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Caribbean Islands

$84+ Cheap flights from St. Louis (STL) to Caribbean Islands

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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
Mar 8 — Mar 151
Sat 3/8
Sat 3/15
1 adult, Economy
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Cheap flight deals from St. Louis to Caribbean Islands

Keep the following information in mind while searching for St. Louis to Caribbean Islands flight deals. Data was last updated March 3, 2025.

Round-trip from

$147
(FlightHub)

One-way from

$84
(CheapOair)

Popular in

December

Cheapest in

April

Average price

$477
From Lambert-St Louis to Caribbean Islands
Search Deals
One-way flight from Lambert-St Louis to Caribbean Islands
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
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Find flight deals from St. Louis to Caribbean Islands

Cheapest flights from St. Louis to Caribbean Islands
Explore the most affordable flight options available from St. Louis to Caribbean Islands. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 3, 2025.

This FlightHub deal was found by Cheapflights users on 3/3. 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.
Tue 4/16:47 pmSTL - STT
1 stop14h 19mSpirit Airlines
Tue 4/811:11 amSTT - STL
1 stop7h 41mSpirit Airlines
Deal found 3/3$147
This CheapOair deal was found by Cheapflights users on 3/3. 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.
Wed 4/24:57 pmSTL - SJU
1 stop27h 41mFrontier
Mon 4/73:00 amSJU - STL
1 stop21h 46mFrontier
Deal found 3/3$168
This American Airlines deal was found by Cheapflights users on 3/3. 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 5/39:41 amSTL - SJU
2 stops9h 47mAmerican Airlines
Tue 5/65:25 amSJU - STL
1 stop8h 02mAmerican Airlines
Deal found 3/3$209
This Delta deal was found by Cheapflights users on 3/3. 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 5/312:47 pmSTL - SJU
1 stop6h 36mDelta
Sat 5/175:38 pmSJU - STL
1 stop7h 00mDelta
Deal found 3/3$215
This CheapOair deal was found by Cheapflights users on 3/1. 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.
Sun 4/66:47 pmSTL - SJU
1 stop20h 47mSpirit Airlines
Wed 4/95:59 pmSJU - STL
1 stop24h 16mSpirit Airlines
Deal found 3/1$231
This United Airlines deal was found by Cheapflights users on 3/2. 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.
Mon 4/283:40 pmSTL - SJU
1 stop7h 14mUnited Airlines
Sat 5/31:05 amSJU - STL
2 stops10h 58mUnited Airlines
Deal found 3/2$237
This Priceline deal was found by Cheapflights users on 3/2. 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.
Mon 4/285:41 pmSTL - SJU
1 stop8h 08mMultiple Airlines
Sun 5/49:25 amSJU - STL
1 stop8h 50mMultiple Airlines
Deal found 3/2$243
This Cheapflightsfares deal was found by Cheapflights users on 3/2. 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.
Tue 5/66:10 pmSTL - MBJ
1 stop15h 04mSpirit Airlines
Thu 5/810:19 amMBJ - STL
1 stop8h 13mSpirit Airlines
Deal found 3/2$263
This Mytrip deal was found by Cheapflights users on 3/2. 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.
Tue 4/16:47 pmSTL - STT
2 stops17h 13mMultiple Airlines
Tue 4/811:11 amSTT - STL
3 stops30h 34mMultiple Airlines
Deal found 3/2$308
This Delta deal was found by Cheapflights users on 3/3. 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 stop6h 44mDelta
Thu 5/152:11 pmNAS - STL
1 stop4h 50mDelta
Deal found 3/3$327
This Kiwi.com deal was found by Cheapflights users on 3/2. 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 5/65:47 pmSTL - MBJ
2 stops15h 27mMultiple Airlines
Thu 5/810:19 amMBJ - STL
1 stop8h 13mMultiple Airlines
Deal found 3/2$363
This Delta deal was found by Cheapflights users on 3/2. 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.
Mon 5/57:10 amSTL - MBJ
1 stop8h 21mDelta
Thu 5/82:25 pmMBJ - STL
1 stop9h 13mDelta
Deal found 3/2$383

Find flights from St. Louis to Caribbean Islands within your budget

Customize your flight search to find flights from St. Louis to Caribbean Islands 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 March 3, 2025.

Fly from

St. Louis

Fly to

Caribbean Islands

Route

Depart

Return

Price

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Tue 4/1

6:47 pm-10:06 am

1 stop14h 19m

Saint Thomas Island Cyril E King

Tue 4/8

11:11 am-5:52 pm

1 stop7h 41m

$147

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 4/2

4:57 pm-9:38 pm

1 stop27h 41m

San Juan Luis Munoz Marin Intl

Mon 4/7

3:00 am-11:46 pm

1 stop21h 46m

$168

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 5/3

9:41 am-8:28 pm

2 stops9h 47m

San Juan Luis Munoz Marin Intl

Tue 5/6

5:25 am-12:27 pm

1 stop8h 02m

$209

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 5/3

12:47 pm-8:23 pm

1 stop6h 36m

San Juan Luis Munoz Marin Intl

Sat 5/17

5:38 pm-11:38 pm

1 stop7h 00m

$215

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sun 4/6

6:47 pm-4:34 pm

1 stop20h 47m

San Juan Luis Munoz Marin Intl

Wed 4/9

5:59 pm-5:15 pm

1 stop24h 16m

$231

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 4/28

3:40 pm-11:54 pm

1 stop7h 14m

San Juan Luis Munoz Marin Intl

Sat 5/3

1:05 am-11:03 am

2 stops10h 58m

$237

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 4/28

5:41 pm-2:49 am

1 stop8h 08m

San Juan Luis Munoz Marin Intl

Sun 5/4

9:25 am-5:15 pm

1 stop8h 50m

$243

St. LouisMontego Bay

STL - MBJ

STLMBJ

Lambert-St Louis

Tue 5/6

6:10 pm-9:14 am

1 stop15h 04m

Montego Bay Sangster Intl

Thu 5/8

10:19 am-6:32 pm

1 stop8h 13m

$263

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Tue 4/1

6:47 pm-1:00 pm

2 stops17h 13m

Saint Thomas Island Cyril E King

Tue 4/8

11:11 am-4:45 pm

3 stops30h 34m

$308

St. LouisNassau

STL - NAS

STLNAS

Lambert-St Louis

Tue 5/6

6:00 am-1:44 pm

1 stop6h 44m

Nassau Intl

Thu 5/15

2:11 pm-6:01 pm

1 stop4h 50m

$327

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 57 results
1
2
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Best time to book a flight from St. Louis to Caribbean Islands

Have a flexible travel schedule? Discover the best time to fly to Caribbean Islands 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.

Travel insights for flights from St. Louis to Caribbean Islands

Get recent, data-driven insights about flights from St. Louis to Caribbean Islands including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from St. Louis to Caribbean Islands (average of $254). Flying from St. Louis to Caribbean Islands in March is currently the most expensive (average of $353). 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 EPX?

Find hourly flight availability from St. Louis to Caribbean Islands. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Caribbean Islands as you normally would.

Rainfall in Caribbean Islands by month

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

In terms of precipitation, rainfall in Caribbean Islands 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 Islands when rainfall is around 2.2 in.

Temperature in Caribbean Islands by month

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

If weather is an important factor for your trip to Caribbean Islands, 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 Islands

Get insights into the airlines that provide service to Caribbean Islands. 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 Islands. Reviews last updated March 3, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from St. Louis to Caribbean Islands. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,333 reviews

Crew

8.7

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

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
8.1
Very good
4,333 reviews
Southwest
8.1
Very good
4,333 reviews

Crew

8.7

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

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.

Alaska Airlines
8.0
Very good
9,713 reviews
Southwest
8.1
Very good
4,333 reviews

Crew

8.7

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

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
8,070 reviews
Southwest
8.1
Very good
4,333 reviews

Crew

8.7

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

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
1,463 reviews
Southwest
8.1
Very good
4,333 reviews

Crew

8.7

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

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.

LATAM Airlines
7.5
Good
1,763 reviews
Southwest
8.1
Very good
4,333 reviews

Crew

8.7

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Boarding

8.2

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 Islands. 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 Islands?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to Caribbean Islands from St. Louis.

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

    $84 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Spirit Airlines, with prices starting from $105 and $108, respectively.

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

    The most popular route from St. Louis to Caribbean Islands is Lambert-St Louis - San Juan Luis Munoz Marin Intl. You may also consider Lambert-St Louis - Punta Cana or Lambert-St Louis - George Town Owen Roberts Intl.

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

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

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

    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 Islands.

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

    Yes. Cheapflights offers flight deals from St. Louis to Caribbean Islands 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 Islands?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Caribbean Islands (average of $254). Flying from St. Louis to Caribbean Islands in March is currently the most expensive (average of $353). 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 Islands

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 Islands

Discover the top 6 airlines that operate flights from St. Louis to Caribbean Islands. 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 March 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$140Average$422FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$172Average$310FlexibilityNo cancel feeOn-time65%
DeltaCheapest$254Average$595FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$264Average$575FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$271Average$618FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$394Average$762FlexibilityNo cancel feeOn-time63%
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