$88+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
May 23 — May 301
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 April 23, 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 April 23, 2026.
This Priceline deal was found by Cheapflights users on 4/20. 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.
Fri 5/84:19 pm
STL
- SJU
1 stop8h 49m
Frontier
Sun 5/103:03 am
SJU
- STL
1 stop22h 18m
Frontier
Deal found 4/20![Frontier logo]()
$186
This Priceline deal was found by Cheapflights users on 4/20. 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 5/44:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Fri 5/83:33 pm
SJU
- STL
1 stop9h 48m
Frontier
Deal found 4/20![Frontier logo]()
$196
This Frontier deal was found by Cheapflights users on 4/19. 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.
Sun 5/34:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Thu 5/73:33 pm
SJU
- STL
1 stop9h 48m
Frontier
Deal found 4/19![Frontier logo]()
$206
This Frontier deal was found by Cheapflights users on 4/18. 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.
Sun 5/34:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Sat 5/93:33 pm
SJU
- STL
1 stop9h 48m
Frontier
Deal found 4/18![Frontier logo]()
$216
This Frontier deal was found by Cheapflights users on 4/18. 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.
Sat 5/164:19 pm
STL
- SJU
1 stop8h 49m
Frontier
Sat 5/236:25 am
SJU
- STL
1 stop14h 06m
Frontier
Deal found 4/18![Frontier logo]()
$221
This Frontier deal was found by Cheapflights users on 4/20. 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.
Sat 5/24:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Fri 5/83:33 pm
SJU
- STL
1 stop9h 48m
Frontier
Deal found 4/20![Frontier logo]()
$226
This Priceline deal was found by Cheapflights users on 4/18. 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 4/304:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Sun 5/36:30 am
SJU
- STL
1 stop17h 49m
Frontier
Deal found 4/18![Frontier logo]()
$230
This Priceline deal was found by Cheapflights users on 4/19. 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.
Fri 5/14:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Sun 5/33:21 am
SJU
- STL
1 stop20h 58m
Frontier
Deal found 4/19![Frontier logo]()
$236
This Frontier deal was found by Cheapflights users on 4/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/277:19 pm
STL
- SJU
1 stop8h 36m
Frontier
Wed 7/16:25 am
SJU
- STL
1 stop12h 53m
Frontier
Deal found 4/21![Frontier logo]()
$240
This deal was found by Cheapflights users on 4/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/64:19 pm
STL
- SJU
1 stop8h 49m
Frontier
Thu 6/114:05 pm
SJU
- STL
1 stop9h 04m
Frontier
Deal found 4/20![Frontier logo]()
$249
This Frontier deal was found by Cheapflights users on 4/18. 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.
Sun 5/34:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Sun 5/106:09 pm
SJU
- STL
1 stop7h 12m
Frontier
Deal found 4/18![Frontier logo]()
$251
This Frontier deal was found by Cheapflights users on 4/18. 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.
Sat 4/254:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Sat 5/23:26 pm
SJU
- STL
1 stop8h 53m
Frontier
Deal found 4/18![Frontier logo]()
$256
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 April 23, 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 April 23, 2026.
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Tue 9/225:00 am
STL
- SJU
1 stop8h 44m
United Airlines
Mon 9/281:00 am
SJU
- STL
2 stops12h 20m
United Airlines
Deal found 4/22![United Airlines logo]()
$276
This Delta deal was found by Cheapflights users on 4/19. 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 9/31:30 pm
STL
- SJU
1 stop7h 53m
Delta
Tue 9/85:45 pm
SJU
- STL
1 stop6h 52m
Delta
Deal found 4/19![Delta logo]()
$336
This Justfly.com deal was found by Cheapflights users on 4/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:27 pm
STL
- PUJ
1 stop19h 57m
Frontier
Sun 5/173:35 pm
PUJ
- STL
1 stop18h 20m
Frontier
Deal found 4/22![Frontier logo]()
$369
This Southwest deal was found by Cheapflights users on 4/21. 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 9/411:40 am
STL
- SJU
1 stop10h 10m
Southwest
Mon 9/78:55 pm
SJU
- STL
1 stop11h 45m
Southwest
Deal found 4/21![Southwest logo]()
$373
This American Airlines deal was found by Cheapflights users on 4/20. 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 5/77:00 am
STL
- AUA
1 stop7h 20m
American Airlines
Fri 5/153:00 pm
AUA
- STL
2 stops18h 54m
American Airlines
Deal found 4/20![American Airlines logo]()
$396
This Air Canada deal was found by Cheapflights users on 4/20. 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.
Sun 8/238:55 am
STL
- GCM
1 stop26h 30m
Air Canada
Thu 8/2712:25 pm
GCM
- STL
1 stop7h 42m
Air Canada
Deal found 4/20![Air Canada logo]()
$445
This Delta deal was found by Cheapflights users on 4/22. 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.
Mon 9/216:00 am
STL
- SJU
1 stop6h 16m
Delta
Thu 10/15:41 pm
SJU
- STL
1 stop6h 56m
Delta
Deal found 4/22![Delta logo]()
$336
This Delta deal was found by Cheapflights users on 4/18. 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 9/56:00 am
STL
- SJU
1 stop9h 35m
Delta
Sat 9/1912:58 pm
SJU
- STL
1 stop8h 52m
Delta
Deal found 4/18![Delta logo]()
$336
This Delta deal was found by Cheapflights users on 4/22. 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.
Tue 5/196:00 am
STL
- NAS
1 stop9h 35m
Delta
Tue 5/266:00 pm
NAS
- STL
1 stop6h 59m
Delta
Deal found 4/22![Delta logo]()
$376
This Southwest deal was found by Cheapflights users on 4/20. 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 8/57:15 am
STL
- SJU
2 stops9h 55m
Southwest
Mon 8/105:30 am
SJU
- STL
2 stops10h 40m
Southwest
Deal found 4/20![Southwest logo]()
$467
This Mytrip deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/161:05 pm
STL
- SXM
2 stops50h 55m
Air Canada
Sat 6/206:00 pm
SXM
- STL
2 stops51h 25m
Air Canada
Deal found 4/17![Air Canada logo]()
$475
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Mon 6/226:00 am
STL
- NAS
1 stop7h 57m
United Airlines
Fri 6/263:59 pm
NAS
- STL
1 stop6h 27m
United Airlines
Deal found 4/22![United Airlines logo]()
$476
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/235:27 pm
STL
- PUJ
2 stops19h 50m
Frontier
Fri 5/293:35 pm
PUJ
- STL
1 stop18h 20m
Frontier
Deal found 4/22![Frontier logo]()
$493
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Sun 7/266:12 pm
STL
- GCM
1 stop17h 13m
American Airlines
Wed 7/292:45 pm
GCM
- STL
1 stop9h 11m
American Airlines
Deal found 4/22![American Airlines logo]()
$502
This Expedia deal was found by Cheapflights users on 4/19. 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.
Sun 8/28:55 am
STL
- MBJ
1 stop26h 25m
Air Canada
Thu 8/612:30 pm
MBJ
- STL
1 stop25h 32m
Air Canada
Deal found 4/19![Air Canada logo]()
$478
This Delta deal was found by Cheapflights users on 4/19. 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 5/87:01 pm
STL
- AUA
2 stops15h 09m
Delta
Sat 5/233:25 pm
AUA
- STL
1 stop7h 13m
Delta
Deal found 4/19![Delta logo]()
$396
This FlightHub deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:31 pm
STL
- PUJ
1 stop18h 54m
Frontier
Tue 7/73:39 pm
PUJ
- STL
1 stop18h 13m
Frontier
Deal found 4/19![Frontier logo]()
$500
This Southwest deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2110:55 am
STL
- MBJ
Nonstop3h 40m
Southwest
Sat 6/272:05 pm
MBJ
- STL
Nonstop3h 45m
Southwest
Deal found 4/19![Southwest logo]()
$504
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Sat 6/276:00 am
STL
- MBJ
1 stop6h 50m
United Airlines
Thu 7/24:12 pm
MBJ
- STL
2 stops16h 29m
United Airlines
Deal found 4/20![United Airlines logo]()
$508
This American Airlines deal was found by Cheapflights users on 4/19. 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 8/16:06 am
STL
- MBJ
1 stop7h 56m
American Airlines
Tue 8/42:23 pm
MBJ
- STL
1 stop9h 33m
American Airlines
Deal found 4/19![American Airlines logo]()
$518
This Southwest deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/209:25 am
STL
- MBJ
Nonstop3h 40m
Southwest
Sat 6/272:05 pm
MBJ
- STL
Nonstop3h 45m
Southwest
Deal found 4/20![Southwest logo]()
$504
This Delta deal was found by Cheapflights users on 4/18. 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 5/136:00 am
STL
- STT
1 stop6h 51m
Delta
Wed 5/203:01 pm
STT
- STL
1 stop9h 58m
Delta
Deal found 4/18![Delta logo]()
$420
This FlightHub deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2310:05 am
STL
- PUJ
Nonstop4h 22m
Frontier
Thu 5/283:35 pm
PUJ
- STL
1 stop18h 20m
Frontier
Deal found 4/19![Frontier logo]()
$514
This Air Canada deal was found by Cheapflights users on 4/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/102:40 pm
STL
- UVF
1 stop22h 40m
Air Canada
Tue 8/183:15 pm
UVF
- STL
1 stop23h 47m
Air Canada
Deal found 4/22![Air Canada logo]()
$532
This American Airlines deal was found by Cheapflights users on 4/22. 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 7/167:26 pm
STL
- MBJ
1 stop20h 48m
American Airlines
Tue 7/2112:30 pm
MBJ
- STL
1 stop20h 02m
American Airlines
Deal found 4/22![American Airlines logo]()
$541
This Southwest deal was found by Cheapflights users on 4/20. 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 6/211:35 am
STL
- SJU
2 stops8h 30m
Southwest
Tue 6/97:00 am
SJU
- STL
2 stops8h 45m
Southwest
Deal found 4/20![Southwest logo]()
$524
This United Airlines deal was found by Cheapflights users on 4/19. 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 5/115:28 pm
STL
- MBJ
2 stops20h 02m
United Airlines
Wed 5/132:40 pm
MBJ
- STL
1 stop7h 50m
United Airlines
Deal found 4/19![United Airlines logo]()
$579
This FlightHub deal was found by Cheapflights users on 4/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:10 pm
STL
- UVF
2 stops25h 10m
Air Canada
Fri 8/283:15 pm
UVF
- STL
2 stops28h 27m
Air Canada
Deal found 4/22![Air Canada logo]()
$537
This Delta deal was found by Cheapflights users on 4/22. 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.
Sat 5/912:59 pm
STL
- SJU
1 stop6h 31m
Delta
Wed 5/131:14 pm
SJU
- STL
1 stop11h 45m
Delta
Deal found 4/22![Delta logo]()
$446
This United Airlines deal was found by Cheapflights users on 4/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/206:00 am
STL
- GCM
1 stop7h 30m
United Airlines
Sat 6/271:50 pm
GCM
- STL
1 stop7h 36m
United Airlines
Deal found 4/21![United Airlines logo]()
$579
Last-minute flights from St. Louis to CaribbeanDiscover last-minute flight deals from St. Louis to Caribbean. Data last updated April 23, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Caribbean. Data last updated April 23, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 4/18. 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.
Sat 4/254:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Sat 5/23:26 pm
SJU
- STL
1 stop8h 53m
Frontier
Deal found 4/18![Frontier logo]()
$256
This Frontier deal was found by Cheapflights users on 4/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Mon 5/411:07 am
SJU
- STL
1 stop13h 12m
Frontier
Deal found 4/21![Frontier logo]()
$260
This Priceline deal was found by Cheapflights users on 4/18. 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 4/304:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Sun 5/36:30 am
SJU
- STL
1 stop17h 49m
Frontier
Deal found 4/18![Frontier logo]()
$230
This Priceline deal was found by Cheapflights users on 4/19. 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.
Fri 5/14:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Sun 5/33:21 am
SJU
- STL
1 stop20h 58m
Frontier
Deal found 4/19![Frontier logo]()
$236
This Frontier deal was found by Cheapflights users on 4/20. 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.
Sat 5/24:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Fri 5/83:33 pm
SJU
- STL
1 stop9h 48m
Frontier
Deal found 4/20![Frontier logo]()
$226
This Frontier deal was found by Cheapflights users on 4/19. 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.
Sun 5/34:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Thu 5/73:33 pm
SJU
- STL
1 stop9h 48m
Frontier
Deal found 4/19![Frontier logo]()
$206
This Frontier deal was found by Cheapflights users on 4/18. 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.
Sun 5/34:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Sat 5/93:33 pm
SJU
- STL
1 stop9h 48m
Frontier
Deal found 4/18![Frontier logo]()
$216
This Frontier deal was found by Cheapflights users on 4/18. 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.
Sun 5/34:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Sun 5/106:09 pm
SJU
- STL
1 stop7h 12m
Frontier
Deal found 4/18![Frontier logo]()
$251
This Priceline deal was found by Cheapflights users on 4/20. 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 5/44:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Fri 5/83:33 pm
SJU
- STL
1 stop9h 48m
Frontier
Deal found 4/20![Frontier logo]()
$196
This Priceline deal was found by Cheapflights users on 4/20. 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.
Fri 5/84:19 pm
STL
- SJU
1 stop8h 49m
Frontier
Sun 5/103:03 am
SJU
- STL
1 stop22h 18m
Frontier
Deal found 4/20![Frontier logo]()
$186
This Expedia deal was found by Cheapflights users on 4/19. 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.
Fri 5/84:19 pm
STL
- PUJ
1 stop15h 59m
Frontier
Sat 5/1610:33 am
PUJ
- STL
1 stop14h 48m
Frontier
Deal found 4/19![Frontier logo]()
$262
This Frontier deal was found by Cheapflights users on 4/18. 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.
Sat 5/164:19 pm
STL
- SJU
1 stop8h 49m
Frontier
Sat 5/236:25 am
SJU
- STL
1 stop14h 06m
Frontier
Deal found 4/18![Frontier logo]()
$221
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 April 23, 2026.
Search for one-way flight options from St. Louis to Caribbean. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
This Frontier deal was found by Cheapflights users on 4/18. 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.
Fri 5/154:19 pm
STL
- SJU
1 stop8h 49m
Frontier
Deal found 4/18![Frontier logo]()
$88
This Frontier deal was found by Cheapflights users on 4/20. 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 5/184:19 pm
STL
- SJU
1 stop8h 49m
Frontier
Deal found 4/20![Frontier logo]()
$98
This Frontier deal was found by Cheapflights users on 4/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/234:17 pm
STL
- SJU
1 stop8h 52m
Frontier
Deal found 4/21![Frontier logo]()
$118
This Priceline deal was found by Cheapflights users on 4/20. 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.
Fri 5/154:19 pm
STL
- PUJ
1 stop15h 59m
Frontier
Deal found 4/20![Frontier logo]()
$119
This Priceline deal was found by Cheapflights users on 4/19. 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.
Sat 6/277:19 pm
STL
- SJU
1 stop8h 36m
Frontier
Deal found 4/19![Frontier logo]()
$120
This Super.com deal was found by Cheapflights users on 4/19. 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 5/234:19 pm
STL
- SJU
1 stop14h 45m
Frontier
Deal found 4/19![Frontier logo]()
$122
This Super.com deal was found by Cheapflights users on 4/21. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Deal found 4/21![Frontier logo]()
$127
This Frontier deal was found by Cheapflights users on 4/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/294:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Deal found 4/21![Frontier logo]()
$132
This Priceline deal was found by Cheapflights users on 4/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/254:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Deal found 4/22![Frontier logo]()
$133
This Super.com deal was found by Cheapflights users on 4/19. 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.
Fri 6/194:17 pm
STL
- SJU
1 stop8h 52m
Frontier
Deal found 4/19![Frontier logo]()
$137
This Frontier deal was found by Cheapflights users on 4/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/114:17 pm
STL
- SJU
1 stop8h 52m
Frontier
Deal found 4/21![Frontier logo]()
$138
This Delta deal was found by Cheapflights users on 4/22. 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.
Sun 5/316:00 am
STL
- AUA
1 stop7h 10m
Delta
Deal found 4/22![Delta logo]()
$163
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 April 23, 2026.
Round-trip from | $186 (Priceline) |
|---|---|
One-way from | $88 (Frontier) |
Popular in | December |
Cheapest in | September |
Average price | $339 |
Good round-trip deal | $609 or less |
Good one-way deal | $294 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 April 23, 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
Tue 9/22
5:00 am-2:44 pm
1 stop8h 44m
San Juan Luis Munoz Marin Intl
Mon 9/28
1:00 am-12:20 pm
2 stops12h 20m
$276
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Thu 9/3
1:30 pm-10:23 pm
1 stop7h 53m
San Juan Luis Munoz Marin Intl
Tue 9/8
5:45 pm-11:37 pm
1 stop6h 52m
$336
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Mon 9/21
6:00 am-1:16 pm
1 stop6h 16m
San Juan Luis Munoz Marin Intl
Thu 10/1
5:41 pm-11:37 pm
1 stop6h 56m
$336
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Sat 9/5
6:00 am-4:35 pm
1 stop9h 35m
San Juan Luis Munoz Marin Intl
Sat 9/19
12:58 pm-8:50 pm
1 stop8h 52m
$336
St. LouisPunta Cana
STL - PUJ
STLPUJ
Lambert-St Louis
Sat 5/9
5:27 pm-2:24 pm
1 stop19h 57m
Punta Cana
Sun 5/17
3:35 pm-8:55 am
1 stop18h 20m
$369
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Fri 9/4
11:40 am-10:50 pm
1 stop10h 10m
San Juan Luis Munoz Marin Intl
Mon 9/7
8:55 pm-7:40 am
1 stop11h 45m
$373
St. LouisNassau
STL - NAS
STLNAS
Lambert-St Louis
Tue 5/19
6:00 am-4:35 pm
1 stop9h 35m
Nassau Intl
Tue 5/26
6:00 pm-11:59 pm
1 stop6h 59m
$376
St. LouisOranjestad
STL - AUA
STLAUA
Lambert-St Louis
Thu 5/7
7:00 am-3:20 pm
1 stop7h 20m
Oranjestad Reina Beatrix
Fri 5/15
3:00 pm-8:54 am
2 stops18h 54m
$396
St. LouisOranjestad
STL - AUA
STLAUA
Lambert-St Louis
Fri 5/8
7:01 pm-11:10 am
2 stops15h 09m
Oranjestad Reina Beatrix
Sat 5/23
3:25 pm-9:38 pm
1 stop7h 13m
$396
St. LouisSaint Thomas Island
STL - STT
STLSTT
Lambert-St Louis
Wed 5/13
6:00 am-1:51 pm
1 stop6h 51m
Saint Thomas Island Cyril E King
Wed 5/20
3:01 pm-11:59 pm
1 stop9h 58m
$420
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-SJU
STL-PUJ
STL-AUA
STL-GCM
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
STL-0CB
STL-SJU
STL-PUJ
STL-AUA
STL-GCM
What is the cheapest month to book a flight from St. Louis to Caribbean?
Currently, July is the cheapest month in which you can book a flight from St. Louis to Caribbean (average of $101). Flying from St. Louis to Caribbean in June is currently the most expensive (average of $1,185). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from STL to CB?
Find hourly flight availability from St. Louis to Caribbean. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 23, 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.
Reviews of airlines servicing Caribbean
Get insights into the airlines that provide service to Caribbean. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Caribbean. Reviews last updated April 23, 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.
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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 April 23, 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 6 airlines flying from St. Louis to Caribbean
Discover the top 6 airlines that operate flights from St. Louis to Caribbean. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$138 | Average$444 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$170 | Average$334 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$174 | Average$595 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$219 | Average$667 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$225 | Average$521 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$230 | Average$614 | FlexibilityNo cancel fee | On-time71% |