17h 03mMultiple Airlines
Wed 4/303:18 pmPUJ - STL
1 stop26h 57mMultiple Airlines
Deal found 4/17$363
This Southwest deal was found by Cheapflights users on 4/16. 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.
Sat 5/31:25 pmSTL - SJU
Nonstop4h 25mSouthwest
Sat 5/173:20 pmSJU - STL
1 stop7h 40mSouthwest
Deal found 4/16$363

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 April 17, 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

Wed 5/7

6:00 am-3:40 pm

1 stop8h 40m

San Juan Luis Munoz Marin Intl

Fri 5/9

1:05 am-2:50 pm

2 stops14h 45m

$209

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Thu 7/17

9:00 am-7:44 pm

1 stop9h 44m

San Juan Luis Munoz Marin Intl

Wed 7/23

2:15 pm-8:30 pm

1 stop7h 15m

$245

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 5/7

7:10 am-8:33 pm

1 stop12h 23m

San Juan Luis Munoz Marin Intl

Thu 5/8

5:25 am-8:58 pm

1 stop16h 33m

$285

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 5/2

5:55 pm-2:51 am

1 stop7h 56m

San Juan Luis Munoz Marin Intl

Tue 5/6

9:25 am-5:15 pm

1 stop8h 50m

$289

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sun 5/18

10:10 am-7:07 pm

1 stop7h 57m

San Juan Luis Munoz Marin Intl

Sat 5/24

8:12 pm-9:15 am

1 stop14h 03m

$297

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Thu 5/8

5:45 pm-2:51 am

1 stop8h 06m

San Juan Luis Munoz Marin Intl

Sun 5/11

4:39 pm-12:06 am

1 stop8h 27m

$298

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Thu 6/5

10:10 am-9:57 am

1 stop22h 47m

Saint Thomas Island Cyril E King

Sat 6/14

3:03 pm-5:04 pm

2 stops27h 01m

$332

St. LouisMontego Bay

STL - MBJ

STLMBJ

Lambert-St Louis

Sat 5/17

10:10 am-11:02 am

1 stop24h 52m

Montego Bay Sangster Intl

Sat 5/24

12:07 pm-9:15 am

1 stop21h 08m

$339

St. LouisNassau

STL - NAS

STLNAS

Lambert-St Louis

Tue 5/6

6:00 am-11:47 am

1 stop4h 47m

Nassau Intl

Thu 5/15

3:20 pm-11:38 pm

1 stop9h 18m

$347

St. LouisProvidenciales

STL - PLS

STLPLS

Lambert-St Louis

Sun 5/11

6:15 am-2:55 pm

1 stop7h 40m

Providenciales

Thu 5/15

4:05 pm-9:55 pm

1 stop6h 50m

$360

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 60 results
1
2
3
...
6

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 December is currently the most expensive (average of $336). 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 April 17, 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.

Rainfall in Caribbean by month

Plan your trip to Caribbean by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Caribbean ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit Caribbean when rainfall is around 2.2 in.

Temperature in Caribbean by month

Plan your trip to Caribbean by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Caribbean, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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 April 17, 2025.
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Crew

8.6

Food

7.1

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,280 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Crew

8.6

Food

7.1

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,917 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Crew

8.6

Food

7.1

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Copa Airlines
7.6
Good
1,409 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Crew

8.6

Food

7.1

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,667 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Crew

8.6

Food

7.1

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,280 reviews

Boarding

8.2

Crew

8.6

Food

7.1

Entertainment

7.6

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 $105 on American Airlines. Other airlines that offer cheap prices include Spirit Airlines from $120 and United Airlines from $120 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 - Montego Bay Sangster Intl, Lambert-St Louis - San Juan Luis Munoz Marin Intl is the most popular route from St. Louis to Caribbean.

  • What are the cheapest flights from St. Louis to Caribbean?

    Looking for the cheapest flight from St. Louis to Caribbean? While on average our users pay $676, our data indicates the cheapest price to be $590. The most popular route (Lambert-St Louis - San Juan Luis Munoz Marin Intl), is priced around $209.

  • 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 December is currently the most expensive (average of $336). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Caribbean

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Seattle flights
Kansas City to Seattle flights
St. Louis to Las Vegas flights
St. Louis to Denver flights
Kansas City to Las Vegas flights
St. Louis to Miami flights
Kansas City to O'Hare Intl flights
St. Louis to LaGuardia flights
St. Louis to Dallas/Fort Worth flights
St. Louis to Newark flights
St. Louis to Orlando flights
Kansas City to John F Kennedy Intl flights
Kansas City to Newark flights
Kansas City to Denver flights
Kansas City to LaGuardia flights
St. Louis to John F Kennedy Intl flights
Kansas City to Boston flights
Kansas City to San Francisco flights
Kansas City to Portland flights
St. Louis to Dulles Intl flights
Kansas City to Orlando flights
Kansas City to Miami flights
Kansas City to Sky Harbor Intl flights
St. Louis to Hobby flights
Kansas City to Los Angeles flights
Kansas City to Cancún flights
St. Louis to Sky Harbor Intl flights
Kansas City to Dallas/Fort Worth flights
St. Louis to Boston flights
Kansas City to Atlanta flights
St. Louis to George Bush Intcntl flights
Kansas City to Tampa flights
Kansas City to Hobby flights
Kansas City to Dulles Intl flights
St. Louis to Cancún flights
St. Louis to Los Angeles flights
St. Louis to Philadelphia flights
St. Louis to O'Hare Intl flights
Kansas City to San Diego flights
St. Louis to San Diego flights
Kansas City to George Bush Intcntl flights
St. Louis to Baltimore flights
St. Louis to San Francisco flights
St. Louis to Heathrow flights
Kansas City to Salt Lake City flights
St. Louis to Portland flights
Kansas City to Minneapolis flights
St. Louis to Honolulu flights
St. Louis to Reagan-National flights
Kansas City to Fort Lauderdale flights

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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$140Average$421FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$166Average$312FlexibilityNo cancel feeOn-time65%
DeltaCheapest$254Average$596FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$261Average$551FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$265Average$626FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$374Average$776FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.