$193+ Cheap flights from Seattle (SEA) 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
May 29 — Jun 51
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Caribbean with Cheapflights
1. Tell us where you want to go
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Cheapest flights from Seattle to CaribbeanExplore the most affordable flight options available from Seattle to Caribbean. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.
Explore the most affordable flight options available from Seattle to Caribbean. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.
This United Airlines deal was found by Cheapflights users on 4/28. 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 10/2411:59 pm
SEA
- STT
1 stop10h 31m
United Airlines
Fri 10/3012:02 pm
STT
- SEA
2 stops13h 57m
United Airlines
Deal found 4/28![United Airlines logo]()
$440
This Southwest deal was found by Cheapflights users on 4/26. 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.
Sun 9/206:50 pm
SEA
- SJU
2 stops13h 05m
Southwest
Sun 9/275:30 am
SJU
- SEA
1 stop12h 10m
Southwest
Deal found 4/26![Southwest logo]()
$454
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Sat 5/95:02 am
SEA
- SJU
1 stop9h 36m
United Airlines
Thu 5/147:20 am
SJU
- SEA
1 stop11h 22m
United Airlines
Deal found 4/25![United Airlines logo]()
$456
This American Airlines deal was found by Cheapflights users on 4/28. 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 5/512:34 pm
SEA
- STT
1 stop21h 01m
American Airlines
Tue 5/125:05 pm
STT
- SEA
2 stops20h 36m
American Airlines
Deal found 4/28![American Airlines logo]()
$465
This Southwest deal was found by Cheapflights users on 4/27. 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 8/136:15 pm
SEA
- SJU
2 stops11h 55m
Southwest
Tue 8/181:20 pm
SJU
- SEA
2 stops12h 45m
Southwest
Deal found 4/27![Southwest logo]()
$474
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Mon 5/45:25 pm
SEA
- STT
2 stops15h 55m
United Airlines
Sat 5/91:22 pm
STT
- SEA
1 stop12h 30m
United Airlines
Deal found 4/25![United Airlines logo]()
$478
This American Airlines deal was found by Cheapflights users on 4/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/61:47 pm
SEA
- SXM
1 stop20h 11m
American Airlines
Fri 12/115:25 pm
SXM
- SEA
2 stops20h 52m
American Airlines
Deal found 4/24![American Airlines logo]()
$486
This United Airlines deal was found by Cheapflights users on 4/29. 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 11/710:40 pm
SEA
- SXM
1 stop13h 17m
United Airlines
Sun 11/153:00 pm
SXM
- SEA
1 stop23h 00m
United Airlines
Deal found 4/29![United Airlines logo]()
$492
This American Airlines deal was found by Cheapflights users on 4/27. 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 6/16:00 am
SEA
- SJU
1 stop14h 59m
American Airlines
Thu 6/114:39 pm
SJU
- SEA
1 stop10h 29m
American Airlines
Deal found 4/27![American Airlines logo]()
$494
This American Airlines deal was found by Cheapflights users on 4/28. 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 12/28:15 am
SEA
- SJU
1 stop17h 04m
American Airlines
Wed 12/93:47 pm
SJU
- SEA
1 stop11h 51m
American Airlines
Deal found 4/28![American Airlines logo]()
$499
This CheapOair deal was found by Cheapflights users on 4/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/611:49 pm
SEA
- SJU
1 stop10h 27m
JetBlue
Mon 6/159:15 pm
SJU
- SEA
1 stop16h 20m
JetBlue
Deal found 4/24![JetBlue logo]()
$508
This Southwest deal was found by Cheapflights users on 4/24. 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.
Wed 8/127:10 am
SEA
- SJU
2 stops11h 50m
Southwest
Mon 8/175:00 am
SJU
- SEA
2 stops13h 00m
Southwest
Deal found 4/24![Southwest logo]()
$510
Best flights from Seattle to CaribbeanDiscover carefully curated flight deals from Seattle to Caribbean that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2026.
Discover carefully curated flight deals from Seattle to Caribbean that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2026.
This Southwest deal was found by Cheapflights users on 4/27. 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 9/125:40 pm
SEA
- SJU
2 stops12h 30m
Southwest
Sun 9/205:30 am
SJU
- SEA
1 stop12h 10m
Southwest
Deal found 4/27![Southwest logo]()
$454
This American Airlines deal was found by Cheapflights users on 4/26. 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.
Sun 5/1012:59 am
SEA
- STT
2 stops12h 16m
American Airlines
Fri 5/1511:27 am
STT
- SEA
1 stop12h 56m
American Airlines
Deal found 4/26![American Airlines logo]()
$465
This United Airlines deal was found by Cheapflights users on 4/27. 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 10/2411:04 pm
SEA
- STT
1 stop10h 52m
United Airlines
Fri 10/3012:02 pm
STT
- SEA
1 stop11h 08m
United Airlines
Deal found 4/27![United Airlines logo]()
$486
This Kissandfly.com deal was found by Cheapflights users on 4/25. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:15 pm
SEA
- SXM
2 stops16h 07m
Multiple Airlines
Sat 6/63:45 pm
SXM
- SEA
1 stop21h 20m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$545
This Delta deal was found by Cheapflights users on 4/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:00 am
SEA
- SJU
1 stop11h 45m
Delta
Mon 7/202:05 pm
SJU
- SEA
2 stops12h 54m
Delta
Deal found 4/24![Delta logo]()
$546
This Air Canada deal was found by Cheapflights users on 4/24. 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.
Wed 9/168:00 am
SEA
- PUJ
1 stop28h 30m
Air Canada
Sun 9/205:05 pm
PUJ
- SEA
2 stops32h 37m
Air Canada
Deal found 4/24![Air Canada logo]()
$673
This Copa Airlines deal was found by Cheapflights users on 4/28. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:51 pm
SEA
- CUR
2 stops16h 45m
Copa Airlines
Tue 11/37:31 pm
CUR
- SEA
2 stops27h 37m
Copa Airlines
Deal found 4/28![Copa Airlines logo]()
$674
This WestJet deal was found by Cheapflights users on 4/24. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:30 am
SEA
- KIN
2 stops26h 00m
WestJet
Tue 9/83:30 pm
KIN
- SEA
2 stops29h 15m
WestJet
Deal found 4/24![WestJet logo]()
$876
This United Airlines deal was found by Cheapflights users on 4/27. 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 9/1211:10 pm
SEA
- SJU
1 stop10h 44m
United Airlines
Tue 9/151:00 am
SJU
- SEA
1 stop13h 03m
United Airlines
Deal found 4/27![United Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 4/24. 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.
Sat 9/267:28 pm
SEA
- SJU
2 stops14h 06m
United Airlines
Wed 9/302:55 pm
SJU
- SEA
1 stop10h 45m
United Airlines
Deal found 4/24![United Airlines logo]()
$494
This Delta deal was found by Cheapflights users on 4/26. 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.
Tue 6/27:15 am
SEA
- SJU
1 stop13h 20m
Delta
Thu 6/1112:54 pm
SJU
- SEA
2 stops14h 05m
Delta
Deal found 4/26![Delta logo]()
$546
This American Airlines deal was found by Cheapflights users on 4/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:45 pm
SEA
- STT
1 stop12h 59m
American Airlines
Tue 6/21:34 pm
STT
- SEA
1 stop13h 34m
American Airlines
Deal found 4/24![American Airlines logo]()
$557
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/278:00 am
SEA
- SJU
1 stop10h 24m
United Airlines
Tue 6/21:00 am
SJU
- SEA
2 stops13h 38m
United Airlines
Deal found 4/27![United Airlines logo]()
$494
This Southwest deal was found by Cheapflights users on 4/28. 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 8/1212:40 pm
SEA
- NAS
2 stops20h 35m
Southwest
Wed 8/191:10 pm
NAS
- SEA
2 stops13h 25m
Southwest
Deal found 4/28![Southwest logo]()
$615
This American Airlines deal was found by Cheapflights users on 4/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1312:59 am
SEA
- MBJ
1 stop13h 15m
American Airlines
Wed 7/2212:47 pm
MBJ
- SEA
1 stop14h 10m
American Airlines
Deal found 4/24![American Airlines logo]()
$564
This Delta deal was found by Cheapflights users on 4/25. 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.
Sun 5/249:35 pm
SEA
- SXM
1 stop13h 16m
Delta
Sat 6/63:45 pm
SXM
- SEA
1 stop21h 20m
Delta
Deal found 4/25![Delta logo]()
$589
This Copa Airlines deal was found by Cheapflights users on 4/27. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:30 am
SEA
- CUR
2 stops31h 01m
Copa Airlines
Sun 8/27:31 pm
CUR
- SEA
2 stops29h 28m
Copa Airlines
Deal found 4/27![Copa Airlines logo]()
$691
This Southwest deal was found by Cheapflights users on 4/28. 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 10/12:15 pm
SEA
- SXM
2 stops20h 45m
Southwest
Thu 10/83:00 pm
SXM
- SEA
2 stops23h 25m
Southwest
Deal found 4/28![Southwest logo]()
$634
This United Airlines deal was found by Cheapflights users on 4/28. 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 10/267:10 pm
SEA
- STT
2 stops12h 50m
United Airlines
Fri 10/3012:02 pm
STT
- SEA
1 stop11h 08m
United Airlines
Deal found 4/28![United Airlines logo]()
$530
This American Airlines deal was found by Cheapflights users on 4/26. 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.
Mon 10/121:17 am
SEA
- MBJ
1 stop8h 49m
American Airlines
Mon 10/1912:47 pm
MBJ
- SEA
1 stop13h 28m
American Airlines
Deal found 4/26![American Airlines logo]()
$589
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
Sun 6/77:59 am
SEA
- KIN
1 stop31h 11m
Multiple Airlines
Wed 6/176:25 pm
KIN
- SEA
2 stops26h 20m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$742
This Delta deal was found by Cheapflights users on 4/28. 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 6/27:59 pm
SEA
- PUJ
2 stops13h 24m
Delta
Sat 6/62:23 pm
PUJ
- SEA
1 stop20h 32m
Delta
Deal found 4/28![Delta logo]()
$625
This Gotogate deal was found by Cheapflights users on 4/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/78:00 am
SEA
- KIN
1 stop27h 55m
Air Canada
Wed 6/173:05 pm
KIN
- SEA
1 stop32h 02m
Air Canada
Deal found 4/24![Air Canada logo]()
$769
This Southwest deal was found by Cheapflights users on 4/26. 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 7/207:20 pm
SEA
- SJU
2 stops13h 10m
Southwest
Sat 7/255:30 am
SJU
- SEA
1 stop16h 35m
Southwest
Deal found 4/26![Southwest logo]()
$636
This United Airlines deal was found by Cheapflights users on 4/28. 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 10/2411:59 pm
SEA
- STT
1 stop10h 31m
United Airlines
Wed 10/2812:02 pm
STT
- SEA
1 stop11h 08m
United Airlines
Deal found 4/28![United Airlines logo]()
$530
This Copa Airlines deal was found by Cheapflights users on 4/24. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:15 pm
SEA
- AUA
2 stops23h 28m
Copa Airlines
Thu 9/177:10 am
AUA
- SEA
2 stops17h 46m
Copa Airlines
Deal found 4/24![Copa Airlines logo]()
$717
This American Airlines deal was found by Cheapflights users on 4/29. 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 9/1311:09 pm
SEA
- SXM
1 stop11h 06m
American Airlines
Sat 9/192:40 pm
SXM
- SEA
2 stops21h 48m
American Airlines
Deal found 4/29![American Airlines logo]()
$602
This Delta deal was found by Cheapflights users on 4/29. 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 9/96:00 am
SEA
- SJU
1 stop13h 23m
Delta
Tue 9/157:30 am
SJU
- SEA
2 stops19h 31m
Delta
Deal found 4/29![Delta logo]()
$636
This Air Canada deal was found by Cheapflights users on 4/28. 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 6/18:00 am
SEA
- KIN
1 stop27h 55m
Air Canada
Wed 6/33:05 pm
KIN
- SEA
1 stop32h 03m
Air Canada
Deal found 4/28![Air Canada logo]()
$770
This Southwest deal was found by Cheapflights users on 4/29. 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 7/247:10 pm
SEA
- SJU
2 stops12h 20m
Southwest
Tue 7/289:50 am
SJU
- SEA
2 stops12h 45m
Southwest
Deal found 4/29![Southwest logo]()
$641
Last-minute flights from Seattle to CaribbeanDiscover last-minute flight deals from Seattle to Caribbean. Data last updated April 29, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Caribbean. Data last updated April 29, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Mon 5/45:25 pm
SEA
- STT
2 stops15h 55m
United Airlines
Sat 5/91:22 pm
STT
- SEA
1 stop12h 30m
United Airlines
Deal found 4/25![United Airlines logo]()
$478
This American Airlines deal was found by Cheapflights users on 4/28. 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 5/512:34 pm
SEA
- STT
1 stop21h 01m
American Airlines
Tue 5/125:05 pm
STT
- SEA
2 stops20h 36m
American Airlines
Deal found 4/28![American Airlines logo]()
$465
This American Airlines deal was found by Cheapflights users on 4/27. 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 5/612:59 am
SEA
- STT
2 stops12h 16m
American Airlines
Wed 5/2012:25 pm
STT
- SEA
2 stops15h 11m
American Airlines
Deal found 4/27![American Airlines logo]()
$537
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Sat 5/95:02 am
SEA
- SJU
1 stop9h 36m
United Airlines
Thu 5/147:20 am
SJU
- SEA
1 stop11h 22m
United Airlines
Deal found 4/25![United Airlines logo]()
$456
This American Airlines deal was found by Cheapflights users on 4/27. 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 5/1410:47 pm
SEA
- STT
1 stop10h 48m
American Airlines
Tue 5/195:05 pm
STT
- SEA
2 stops20h 36m
American Airlines
Deal found 4/27![American Airlines logo]()
$440
This Kissandfly.com deal was found by Cheapflights users on 4/25. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:15 pm
SEA
- SXM
2 stops16h 07m
Multiple Airlines
Sat 6/63:45 pm
SXM
- SEA
1 stop21h 20m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$545
This American Airlines deal was found by Cheapflights users on 4/28. 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 5/278:10 am
SEA
- SJU
1 stop11h 51m
American Airlines
Sat 6/66:21 am
SJU
- SEA
1 stop18h 14m
American Airlines
Deal found 4/28![American Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 4/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/288:00 am
SEA
- SJU
1 stop10h 24m
United Airlines
Tue 6/22:05 am
SJU
- SEA
1 stop11h 42m
United Airlines
Deal found 4/26![United Airlines logo]()
$545
This Gotogate deal was found by Cheapflights users on 4/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/288:00 am
SEA
- NAS
1 stop30h 30m
Air Canada
Wed 6/36:30 pm
NAS
- SEA
2 stops22h 50m
Air Canada
Deal found 4/28![Air Canada logo]()
$548
This American Airlines deal was found by Cheapflights users on 4/28. 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 5/295:10 am
SEA
- SJU
1 stop15h 29m
American Airlines
Tue 6/210:29 am
SJU
- SEA
1 stop16h 39m
American Airlines
Deal found 4/28![American Airlines logo]()
$494
This Delta deal was found by Cheapflights users on 4/28. 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 5/2911:05 pm
SEA
- SJU
1 stop11h 15m
Delta
Tue 6/22:35 pm
SJU
- SEA
2 stops12h 35m
Delta
Deal found 4/28![Delta logo]()
$546
This Expedia deal was found by Cheapflights users on 4/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:39 pm
SEA
- SJU
1 stop12h 55m
JetBlue
Tue 6/307:25 am
SJU
- SEA
1 stop16h 43m
JetBlue
Deal found 4/25![JetBlue logo]()
$549
One-way flights from Seattle to CaribbeanSearch for one-way flight options from Seattle to Caribbean. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
Search for one-way flight options from Seattle to Caribbean. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
This Delta deal was found by Cheapflights users on 4/25. 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.
Sat 8/155:30 pm
SEA
- SXM
1 stop17h 26m
Delta
Deal found 4/25![Delta logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 5/307:50 pm
SEA
- SJU
2 stops41h 00m
Frontier
Deal found 4/28![Frontier logo]()
$193
This Delta deal was found by Cheapflights users on 4/25. 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 8/123:55 pm
SEA
- SXM
1 stop19h 01m
Delta
Deal found 4/25![Delta logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 6/93:33 pm
SEA
- SJU
2 stops29h 42m
Frontier
Deal found 4/28![Frontier logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/117:50 pm
SEA
- SJU
2 stops42h 36m
Frontier
Deal found 4/27![Frontier logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/137:50 pm
SEA
- SJU
2 stops25h 07m
Frontier
Deal found 4/27![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:50 pm
SEA
- SJU
2 stops49h 07m
Frontier
Deal found 4/27![Frontier logo]()
$217
This Delta deal was found by Cheapflights users on 4/25. 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.
Tue 5/195:45 pm
SEA
- STT
2 stops15h 21m
Delta
Deal found 4/25![Delta logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 5/47:12 pm
SEA
- SJU
2 stops15h 55m
Frontier
Deal found 4/26![Frontier logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:39 pm
SEA
- SJU
1 stop10h 37m
JetBlue
Deal found 4/28![JetBlue logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 6/237:41 pm
SEA
- SJU
2 stops33h 14m
Frontier
Deal found 4/28![Frontier logo]()
$227
This Delta deal was found by Cheapflights users on 4/28. 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 5/166:00 am
SEA
- SJU
2 stops14h 35m
Delta
Deal found 4/28![Delta logo]()
$228
Find flight deals from Seattle to Caribbean
Keep the following information in mind while searching for Seattle to Caribbean flight deals. Data was last updated April 29, 2026.
Round-trip from | $440 (United Airlines) |
|---|---|
One-way from | $193 (Delta) |
Popular in | December |
Cheapest in | October |
Average price | $643 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle 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 29, 2026.
Use the filters below to find and compare flights from Seattle to Caribbean that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sat 9/12
5:40 pm-9:10 am
2 stops12h 30m
San Juan Luis Munoz Marin Intl
Sun 9/20
5:30 am-2:40 pm
1 stop12h 10m
$454
SeattleSaint Thomas Island
SEA - STT
SEASTT
Seattle/Tacoma Intl
Sun 5/10
12:59 am-4:15 pm
2 stops12h 16m
Saint Thomas Island Cyril E King
Fri 5/15
11:27 am-9:23 pm
1 stop12h 56m
$465
SeattleSaint Thomas Island
SEA - STT
SEASTT
Seattle/Tacoma Intl
Sat 10/24
11:04 pm-12:56 pm
1 stop10h 52m
Saint Thomas Island Cyril E King
Fri 10/30
12:02 pm-8:10 pm
1 stop11h 08m
$486
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sat 9/12
11:10 pm-12:54 pm
1 stop10h 44m
San Juan Luis Munoz Marin Intl
Tue 9/15
1:00 am-11:03 am
1 stop13h 03m
$494
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sat 9/26
7:28 pm-12:34 pm
2 stops14h 06m
San Juan Luis Munoz Marin Intl
Wed 9/30
2:55 pm-10:40 pm
1 stop10h 45m
$494
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Wed 5/27
8:00 am-9:24 pm
1 stop10h 24m
San Juan Luis Munoz Marin Intl
Tue 6/2
1:00 am-11:38 am
2 stops13h 38m
$494
SeattleSaint Thomas Island
SEA - STT
SEASTT
Seattle/Tacoma Intl
Mon 10/26
7:10 pm-11:00 am
2 stops12h 50m
Saint Thomas Island Cyril E King
Fri 10/30
12:02 pm-8:10 pm
1 stop11h 08m
$530
Quickest round-trip
SeattleSaint Thomas Island
SEA - STT
SEASTT
Seattle/Tacoma Intl
Sat 10/24
11:59 pm-1:30 pm
1 stop10h 31m
Saint Thomas Island Cyril E King
Wed 10/28
12:02 pm-8:10 pm
1 stop11h 08m
$530
SeattleSimpson Bay
SEA - SXM
SEASXM
Seattle/Tacoma Intl
Sun 5/24
6:15 pm-1:22 pm
2 stops16h 07m
Simpson Bay Princess Juliana
Sat 6/6
3:45 pm-10:05 am
1 stop21h 20m
$545
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Thu 7/9
6:00 am-8:45 pm
1 stop11h 45m
San Juan Luis Munoz Marin Intl
Mon 7/20
2:05 pm-11:59 pm
2 stops12h 54m
$546
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Seattle to Caribbean
Have a flexible travel schedule? Discover the best time to fly to Caribbean from Seattle with our price prediction graph.
SEA-SXM
SEA-STT
SEA-SJU
SEA-NAS
SEA-MBJ
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 Seattle to Caribbean
SEA-0CB
SEA-SXM
SEA-STT
SEA-SJU
SEA-NAS
How far ahead should I book a flight from Seattle to Caribbean?
Booking 89 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Caribbean. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Seattle to Caribbean?
Currently, May is the cheapest month in which you can book a flight from Seattle to Caribbean (average of $167). Flying from Seattle to Caribbean in April is currently the most expensive (average of $1,190). 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.
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 29, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Seattle to Caribbean have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Seattle to Caribbean. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Seattle 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 Seattle to Caribbean by cabin class
Find flights from Seattle to Caribbean, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Caribbean flights
Browse other Seattle and Caribbean flight options. Last updated on April 29, 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.
Seattle to Caribbean flights
Consider these flights traveling from Seattle to Caribbean.
Top 9 airlines flying from Seattle to Caribbean
Discover the top 9 airlines that operate flights from Seattle 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 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$175 | Average$344 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$214 | Average$649 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$278 | Average$605 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$282 | Average$509 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$349 | Average$762 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$364 | Average$693 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$454 | Average$828 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$496 | Average$676 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$587 | Average$727 | FlexibilityNo cancel fee | On-time75% |