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

There are many flights that can get you from St. Louis to Caribbean Islands in 6h 33m. Fly via Frontier, Delta, or United Airlines to get the fastest option. The distance between St. Louis and Caribbean Islands is about 1209 mi. This flight may include one or multiple stops.

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 Southwest and United Airlines, with prices starting from $110 and $112, respectively.

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.

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).

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 - Saint Thomas Island Cyril E King.

What are the most popular airlines that fly from St. Louis to Caribbean Islands?

Before booking your flight from St. Louis to Caribbean Islands check out the most popular airlines for this route: American Airlines, Delta or Frontier.

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.

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.

$58+ Flights from St. Louis to Caribbean Islands

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

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Cheap 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 December 18, 2025.

Tue 12/3010:48 amSTL - SJU

1 stop12h 46mFrontier

Wed 1/77:18 pmSJU - STL

1 stop29h 15mFrontier

Deal found 12/16

$234

Sun 12/2110:57 amSTL - SJU

1 stop12h 40mFrontier

Wed 12/2410:33 amSJU - STL

1 stop14h 00mFrontier

Deal found 12/16

$284

Wed 12/244:27 pmSTL - SJU

1 stop26h 00mFrontier

Mon 12/299:37 pmSJU - STL

1 stop26h 56mFrontier

Deal found 12/17

$305

Tue 12/3010:48 amSTL - SJU

1 stop12h 46mFrontier

Wed 12/313:55 amSJU - STL

1 stop20h 38mFrontier

Deal found 12/16

$306

Fri 12/194:27 pmSTL - SJU

1 stop8h 23mFrontier

Thu 12/255:09 pmSJU - STL

1 stop7h 24mFrontier

Deal found 12/17

$314

Thu 12/1810:42 amSTL - SJU

1 stop11h 55mFrontier

Tue 12/309:37 pmSJU - STL

1 stop26h 56mFrontier

Deal found 12/16

$315

Wed 12/244:27 pmSTL - SJU

1 stop26h 00mFrontier

Tue 12/303:55 amSJU - STL

1 stop20h 38mFrontier

Deal found 12/16

$320

Tue 12/234:27 pmSTL - SJU

1 stop26h 00mFrontier

Tue 12/309:37 pmSJU - STL

1 stop26h 56mFrontier

Deal found 12/16

$325

Thu 12/1810:42 amSTL - SJU

1 stop11h 55mFrontier

Wed 12/249:37 pmSJU - STL

1 stop26h 56mFrontier

Deal found 12/17

$334

Thu 12/1810:42 amSTL - SJU

1 stop11h 55mFrontier

Sun 12/2110:33 pmSJU - STL

1 stop11h 39mFrontier

Deal found 12/16

$339

Wed 12/244:27 pmSTL - SJU

1 stop14h 56mFrontier

Sat 12/275:09 pmSJU - STL

1 stop7h 24mFrontier

Deal found 12/16

$340

Thu 12/2510:42 amSTL - SJU

1 stop11h 55mFrontier

Thu 1/16:00 amSJU - STL

1 stop18h 33mFrontier

Deal found 12/17

$345

Best flights from St. Louis to Caribbean Islands
Discover carefully curated flight deals from St. Louis to Caribbean Islands that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Thu 1/225:42 pmSTL - SJU

1 stop28h 17mFrontier

Thu 1/298:00 amSJU - STL

1 stop17h 33mFrontier

Deal found 12/17

$180

Tue 3/36:00 amSTL - SJU

1 stop9h 17mDelta

Wed 3/116:15 amSJU - STL

1 stop10h 38mDelta

Deal found 12/17

$225

Tue 1/2011:20 amSTL - SJU

1 stop7h 40mUnited Airlines

Sat 1/247:45 amSJU - STL

2 stops13h 42mUnited Airlines

Deal found 12/16

$225

Thu 1/229:33 amSTL - SJU

1 stop12h 23mAmerican Airlines

Thu 1/295:51 pmSJU - STL

1 stop8h 08mAmerican Airlines

Deal found 12/17

$225

Sat 1/248:22 pmSTL - SJU

1 stop16h 50mMultiple Airlines

Mon 2/211:52 amSJU - STL

2 stops44h 59mMultiple Airlines

Deal found 12/17

$230

Mon 1/2610:16 amSTL - SJU

1 stop6h 24mFrontier

Thu 1/294:36 pmSJU - STL

1 stop8h 57mFrontier

Deal found 12/15

$180

Tue 1/205:42 pmSTL - SJU

1 stop19h 44mFrontier

Mon 1/268:00 amSJU - STL

1 stop17h 33mFrontier

Deal found 12/17

$180

Tue 1/134:05 pmSTL - PUJ

2 stops19h 55mAir Canada

Mon 1/2610:35 pmPUJ - STL

1 stop18h 54mAir Canada

Deal found 12/17

$407

Wed 1/286:25 amSTL - PUJ

1 stop6h 05mSouthwest

Sat 1/313:35 pmPUJ - STL

1 stop8h 30mSouthwest

Deal found 12/17

$425

Mon 2/163:47 pmSTL - SJU

1 stop6h 11mDelta

Thu 2/196:15 amSJU - STL

1 stop6h 47mDelta

Deal found 12/16

$225

Sun 1/188:05 amSTL - SJU

2 stops11h 21mUnited Airlines

Thu 1/298:35 amSJU - STL

1 stop7h 55mUnited Airlines

Deal found 12/16

$225

Wed 2/113:49 pmSTL - SJU

1 stop6h 54mFrontier

Sat 2/215:25 pmSJU - STL

1 stop8h 34mFrontier

Deal found 12/17

$201

Wed 1/216:00 amSTL - SJU

1 stop9h 17mDelta

Wed 1/283:55 pmSJU - STL

1 stop6h 42mDelta

Deal found 12/16

$225

Sun 1/1810:06 amSTL - SJU

1 stop11h 23mFrontier

Thu 1/294:36 pmSJU - STL

1 stop8h 57mFrontier

Deal found 12/16

$215

Wed 2/183:49 pmSTL - STT

1 stop20h 42mMultiple Airlines

Wed 2/253:36 pmSTT - STL

1 stop8h 51mMultiple Airlines

Deal found 12/16

$319

Tue 3/176:00 amSTL - AUA

1 stop7h 50mAmerican Airlines

Tue 3/244:58 pmAUA - STL

2 stops17h 04mAmerican Airlines

Deal found 12/17

$372

Fri 1/308:22 pmSTL - STT

2 stops18h 15mMultiple Airlines

Fri 2/63:57 pmSTT - STL

1 stop9h 36mMultiple Airlines

Deal found 12/16

$355

Sat 3/74:05 pmSTL - PUJ

1 stop18h 40mAir Canada

Thu 3/122:35 pmPUJ - STL

2 stops25h 54mAir Canada

Deal found 12/16

$409

Thu 12/256:00 amSTL - NAS

1 stop6h 33mUnited Airlines

Tue 12/303:35 pmNAS - STL

1 stop7h 08mUnited Airlines

Deal found 12/17

$379

Fri 3/66:07 pmSTL - NAS

1 stop14h 41mAmerican Airlines

Tue 3/1712:02 pmNAS - STL

1 stop10h 49mAmerican Airlines

Deal found 12/15

$383

Wed 1/288:22 pmSTL - STT

2 stops18h 15mMultiple Airlines

Sat 1/313:57 pmSTT - STL

1 stop9h 36mMultiple Airlines

Deal found 12/16

$357

Sun 3/16:10 amSTL - PLS

1 stop8h 00mDelta

Thu 3/53:50 pmPLS - STL

1 stop8h 46mDelta

Deal found 12/17

$364

Fri 1/234:05 pmSTL - PUJ

2 stops30h 40mAir Canada

Fri 1/307:40 pmPUJ - STL

2 stops21h 49mAir Canada

Deal found 12/15

$415

Mon 2/25:59 pmSTL - NAS

1 stop16h 20mAmerican Airlines

Sat 2/71:12 pmNAS - STL

1 stop6h 22mAmerican Airlines

Deal found 12/17

$383

Wed 1/288:05 amSTL - NAS

1 stop6h 17mUnited Airlines

Sat 1/315:20 pmNAS - STL

1 stop7h 39mUnited Airlines

Deal found 12/16

$383

Sat 2/2110:26 amSTL - STT

1 stop26h 05mMultiple Airlines

Fri 2/273:36 pmSTT - STL

1 stop10h 51mMultiple Airlines

Deal found 12/16

$359

Tue 1/66:00 amSTL - AUA

1 stop7h 20mDelta

Thu 1/152:10 pmAUA - STL

1 stop11h 29mDelta

Deal found 12/16

$368

Sat 2/214:05 pmSTL - PUJ

1 stop18h 00mAir Canada

Tue 2/2410:35 pmPUJ - STL

1 stop18h 54mAir Canada

Deal found 12/17

$421

Sat 4/187:03 pmSTL - PLS

1 stop13h 57mAmerican Airlines

Sat 4/253:30 pmPLS - STL

1 stop18h 25mAmerican Airlines

Deal found 12/16

$387

Mon 2/166:25 amSTL - NAS

1 stop7h 57mUnited Airlines

Sat 2/212:35 pmNAS - STL

2 stops21h 01mUnited Airlines

Deal found 12/17

$387

Last-minute flights from St. Louis to Caribbean Islands
Discover last-minute flight deals from St. Louis to Caribbean Islands. Data last updated December 18, 2025 and is based on user searches.

Wed 1/75:11 pmSTL - SJU

1 stop7h 39mFrontier

Wed 2/44:36 pmSJU - STL

1 stop8h 57mFrontier

Deal found 12/17

$201

Wed 1/77:43 pmSTL - SJU

2 stops13h 33mFrontier

Wed 1/147:34 pmSJU - STL

1 stop29h 00mFrontier

Deal found 12/15

$221

Thu 1/83:43 pmSTL - SJU

1 stop6h 22mFrontier

Mon 1/129:23 pmSJU - STL

1 stop27h 11mFrontier

Deal found 12/16

$180

Fri 1/93:43 pmSTL - SJU

1 stop7h 38mFrontier

Thu 2/54:36 pmSJU - STL

1 stop8h 57mFrontier

Deal found 12/17

$215

Sat 1/105:11 pmSTL - SJU

1 stop18h 38mFrontier

Fri 1/163:58 amSJU - STL

1 stop20h 36mFrontier

Deal found 12/16

$200

Sun 1/113:43 pmSTL - SJU

1 stop6h 48mFrontier

Wed 1/147:34 pmSJU - STL

1 stop29h 00mFrontier

Deal found 12/15

$183

Fri 1/2311:18 amSTL - SJU

1 stop10h 41mFrontier

Wed 1/288:00 amSJU - STL

1 stop17h 33mFrontier

Deal found 12/17

$211

Sat 1/245:42 pmSTL - SJU

1 stop14h 12mFrontier

Sat 1/318:00 amSJU - STL

1 stop17h 33mFrontier

Deal found 12/16

$177

Sat 1/245:42 pmSTL - SJU

1 stop14h 12mFrontier

Mon 2/28:00 amSJU - STL

1 stop17h 33mFrontier

Deal found 12/17

$197

Thu 1/295:42 pmSTL - SJU

1 stop19h 44mFrontier

Mon 2/28:00 amSJU - STL

1 stop17h 33mFrontier

Deal found 12/16

$181

Sat 1/315:42 pmSTL - SJU

1 stop14h 12mFrontier

Wed 2/115:25 pmSJU - STL

1 stop7h 02mFrontier

Deal found 12/16

$172

Sat 1/315:42 pmSTL - SJU

1 stop14h 12mFrontier

Sat 2/78:00 amSJU - STL

1 stop26h 04mFrontier

Deal found 12/17

$176

One-way flights from St. Louis to Caribbean Islands
Search for one-way flight options from St. Louis to Caribbean Islands. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Tue 2/103:49 pmSTL - SJU

1 stop9h 04mFrontier

Deal found 12/16

$58

Sat 2/75:42 pmSTL - SJU

1 stop20h 39mFrontier

Deal found 12/16

$64

Sat 1/315:42 pmSTL - SJU

1 stop14h 12mFrontier

Deal found 12/17

$86

Thu 1/85:11 pmSTL - SJU

1 stop7h 39mFrontier

Deal found 12/16

$90

Tue 1/275:42 pmSTL - SJU

1 stop28h 17mFrontier

Deal found 12/16

$92

Tue 1/205:42 pmSTL - SJU

1 stop19h 44mFrontier

Deal found 12/17

$93

Tue 1/135:11 pmSTL - SJU

1 stop21h 16mFrontier

Deal found 12/17

$96

Mon 1/198:32 pmSTL - SJU

2 stops17h 03mMultiple Airlines

Deal found 12/17

$98

Wed 1/711:17 amSTL - PUJ

Nonstop4h 16mFrontier

Deal found 12/16

$99

Wed 1/77:43 pmSTL - SJU

2 stops23h 54mFrontier

Deal found 12/16

$100

Sat 1/178:32 pmSTL - SJU

1 stop16h 55mFrontier

Deal found 12/17

$103

Mon 1/198:06 amSTL - PUJ

Nonstop4h 17mFrontier

Deal found 12/16

$107

Find flight deals from St. Louis to Caribbean Islands

Round-trip from	$172 (Priceline)
One-way from	$58 (Priceline)
Popular in	December
Cheapest in	September
Average price	$640

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. 15% potential increase in price ($82 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Caribbean Islands that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Thu 1/22

5:42 pm-11:59 pm

1 stop28h 17m

San Juan Luis Munoz Marin Intl

Thu 1/29

8:00 am-11:33 pm

1 stop17h 33m

$180

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 1/26

10:16 am-6:40 pm

1 stop6h 24m

San Juan Luis Munoz Marin Intl

Thu 1/29

4:36 pm-11:33 pm

1 stop8h 57m

$180

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 1/20

5:42 pm-3:26 pm

1 stop19h 44m

San Juan Luis Munoz Marin Intl

Mon 1/26

8:00 am-11:33 pm

1 stop17h 33m

$180

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 2/11

3:49 pm-12:43 am

1 stop6h 54m

San Juan Luis Munoz Marin Intl

Sat 2/21

5:25 pm-11:59 pm

1 stop8h 34m

$201

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sun 1/18

10:06 am-11:29 pm

1 stop11h 23m

San Juan Luis Munoz Marin Intl

Thu 1/29

4:36 pm-11:33 pm

1 stop8h 57m

$215

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 3/3

6:00 am-5:17 pm

1 stop9h 17m

San Juan Luis Munoz Marin Intl

Wed 3/11

6:15 am-3:53 pm

1 stop10h 38m

$225

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 1/20

11:20 am-9:00 pm

1 stop7h 40m

San Juan Luis Munoz Marin Intl

Sat 1/24

7:45 am-7:27 pm

2 stops13h 42m

$225

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Thu 1/22

9:33 am-11:56 pm

1 stop12h 23m

San Juan Luis Munoz Marin Intl

Thu 1/29

5:51 pm-11:59 pm

1 stop8h 08m

$225

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 2/16

3:47 pm-11:58 pm

1 stop6h 11m

San Juan Luis Munoz Marin Intl

Thu 2/19

6:15 am-11:02 am

1 stop6h 47m

$225

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sun 1/18

8:05 am-9:26 pm

2 stops11h 21m

San Juan Luis Munoz Marin Intl

Thu 1/29

8:35 am-2:30 pm

1 stop7h 55m

$225

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 60 results

...

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.

Cheapflights Insights

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

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

Currently, May is the cheapest month in which you can book a flight from St. Louis to Caribbean Islands (average of $140). Flying from St. Louis to Caribbean Islands in June is currently the most expensive (average of $249). 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?

A simple way to save on the total cost of your ticket is to fly from St. Louis to Caribbean Islands in the evening. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from St. Louis to Caribbean Islands?

Travelers seeking maximum savings on their St. Louis to Caribbean Islands flight should consider departing on Tuesday evenings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Caribbean Islands

Read reviews from past customers who have flown Southwest, Delta, and United Airlines from St. Louis to Caribbean Islands. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Southwest

7.9

Good

4,250 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Delta

7.9

Good

8,005 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

United Airlines

7.4

Good

9,091 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

American Airlines

7.2

Good

11,054 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Frontier

5.8

Fair

3,081 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

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.
How long is the flight from St. Louis to Caribbean Islands?
There are many flights that can get you from St. Louis to Caribbean Islands in 6h 33m. Fly via Frontier, Delta, or United Airlines to get the fastest option. The distance between St. Louis and Caribbean Islands is about 1209 mi. This flight may include one or multiple stops.
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 Southwest and United Airlines, with prices starting from $110 and $112, 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 - Saint Thomas Island Cyril E King.
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, May is the cheapest month in which you can book a flight from St. Louis to Caribbean Islands (average of $140). Flying from St. Louis to Caribbean Islands in June is currently the most expensive (average of $249). 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

Top 6 airlines flying from St. Louis to Caribbean Islands

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$140	Average$408	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$170	Average$334	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$205	Average$602	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$219	Average$759	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$225	Average$523	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$262	Average$615	FlexibilityNo cancel fee	On-time71%

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$58+ 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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Caribbean Islands with Cheapflights

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Cheap flight deals from St. Louis to Caribbean Islands

Cheapest flights from St. Louis to Caribbean IslandsExplore 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 December 18, 2025.

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 December 18, 2025.

Find 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 December 18, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Caribbean Islands that are best for you.

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.

Cheapflights Insights

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

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

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 December 18, 2025.

What is the cheapest day to fly from St. Louis to Caribbean Islands?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Caribbean Islands. Price data was last updated on December 16, 2024.

Reviews of airlines servicing Caribbean Islands

Read reviews from past customers who have flown Southwest, Delta, and United Airlines from St. Louis to Caribbean Islands. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

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

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

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

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

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Alternative routes for St. Louis to Caribbean Islands

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Top 6 airlines flying from St. Louis to Caribbean Islands

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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 December 18, 2025.