$114+ Cheap flights from St. Louis (STL) to Caribbean
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
Aug 25 — Sep 11
Round-trip
1 adult, Economy
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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
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Cheapest flights from St. Louis to CaribbeanExplore the most affordable flight options available from St. Louis to Caribbean. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 26, 2026.
Explore the most affordable flight options available from St. Louis to Caribbean. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 8/316:17 pm
STL
- SJU
2 stops29h 39m
Frontier
Mon 9/147:00 am
SJU
- STL
1 stop10h 34m
Frontier
Deal found 7/26![Frontier logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Thu 8/206:17 pm
STL
- SJU
2 stops29h 39m
Frontier
Thu 8/273:48 pm
SJU
- STL
1 stop26h 34m
Frontier
Deal found 7/23![Frontier logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Thu 9/2410:35 am
STL
- SJU
1 stop27h 50m
Frontier
Wed 9/304:39 pm
SJU
- STL
2 stops42h 01m
Frontier
Deal found 7/23![Frontier logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/316:17 pm
STL
- SJU
2 stops29h 39m
Frontier
Sun 9/134:30 pm
SJU
- STL
1 stop18h 10m
Frontier
Deal found 7/22![Frontier logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 10/3110:35 am
STL
- SJU
2 stops37h 22m
Frontier
Wed 11/185:30 pm
SJU
- STL
1 stop18h 10m
Frontier
Deal found 7/23![Frontier logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 10/310:35 am
STL
- SJU
1 stop27h 50m
Frontier
Sat 10/104:39 pm
SJU
- STL
2 stops42h 01m
Frontier
Deal found 7/21![Frontier logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Fri 8/216:17 pm
STL
- SJU
2 stops29h 39m
Frontier
Fri 8/288:57 pm
SJU
- STL
1 stop20h 14m
Frontier
Deal found 7/21![Frontier logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 11/310:35 am
STL
- SJU
2 stops12h 22m
Frontier
Mon 11/167:05 am
SJU
- STL
1 stop14h 34m
Frontier
Deal found 7/23![Frontier logo]()
$330
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 10/3110:35 am
STL
- SJU
2 stops37h 22m
Frontier
Mon 11/167:05 am
SJU
- STL
1 stop14h 34m
Frontier
Deal found 7/23![Frontier logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Thu 10/2210:35 am
STL
- SJU
2 stops12h 03m
Frontier
Sun 10/253:51 pm
SJU
- STL
1 stop18h 49m
Frontier
Deal found 7/25![Frontier logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Fri 9/46:17 pm
STL
- SJU
1 stop18h 59m
Frontier
Tue 9/85:37 pm
SJU
- STL
2 stops20h 33m
Frontier
Deal found 7/24![Frontier logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Fri 8/216:17 pm
STL
- SJU
1 stop18h 59m
Frontier
Sun 8/233:10 am
SJU
- STL
2 stops15h 12m
Frontier
Deal found 7/23![Frontier logo]()
$340
Best flights from St. Louis to CaribbeanDiscover carefully curated flight deals from St. Louis to Caribbean that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 26, 2026.
Discover carefully curated flight deals from St. Louis to Caribbean that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 26, 2026.
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/214:55 pm
STL
- SJU
1 stop5h 55m
Southwest
Sun 8/239:25 pm
SJU
- STL
1 stop11h 20m
Southwest
Deal found 7/23![Southwest logo]()
$356
This Delta deal was found by Cheapflights users on 7/26. 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 9/177:05 am
STL
- SJU
1 stop8h 44m
Delta
Mon 9/212:59 pm
SJU
- STL
1 stop9h 43m
Delta
Deal found 7/26![Delta logo]()
$356
This United Airlines deal was found by Cheapflights users on 7/24. 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 9/306:00 am
STL
- SJU
2 stops13h 38m
United Airlines
Tue 10/67:00 am
SJU
- STL
1 stop8h 10m
United Airlines
Deal found 7/24![United Airlines logo]()
$356
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Mon 11/26:15 pm
STL
- STT
1 stop16h 02m
American Airlines
Fri 11/64:33 pm
STT
- STL
1 stop9h 25m
American Airlines
Deal found 7/22![American Airlines logo]()
$380
This Orbitz deal was found by Cheapflights users on 7/22. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:55 am
STL
- NAS
1 stop7h 35m
Air Canada
Sun 10/186:30 pm
NAS
- STL
2 stops49h 11m
Air Canada
Deal found 7/22![Air Canada logo]()
$463
This Justfly.com deal was found by Cheapflights users on 7/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:17 pm
STL
- PUJ
1 stop19h 10m
Frontier
Wed 8/2611:39 am
PUJ
- STL
2 stops30h 43m
Frontier
Deal found 7/25![Frontier logo]()
$491
This Southwest deal was found by Cheapflights users on 7/26. 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.
Mon 9/1411:40 am
STL
- SJU
1 stop10h 15m
Southwest
Thu 9/1711:35 am
SJU
- STL
1 stop9h 25m
Southwest
Deal found 7/26![Southwest logo]()
$356
This Delta deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:00 am
STL
- SJU
1 stop10h 29m
Delta
Sat 9/122:30 pm
SJU
- STL
1 stop7h 05m
Delta
Deal found 7/23![Delta logo]()
$356
This Southwest deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/42:25 pm
STL
- SJU
1 stop6h 50m
Southwest
Tue 9/87:00 pm
SJU
- STL
1 stop13h 40m
Southwest
Deal found 7/25![Southwest logo]()
$356
This American Airlines deal was found by Cheapflights users on 7/21. 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 9/811:35 am
STL
- NAS
1 stop6h 36m
American Airlines
Fri 9/116:45 pm
NAS
- STL
1 stop6h 14m
American Airlines
Deal found 7/21![American Airlines logo]()
$398
This United Airlines deal was found by Cheapflights users on 7/25. 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 12/26:15 am
STL
- GCM
1 stop9h 15m
United Airlines
Wed 12/95:45 pm
GCM
- STL
1 stop16h 57m
United Airlines
Deal found 7/25![United Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:00 am
STL
- NAS
1 stop5h 57m
Delta
Fri 8/283:22 pm
NAS
- STL
1 stop9h 36m
Delta
Deal found 7/25![Delta logo]()
$398
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:40 am
STL
- SJU
1 stop10h 10m
Southwest
Mon 8/248:55 pm
SJU
- STL
1 stop11h 45m
Southwest
Deal found 7/23![Southwest logo]()
$366
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Thu 9/36:36 am
STL
- NAS
2 stops11h 35m
American Airlines
Sun 9/62:32 pm
NAS
- STL
2 stops10h 26m
American Airlines
Deal found 7/22![American Airlines logo]()
$407
This Air Canada deal was found by Cheapflights users on 7/21. 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 9/198:55 am
STL
- NAS
1 stop7h 35m
Air Canada
Wed 9/232:35 pm
NAS
- STL
1 stop29h 06m
Air Canada
Deal found 7/21![Air Canada logo]()
$475
This Delta deal was found by Cheapflights users on 7/22. 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.
Fri 8/286:00 am
STL
- STT
1 stop6h 34m
Delta
Fri 9/42:49 pm
STT
- STL
1 stop10h 09m
Delta
Deal found 7/22![Delta logo]()
$410
This American Airlines deal was found by Cheapflights users on 7/26. 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 10/95:28 am
STL
- GCM
1 stop6h 02m
American Airlines
Tue 10/138:00 am
GCM
- STL
1 stop13h 56m
American Airlines
Deal found 7/26![American Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Sun 11/295:00 am
STL
- STT
1 stop7h 31m
United Airlines
Wed 12/22:15 pm
STT
- STL
2 stops10h 54m
United Airlines
Deal found 7/22![United Airlines logo]()
$462
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:10 am
STL
- SJU
1 stop11h 55m
Southwest
Mon 9/78:55 pm
SJU
- STL
1 stop11h 45m
Southwest
Deal found 7/21![Southwest logo]()
$396
This Air Canada deal was found by Cheapflights users on 7/25. 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.
Wed 8/262:40 pm
STL
- NAS
2 stops21h 55m
Air Canada
Fri 8/286:30 pm
NAS
- STL
2 stops25h 12m
Air Canada
Deal found 7/25![Air Canada logo]()
$486
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:00 am
STL
- GCM
1 stop8h 10m
American Airlines
Tue 8/2512:30 pm
GCM
- STL
1 stop10h 25m
American Airlines
Deal found 7/21![American Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 7/25. 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 1/207:04 pm
STL
- MBJ
2 stops18h 33m
United Airlines
Wed 1/272:48 pm
MBJ
- STL
1 stop9h 21m
United Airlines
Deal found 7/25![United Airlines logo]()
$476
This Southwest deal was found by Cheapflights users on 7/24. 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.
Thu 9/312:55 pm
STL
- SJU
1 stop8h 20m
Southwest
Sat 9/126:25 am
SJU
- STL
2 stops8h 55m
Southwest
Deal found 7/24![Southwest logo]()
$406
This American Airlines deal was found by Cheapflights users on 7/23. 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 10/316:00 am
STL
- GCM
2 stops13h 00m
American Airlines
Fri 11/63:45 pm
GCM
- STL
1 stop7h 02m
American Airlines
Deal found 7/23![American Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Sun 12/136:00 am
STL
- MBJ
1 stop6h 46m
United Airlines
Wed 12/162:48 pm
MBJ
- STL
1 stop9h 21m
United Airlines
Deal found 7/22![United Airlines logo]()
$476
This Delta deal was found by Cheapflights users on 7/26. 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 9/136:00 am
STL
- MBJ
1 stop5h 48m
Delta
Fri 9/184:50 pm
MBJ
- STL
1 stop6h 52m
Delta
Deal found 7/26![Delta logo]()
$476
This American Airlines deal was found by Cheapflights users on 7/25. 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 9/265:18 pm
STL
- GCM
2 stops18h 12m
American Airlines
Sat 10/108:00 am
GCM
- STL
1 stop9h 26m
American Airlines
Deal found 7/25![American Airlines logo]()
$424
This Southwest deal was found by Cheapflights users on 7/23. 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.
Thu 8/273:15 pm
STL
- SJU
2 stops7h 35m
Southwest
Mon 8/315:30 am
SJU
- STL
2 stops10h 40m
Southwest
Deal found 7/23![Southwest logo]()
$426
This Air Canada deal was found by Cheapflights users on 7/24. 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.
Fri 11/64:05 pm
STL
- PUJ
1 stop27h 35m
Air Canada
Sun 11/1512:35 pm
PUJ
- STL
2 stops28h 51m
Air Canada
Deal found 7/24![Air Canada logo]()
$581
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Sun 11/296:00 am
STL
- MBJ
1 stop6h 48m
United Airlines
Sat 12/52:48 pm
MBJ
- STL
1 stop7h 25m
United Airlines
Deal found 7/22![United Airlines logo]()
$511
Last-minute flights from St. Louis to CaribbeanDiscover last-minute flight deals from St. Louis to Caribbean. Data last updated July 26, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Caribbean. Data last updated July 26, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:34 pm
STL
- SJU
2 stops29h 07m
Frontier
Sun 8/163:10 am
SJU
- STL
1 stop21h 49m
Frontier
Deal found 7/22![Frontier logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/124:57 pm
STL
- SJU
2 stops30h 44m
Frontier
Mon 8/178:52 am
SJU
- STL
1 stop16h 07m
Frontier
Deal found 7/24![Frontier logo]()
$365
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:34 am
STL
- SJU
2 stops12h 21m
American Airlines
Wed 8/263:47 pm
SJU
- STL
2 stops9h 27m
American Airlines
Deal found 7/22![American Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Thu 8/206:17 pm
STL
- SJU
2 stops29h 39m
Frontier
Thu 8/273:48 pm
SJU
- STL
1 stop26h 34m
Frontier
Deal found 7/23![Frontier logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Fri 8/216:17 pm
STL
- SJU
2 stops29h 39m
Frontier
Fri 8/288:57 pm
SJU
- STL
1 stop20h 14m
Frontier
Deal found 7/21![Frontier logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Fri 8/216:17 pm
STL
- SJU
1 stop18h 59m
Frontier
Sun 8/233:10 am
SJU
- STL
2 stops15h 12m
Frontier
Deal found 7/23![Frontier logo]()
$340
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:40 am
STL
- SJU
1 stop10h 10m
Southwest
Mon 8/248:55 pm
SJU
- STL
1 stop11h 45m
Southwest
Deal found 7/23![Southwest logo]()
$366
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:35 am
STL
- SJU
1 stop9h 20m
American Airlines
Mon 8/317:03 am
SJU
- STL
1 stop17h 31m
American Airlines
Deal found 7/22![American Airlines logo]()
$356
This American Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:54 am
STL
- NAS
1 stop6h 39m
American Airlines
Wed 8/266:45 pm
NAS
- STL
1 stop17h 00m
American Airlines
Deal found 7/22![American Airlines logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Thu 8/276:17 pm
STL
- SJU
1 stop18h 59m
Frontier
Sun 8/303:10 am
SJU
- STL
2 stops15h 12m
Frontier
Deal found 7/23![Frontier logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 8/316:17 pm
STL
- SJU
2 stops29h 39m
Frontier
Mon 9/147:00 am
SJU
- STL
1 stop10h 34m
Frontier
Deal found 7/26![Frontier logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/316:17 pm
STL
- SJU
2 stops29h 39m
Frontier
Sun 9/134:30 pm
SJU
- STL
1 stop18h 10m
Frontier
Deal found 7/22![Frontier logo]()
$315
One-way flights from St. Louis to CaribbeanSearch for one-way flight options from St. Louis to Caribbean. Find affordable one-way fares based on user searches. Data last updated July 26, 2026.
Search for one-way flight options from St. Louis to Caribbean. Find affordable one-way fares based on user searches. Data last updated July 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 10/710:35 am
STL
- SJU
2 stops12h 22m
Frontier
Deal found 7/22![Frontier logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/2210:35 am
STL
- SJU
2 stops12h 22m
Frontier
Deal found 7/22![Frontier logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/1910:35 am
STL
- SJU
2 stops12h 22m
Frontier
Deal found 7/22![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 10/2010:35 am
STL
- SJU
2 stops12h 22m
Frontier
Deal found 7/24![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/246:17 pm
STL
- SJU
2 stops29h 39m
Frontier
Deal found 7/21![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Thu 8/206:17 pm
STL
- SJU
2 stops29h 39m
Frontier
Deal found 7/21![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Thu 10/2910:35 am
STL
- SJU
2 stops12h 22m
Frontier
Deal found 7/22![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 10/2110:35 am
STL
- SJU
2 stops12h 03m
Frontier
Deal found 7/22![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Thu 10/2210:35 am
STL
- SJU
2 stops36h 22m
Frontier
Deal found 7/22![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/236:17 pm
STL
- SJU
2 stops29h 39m
Frontier
Deal found 7/21![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 10/1710:35 am
STL
- SJU
2 stops12h 22m
Frontier
Deal found 7/21![Frontier logo]()
$129
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Thu 10/16:15 am
STL
- NAS
1 stop6h 32m
United Airlines
Deal found 7/24![United Airlines logo]()
$145
Find flight deals from St. Louis to Caribbean
Keep the following information in mind while searching for St. Louis to Caribbean flight deals. Data was last updated July 26, 2026.
Round-trip from | $302 (Kiwi.com) |
|---|---|
One-way from | $114 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $516 |
Good round-trip deal | $367 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Caribbean that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 26, 2026.
Use the filters below to find and compare flights from St. Louis to Caribbean that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Fri 8/21
4:55 pm-11:50 pm
1 stop5h 55m
San Juan Luis Munoz Marin Intl
Sun 8/23
9:25 pm-7:45 am
1 stop11h 20m
$356
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Thu 9/17
7:05 am-4:49 pm
1 stop8h 44m
San Juan Luis Munoz Marin Intl
Mon 9/21
2:59 pm-11:42 pm
1 stop9h 43m
$356
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Wed 9/30
6:00 am-8:38 pm
2 stops13h 38m
San Juan Luis Munoz Marin Intl
Tue 10/6
7:00 am-2:10 pm
1 stop8h 10m
$356
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Mon 9/14
11:40 am-10:55 pm
1 stop10h 15m
San Juan Luis Munoz Marin Intl
Thu 9/17
11:35 am-8:00 pm
1 stop9h 25m
$356
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Sat 9/5
11:00 am-10:29 pm
1 stop10h 29m
San Juan Luis Munoz Marin Intl
Sat 9/12
2:30 pm-8:35 pm
1 stop7h 05m
$356
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Fri 9/4
2:25 pm-10:15 pm
1 stop6h 50m
San Juan Luis Munoz Marin Intl
Tue 9/8
7:00 pm-7:40 am
1 stop13h 40m
$356
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Fri 8/21
11:40 am-10:50 pm
1 stop10h 10m
San Juan Luis Munoz Marin Intl
Mon 8/24
8:55 pm-7:40 am
1 stop11h 45m
$366
St. LouisSaint Thomas Island
STL - STT
STLSTT
Lambert-St Louis
Mon 11/2
6:15 pm-12:17 pm
1 stop16h 02m
Saint Thomas Island Cyril E King
Fri 11/6
4:33 pm-11:58 pm
1 stop9h 25m
$380
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Fri 9/4
10:10 am-11:05 pm
1 stop11h 55m
San Juan Luis Munoz Marin Intl
Mon 9/7
8:55 pm-7:40 am
1 stop11h 45m
$396
St. LouisNassau
STL - NAS
STLNAS
Lambert-St Louis
Tue 9/8
11:35 am-7:11 pm
1 stop6h 36m
Nassau Intl
Fri 9/11
6:45 pm-11:59 pm
1 stop6h 14m
$398
Showing 1-10 of 60 resultsSorted by cheapest first
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.
STL-NAS
STL-GCM
STL-UVF
STL-SJU
STL-STT
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
STL-0CB
STL-NAS
STL-GCM
STL-UVF
STL-SJU
What is the cheapest month to book a flight from St. Louis to Caribbean?
Currently, April is the cheapest month in which you can book a flight from St. Louis to Caribbean (average of $541). Flying from St. Louis to Caribbean in December is currently the most expensive (average of $683). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from STL to CB?
Find hourly flight availability from St. Louis to Caribbean. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 26, 2026.
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.
How far ahead should I book a flight from St. Louis to Caribbean?
To ensure you get the cheapest price possible for a flight from St. Louis to Caribbean, you should look to book at least 77 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Reviews of airlines servicing Caribbean
Get insights into the airlines that provide service to Caribbean. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Caribbean. Reviews last updated July 26, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from St. Louis to Caribbean to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Overall
8.0
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Overall
8.0
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Overall
8.0
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Overall
8.0
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Overall
8.0
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Overall
8.0
Comfort
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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.
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Alternative routes for St. Louis to Caribbean
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Caribbean by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Caribbean by cabin class
Find flights from St. Louis to Caribbean, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Caribbean flights
Browse other St. Louis and Caribbean flight options. Last updated on July 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Fly to Caribbean countries
Consider these flights traveling to countries located in Caribbean.
St. Louis to Caribbean flights
Consider these flights traveling from St. Louis to Caribbean.
Top 5 airlines flying from St. Louis to Caribbean
Discover the top 5 airlines that operate flights from St. Louis to Caribbean. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$148 | Average$472 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$204 | Average$653 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$225 | Average$537 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$250 | Average$650 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$296 | Average$682 | FlexibilityNo cancel fee | On-time63% |