$55+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
Mar 7 — Mar 141
1 adult, Economy
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Find cheap flights from St. Louis to Caribbean Islands 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 Islands
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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 February 5, 2026.
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 February 5, 2026.
This Priceline deal was found by Cheapflights users on 2/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Wed 3/45:25 pm
SJU
- STL
1 stop7h 02m
Frontier
Deal found 2/3![Frontier logo]()
$188
This Super.com deal was found by Cheapflights users on 2/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/104:51 pm
STL
- SJU
1 stop8h 12m
Frontier
Tue 3/176:30 am
SJU
- STL
1 stop17h 49m
Frontier
Deal found 2/3![Frontier logo]()
$199
This Frontier deal was found by Cheapflights users on 2/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:54 pm
STL
- SJU
1 stop8h 07m
Frontier
Wed 4/1511:07 am
SJU
- STL
1 stop13h 12m
Frontier
Deal found 2/3![Frontier logo]()
$202
This CheapOair deal was found by Cheapflights users on 2/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Mon 3/96:30 am
SJU
- STL
1 stop17h 49m
Frontier
Deal found 2/2![Frontier logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:22 pm
STL
- STT
2 stops18h 12m
Multiple Airlines
Wed 3/43:36 pm
STT
- STL
1 stop8h 51m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$209
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/910:16 am
STL
- SJU
1 stop6h 24m
Frontier
Wed 2/255:25 pm
SJU
- STL
1 stop7h 02m
Frontier
Deal found 2/2![Frontier logo]()
$209
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/53:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Tue 3/1011:07 am
SJU
- STL
1 stop13h 12m
Frontier
Deal found 2/2![Frontier logo]()
$211
This CheapOair deal was found by Cheapflights users on 2/3. 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.
Tue 5/54:55 pm
STL
- SJU
1 stop15h 59m
Frontier
Thu 5/76:30 am
SJU
- STL
1 stop17h 49m
Frontier
Deal found 2/3![Frontier logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/243:49 pm
STL
- STT
1 stop20h 42m
Multiple Airlines
Tue 3/35:40 pm
STT
- STL
2 stops15h 11m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Sat 2/283:49 pm
STL
- STT
1 stop20h 42m
Multiple Airlines
Tue 3/35:40 pm
STT
- STL
2 stops15h 11m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$215
This Super.com deal was found by Cheapflights users on 2/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/149:41 am
STL
- SJU
1 stop7h 18m
Frontier
Fri 2/203:53 am
SJU
- STL
1 stop7h 03m
Frontier
Deal found 2/4![Frontier logo]()
$218
This Priceline deal was found by Cheapflights users on 2/2. 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.
Thu 3/53:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Mon 3/96:30 am
SJU
- STL
1 stop17h 49m
Frontier
Deal found 2/2![Frontier logo]()
$220
Best flights from St. Louis to Caribbean IslandsDiscover 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 February 5, 2026.
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 February 5, 2026.
This Priceline deal was found by Cheapflights users on 2/4. 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 3/184:51 pm
STL
- SJU
1 stop8h 07m
Frontier
Tue 3/243:08 am
SJU
- STL
1 stop29h 09m
Frontier
Deal found 2/4![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/173:49 pm
STL
- STT
1 stop20h 42m
Multiple Airlines
Tue 2/245:40 pm
STT
- STL
2 stops15h 11m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 2/3. 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.
Sun 5/311:43 am
STL
- SJU
1 stop10h 30m
Delta
Sun 5/105:15 pm
SJU
- STL
1 stop7h 44m
Delta
Deal found 2/3![Delta logo]()
$246
This Southwest deal was found by Cheapflights users on 2/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/31:45 pm
STL
- SJU
1 stop8h 50m
Southwest
Tue 3/105:55 am
SJU
- STL
1 stop9h 00m
Southwest
Deal found 2/2![Southwest logo]()
$246
This Flightnetwork deal was found by Cheapflights users on 2/2. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/14:05 pm
STL
- AUA
1 stop20h 55m
Air Canada
Tue 3/103:05 pm
AUA
- STL
1 stop25h 24m
Air Canada
Deal found 2/2![Air Canada logo]()
$328
This United Airlines deal was found by Cheapflights users on 2/5. 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 2/236:25 am
STL
- GCM
1 stop6h 20m
United Airlines
Mon 3/22:50 pm
GCM
- STL
1 stop7h 15m
United Airlines
Deal found 2/5![United Airlines logo]()
$331
This American Airlines deal was found by Cheapflights users on 2/5. 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.
Tue 3/108:00 am
STL
- GCM
2 stops11h 15m
American Airlines
Tue 3/1712:00 pm
GCM
- STL
2 stops11h 44m
American Airlines
Deal found 2/5![American Airlines logo]()
$347
This Frontier deal was found by Cheapflights users on 2/4. 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.
Mon 3/23:49 pm
STL
- SJU
1 stop6h 54m
Frontier
Wed 3/45:25 pm
SJU
- STL
1 stop7h 02m
Frontier
Deal found 2/4![Frontier logo]()
$202
This Delta deal was found by Cheapflights users on 2/2. 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.
Tue 2/246:00 am
STL
- SJU
1 stop9h 27m
Delta
Tue 3/34:30 pm
SJU
- STL
1 stop8h 53m
Delta
Deal found 2/2![Delta logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/13:49 pm
STL
- STT
1 stop20h 42m
Multiple Airlines
Wed 3/43:36 pm
STT
- STL
1 stop8h 51m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$247
This Delta deal was found by Cheapflights users on 2/2. 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.
Tue 3/1012:04 pm
STL
- SJU
1 stop7h 14m
Delta
Tue 3/177:30 am
SJU
- STL
1 stop11h 23m
Delta
Deal found 2/2![Delta logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Sun 3/13:49 pm
STL
- STT
1 stop20h 42m
Multiple Airlines
Tue 3/35:40 pm
STT
- STL
2 stops30h 47m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$261
This Delta deal was found by Cheapflights users on 2/4. 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.
Sun 5/311:43 am
STL
- SJU
1 stop7h 41m
Delta
Wed 5/67:30 am
SJU
- STL
1 stop11h 14m
Delta
Deal found 2/4![Delta logo]()
$246
This Delta deal was found by Cheapflights users on 2/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1010:12 am
STL
- SJU
1 stop9h 06m
Delta
Fri 3/136:15 am
SJU
- STL
1 stop9h 58m
Delta
Deal found 2/1![Delta logo]()
$246
This United Airlines deal was found by Cheapflights users on 2/5. 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.
Tue 3/106:25 am
STL
- GCM
1 stop6h 20m
United Airlines
Tue 3/174:45 pm
GCM
- STL
1 stop16h 36m
United Airlines
Deal found 2/5![United Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 2/4. 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.
Wed 3/48:17 pm
STL
- STT
2 stops16h 14m
Multiple Airlines
Wed 3/112:36 pm
STT
- STL
1 stop17h 41m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$294
This Air Canada deal was found by Cheapflights users on 2/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:30 am
STL
- NAS
1 stop9h 00m
Air Canada
Mon 6/16:30 pm
NAS
- STL
1 stop18h 36m
Air Canada
Deal found 2/2![Air Canada logo]()
$360
This Delta deal was found by Cheapflights users on 2/2. 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.
Tue 3/1012:04 pm
STL
- SJU
1 stop10h 11m
Delta
Wed 3/186:15 am
SJU
- STL
1 stop11h 01m
Delta
Deal found 2/2![Delta logo]()
$246
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/286:20 pm
STL
- STX
1 stop17h 33m
American Airlines
Thu 3/54:38 pm
STX
- STL
1 stop17h 57m
American Airlines
Deal found 2/1![American Airlines logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2411:27 am
STL
- PUJ
1 stop25h 50m
Frontier
Tue 3/313:32 pm
PUJ
- STL
2 stops32h 53m
Frontier
Deal found 2/3![Frontier logo]()
$344
This Southwest deal was found by Cheapflights users on 2/4. 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.
Tue 3/105:15 am
STL
- PUJ
1 stop7h 20m
Southwest
Tue 3/241:25 pm
PUJ
- STL
1 stop10h 40m
Southwest
Deal found 2/4![Southwest logo]()
$381
This Air Canada deal was found by Cheapflights users on 2/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/67:30 am
STL
- NAS
1 stop9h 00m
Air Canada
Sat 6/206:30 pm
NAS
- STL
1 stop18h 51m
Air Canada
Deal found 2/2![Air Canada logo]()
$360
This Delta deal was found by Cheapflights users on 2/3. 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.
Sun 5/311:43 am
STL
- SJU
1 stop7h 41m
Delta
Thu 5/75:15 pm
SJU
- STL
1 stop7h 44m
Delta
Deal found 2/3![Delta logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:49 pm
STL
- STT
1 stop20h 42m
Multiple Airlines
Sun 3/82:36 pm
STT
- STL
1 stop17h 26m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$299
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/286:20 pm
STL
- STX
1 stop17h 36m
American Airlines
Tue 3/315:17 pm
STX
- STL
1 stop18h 15m
American Airlines
Deal found 2/2![American Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 3/316:00 am
STL
- GCM
1 stop6h 30m
United Airlines
Tue 4/71:35 pm
GCM
- STL
1 stop8h 53m
United Airlines
Deal found 2/2![United Airlines logo]()
$367
This Southwest deal was found by Cheapflights users on 2/4. 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.
Wed 2/256:50 am
STL
- MBJ
1 stop6h 20m
Southwest
Wed 3/42:00 pm
MBJ
- STL
1 stop8h 25m
Southwest
Deal found 2/4![Southwest logo]()
$384
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/65:14 am
STL
- STX
1 stop10h 23m
American Airlines
Wed 3/115:17 pm
STX
- STL
1 stop7h 41m
American Airlines
Deal found 2/2![American Airlines logo]()
$364
This Air Canada deal was found by Cheapflights users on 2/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/304:05 pm
STL
- NAS
1 stop27h 00m
Air Canada
Sat 4/49:10 pm
NAS
- STL
1 stop19h 14m
Air Canada
Deal found 2/2![Air Canada logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/2411:27 am
STL
- STT
2 stops27h 01m
Multiple Airlines
Thu 4/22:36 pm
STT
- STL
1 stop17h 52m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$304
Last-minute flights from St. Louis to Caribbean IslandsDiscover last-minute flight deals from St. Louis to Caribbean Islands. Data last updated February 5, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Caribbean Islands. Data last updated February 5, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/910:16 am
STL
- SJU
1 stop6h 24m
Frontier
Wed 2/255:25 pm
SJU
- STL
1 stop7h 02m
Frontier
Deal found 2/2![Frontier logo]()
$209
This Super.com deal was found by Cheapflights users on 2/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/149:41 am
STL
- SJU
1 stop7h 18m
Frontier
Fri 2/203:53 am
SJU
- STL
1 stop7h 03m
Frontier
Deal found 2/4![Frontier logo]()
$218
This Priceline deal was found by Cheapflights users on 2/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/173:49 pm
STL
- SJU
1 stop6h 54m
Frontier
Fri 2/203:53 am
SJU
- STL
1 stop7h 03m
Frontier
Deal found 2/3![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/243:49 pm
STL
- STT
1 stop20h 42m
Multiple Airlines
Tue 3/35:40 pm
STT
- STL
2 stops15h 11m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Sat 2/283:49 pm
STL
- STT
1 stop20h 42m
Multiple Airlines
Tue 3/35:40 pm
STT
- STL
2 stops15h 11m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$215
This Priceline deal was found by Cheapflights users on 2/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Wed 3/45:25 pm
SJU
- STL
1 stop7h 02m
Frontier
Deal found 2/3![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:22 pm
STL
- STT
2 stops18h 12m
Multiple Airlines
Wed 3/43:36 pm
STT
- STL
1 stop8h 51m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$209
This CheapOair deal was found by Cheapflights users on 2/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Mon 3/96:30 am
SJU
- STL
1 stop17h 49m
Frontier
Deal found 2/2![Frontier logo]()
$208
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/53:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Tue 3/1011:07 am
SJU
- STL
1 stop13h 12m
Frontier
Deal found 2/2![Frontier logo]()
$211
This Priceline deal was found by Cheapflights users on 2/2. 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.
Thu 3/53:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Mon 3/96:30 am
SJU
- STL
1 stop17h 49m
Frontier
Deal found 2/2![Frontier logo]()
$220
This Super.com deal was found by Cheapflights users on 2/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/104:51 pm
STL
- SJU
1 stop8h 12m
Frontier
Tue 3/176:30 am
SJU
- STL
1 stop17h 49m
Frontier
Deal found 2/3![Frontier logo]()
$199
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/104:51 pm
STL
- SJU
1 stop8h 12m
Frontier
Mon 3/165:30 am
SJU
- STL
1 stop13h 10m
Frontier
Deal found 2/2![Frontier logo]()
$221
One-way flights from St. Louis to Caribbean IslandsSearch for one-way flight options from St. Louis to Caribbean Islands. Find affordable one-way fares based on user searches. Data last updated February 5, 2026.
Search for one-way flight options from St. Louis to Caribbean Islands. Find affordable one-way fares based on user searches. Data last updated February 5, 2026.
This Expedia deal was found by Cheapflights users on 2/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/74:21 pm
STL
- SJU
1 stop9h 37m
Frontier
Deal found 2/3![Frontier logo]()
$55
This Priceline deal was found by Cheapflights users on 2/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:49 pm
STL
- SJU
1 stop9h 04m
Frontier
Deal found 2/3![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Mon 3/28:22 pm
STL
- SJU
2 stops20h 36m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Mon 2/238:22 pm
STL
- SJU
2 stops20h 36m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$98
This Priceline deal was found by Cheapflights users on 2/5. 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 3/23:49 pm
STL
- SJU
1 stop6h 54m
Frontier
Deal found 2/5![Frontier logo]()
$101
This Delta deal was found by Cheapflights users on 2/2. 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 2/236:00 am
STL
- GCM
1 stop5h 29m
Delta
Deal found 2/2![Delta logo]()
$106
This Priceline deal was found by Cheapflights users on 2/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/193:49 pm
STL
- SJU
1 stop17h 38m
Frontier
Deal found 2/3![Frontier logo]()
$107
This Trip.com deal was found by Cheapflights users on 2/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:20 pm
STL
- MBJ
1 stop12h 05m
Frontier
Deal found 2/2![Frontier logo]()
$112
This Trip.com deal was found by Cheapflights users on 2/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/278:22 pm
STL
- SXM
2 stops15h 53m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 2/5. 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.
Mon 3/92:09 pm
STL
- SJU
2 stops26h 49m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$112
This Trip.com deal was found by Cheapflights users on 2/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/218:17 pm
STL
- MBJ
1 stop12h 00m
Frontier
Deal found 2/4![Frontier logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/218:17 pm
STL
- SJU
2 stops17h 14m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$114
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 February 5, 2026.
Round-trip from | $188 (Priceline) |
|---|---|
One-way from | $55 (Expedia) |
Popular in | December |
Cheapest in | September |
Average price | $436 |
Cheapflights Fare Finder
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 February 5, 2026.
Use the filters below to find and compare flights from St. Louis to Caribbean Islands that are best for you.
Fly from
St. Louis
Fly to
Caribbean Islands
Route
Depart
Return
Price
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Wed 3/18
4:51 pm-1:58 am
1 stop8h 07m
San Juan Luis Munoz Marin Intl
Tue 3/24
3:08 am-7:17 am
1 stop29h 09m
$202
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Mon 3/2
3:49 pm-12:43 am
1 stop6h 54m
San Juan Luis Munoz Marin Intl
Wed 3/4
5:25 pm-10:27 pm
1 stop7h 02m
$202
St. LouisSaint Thomas Island
STL - STT
STLSTT
Lambert-St Louis
Tue 2/17
3:49 pm-2:31 pm
1 stop20h 42m
Saint Thomas Island Cyril E King
Tue 2/24
5:40 pm-6:51 am
2 stops15h 11m
$227
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Sun 5/3
11:43 am-11:13 pm
1 stop10h 30m
San Juan Luis Munoz Marin Intl
Sun 5/10
5:15 pm-11:59 pm
1 stop7h 44m
$246
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Tue 3/3
1:45 pm-12:35 am
1 stop8h 50m
San Juan Luis Munoz Marin Intl
Tue 3/10
5:55 am-1:55 pm
1 stop9h 00m
$246
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Tue 2/24
6:00 am-5:27 pm
1 stop9h 27m
San Juan Luis Munoz Marin Intl
Tue 3/3
4:30 pm-11:23 pm
1 stop8h 53m
$246
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Tue 3/10
12:04 pm-8:18 pm
1 stop7h 14m
San Juan Luis Munoz Marin Intl
Tue 3/17
7:30 am-5:53 pm
1 stop11h 23m
$246
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Sun 5/3
11:43 am-8:24 pm
1 stop7h 41m
San Juan Luis Munoz Marin Intl
Wed 5/6
7:30 am-5:44 pm
1 stop11h 14m
$246
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Tue 3/10
10:12 am-8:18 pm
1 stop9h 06m
San Juan Luis Munoz Marin Intl
Fri 3/13
6:15 am-3:13 pm
1 stop9h 58m
$246
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Tue 3/10
12:04 pm-11:15 pm
1 stop10h 11m
San Juan Luis Munoz Marin Intl
Wed 3/18
6:15 am-4:16 pm
1 stop11h 01m
$246
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.
STL-SJU
STL-STT
STL-GCM
STL-SXM
STL-NAS
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
STL-zzEPX
STL-SJU
STL-STT
STL-GCM
STL-SXM
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 $144). Flying from St. Louis to Caribbean Islands in June is currently the most expensive (average of $253). 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 February 5, 2026.
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.
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 February 5, 2026.
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.
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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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.
Complete your trip
Complete your trip to Caribbean Islands by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Caribbean Islands by cabin class
Find flights from St. Louis to Caribbean Islands, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Caribbean Islands flights
Browse other St. Louis and Caribbean Islands flight options. Last updated on February 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Caribbean Islands flights
Consider these flights traveling from St. Louis to Caribbean Islands.
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 February 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$133 | Average$404 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$146 | Average$329 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$180 | Average$582 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$219 | Average$744 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$225 | Average$502 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$236 | Average$611 | FlexibilityNo cancel fee | On-time71% |