$130+ Cheap flights from Seattle (SEA) to Caribbean Islands
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
May 2 — May 91
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Caribbean Islands with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Caribbean Islands
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Cheapest flights from Seattle to Caribbean IslandsExplore the most affordable flight options available from Seattle to Caribbean Islands. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2026.
Explore the most affordable flight options available from Seattle to Caribbean Islands. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2026.
This United Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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.
Fri 4/247:37 pm
SEA
- STT
2 stops18h 23m
United Airlines
Wed 5/62:10 pm
STT
- SEA
1 stop12h 49m
United Airlines
Deal found 3/30![United Airlines logo]()
$420
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/2612:59 am
SEA
- SJU
1 stop10h 43m
American Airlines
Mon 5/411:59 pm
SJU
- SEA
1 stop12h 36m
American Airlines
Deal found 3/29![American Airlines logo]()
$455
This eDestinos deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:42 pm
SEA
- SJU
2 stops27h 47m
Multiple Airlines
Thu 5/143:33 pm
SJU
- SEA
2 stops45h 16m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$456
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/2910:47 pm
SEA
- SJU
1 stop10h 48m
American Airlines
Wed 5/611:59 pm
SJU
- SEA
1 stop13h 49m
American Airlines
Deal found 3/31![American Airlines logo]()
$460
This Southwest deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/56:00 am
SEA
- SJU
2 stops12h 05m
Southwest
Tue 5/125:05 am
SJU
- SEA
2 stops16h 25m
Southwest
Deal found 3/31![Southwest logo]()
$465
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/155:00 am
SEA
- SJU
2 stops12h 38m
United Airlines
Thu 4/161:00 am
SJU
- SEA
1 stop12h 52m
United Airlines
Deal found 3/31![United Airlines logo]()
$468
This American Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 4/2910:47 pm
SEA
- SJU
1 stop10h 48m
American Airlines
Thu 5/146:45 am
SJU
- SEA
1 stop19h 13m
American Airlines
Deal found 3/30![American Airlines logo]()
$469
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 8/185:31 pm
SEA
- SJU
1 stop18h 31m
American Airlines
Tue 8/252:25 pm
SJU
- SEA
1 stop13h 36m
American Airlines
Deal found 3/31![American Airlines logo]()
$474
This eDestinos deal was found by Cheapflights users on 3/29. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:07 pm
SEA
- SJU
3 stops50h 54m
Multiple Airlines
Thu 4/231:42 pm
SJU
- SEA
1 stop23h 09m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$475
This United Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 4/207:00 am
SEA
- SJU
2 stops13h 50m
United Airlines
Fri 4/243:56 pm
SJU
- SEA
1 stop11h 38m
United Airlines
Deal found 3/30![United Airlines logo]()
$477
This American Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 8/127:40 am
SEA
- SJU
2 stops13h 00m
American Airlines
Mon 8/177:05 pm
SJU
- SEA
1 stop19h 56m
American Airlines
Deal found 3/30![American Airlines logo]()
$479
This Delta deal was found by Cheapflights users on 3/29. 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.
Mon 4/137:35 pm
SEA
- STT
2 stops14h 38m
Delta
Fri 4/171:59 pm
STT
- SEA
1 stop11h 06m
Delta
Deal found 3/29![Delta logo]()
$481
Best flights from Seattle to Caribbean IslandsDiscover carefully curated flight deals from Seattle to Caribbean Islands that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 2, 2026.
Discover carefully curated flight deals from Seattle to Caribbean Islands that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 2, 2026.
This United Airlines deal was found by Cheapflights users on 3/28. 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.
Sun 4/2610:55 pm
SEA
- STT
1 stop11h 13m
United Airlines
Wed 4/291:22 pm
STT
- SEA
1 stop13h 24m
United Airlines
Deal found 3/28![United Airlines logo]()
$510
This Southwest deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 8/1611:00 pm
SEA
- MBJ
2 stops10h 45m
Southwest
Thu 8/2712:15 pm
MBJ
- SEA
2 stops14h 05m
Southwest
Deal found 3/30![Southwest logo]()
$519
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 4/2511:15 pm
SEA
- KIN
1 stop18h 45m
Delta
Sun 5/39:00 am
KIN
- SEA
1 stop16h 53m
Delta
Deal found 3/30![Delta logo]()
$538
This American Airlines deal was found by Cheapflights users on 3/29. 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.
Thu 5/288:45 pm
SEA
- KIN
1 stop17h 23m
American Airlines
Tue 6/212:41 pm
KIN
- SEA
1 stop13h 27m
American Airlines
Deal found 3/29![American Airlines logo]()
$538
This Air Canada deal was found by Cheapflights users on 3/28. 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 4/278:00 am
SEA
- NAS
1 stop10h 00m
Air Canada
Wed 4/299:10 pm
NAS
- SEA
2 stops25h 10m
Air Canada
Deal found 3/28![Air Canada logo]()
$539
This JetBlue deal was found by Cheapflights users on 3/28. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2211:59 pm
SEA
- KIN
1 stop16h 35m
JetBlue
Sat 9/269:05 am
KIN
- SEA
1 stop15h 19m
JetBlue
Deal found 3/28![JetBlue logo]()
$565
This FlightHub deal was found by Cheapflights users on 3/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1411:39 pm
SEA
- SXM
1 stop12h 43m
Multiple Airlines
Thu 5/282:55 pm
SXM
- SEA
1 stop33h 13m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$622
This Copa Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:36 pm
SEA
- PUJ
2 stops17h 24m
Copa Airlines
Sat 5/95:54 pm
PUJ
- SEA
2 stops32h 35m
Copa Airlines
Deal found 4/2![Copa Airlines logo]()
$738
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2110:55 pm
SEA
- STT
1 stop11h 13m
United Airlines
Thu 4/232:10 pm
STT
- SEA
1 stop13h 24m
United Airlines
Deal found 4/1![United Airlines logo]()
$510
This Southwest deal was found by Cheapflights users on 3/29. 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.
Mon 4/2011:55 pm
SEA
- NAS
2 stops15h 35m
Southwest
Fri 4/242:10 pm
NAS
- SEA
2 stops12h 55m
Southwest
Deal found 3/29![Southwest logo]()
$519
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 4/267:25 am
SEA
- KIN
1 stop10h 35m
Delta
Sat 5/29:00 am
KIN
- SEA
1 stop15h 56m
Delta
Deal found 3/30![Delta logo]()
$538
This American Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 5/258:45 pm
SEA
- POP
1 stop15h 03m
American Airlines
Sun 5/313:44 pm
POP
- SEA
1 stop11h 24m
American Airlines
Deal found 3/30![American Airlines logo]()
$550
This United Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/710:41 pm
SEA
- MBJ
1 stop14h 29m
United Airlines
Wed 5/204:12 pm
MBJ
- SEA
2 stops17h 48m
United Airlines
Deal found 4/2![United Airlines logo]()
$515
This Southwest deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 4/276:15 pm
SEA
- SJU
2 stops13h 20m
Southwest
Mon 5/46:50 am
SJU
- SEA
2 stops15h 15m
Southwest
Deal found 3/30![Southwest logo]()
$520
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 4/286:00 am
SEA
- KIN
1 stop12h 00m
Delta
Mon 5/49:00 am
KIN
- SEA
1 stop15h 05m
Delta
Deal found 3/30![Delta logo]()
$538
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/32:36 pm
SEA
- SJU
2 stops11h 53m
United Airlines
Tue 6/93:56 pm
SJU
- SEA
1 stop11h 03m
United Airlines
Deal found 4/1![United Airlines logo]()
$523
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 4/267:25 am
SEA
- KIN
1 stop10h 35m
Delta
Mon 5/49:00 am
KIN
- SEA
1 stop15h 05m
Delta
Deal found 3/30![Delta logo]()
$538
This American Airlines deal was found by Cheapflights users on 3/28. 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 9/226:21 pm
SEA
- POP
2 stops14h 59m
American Airlines
Fri 10/21:45 pm
POP
- SEA
2 stops22h 35m
American Airlines
Deal found 3/28![American Airlines logo]()
$593
This Southwest deal was found by Cheapflights users on 3/28. 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.
Mon 4/276:15 pm
SEA
- NAS
2 stops16h 00m
Southwest
Mon 5/42:10 pm
NAS
- SEA
2 stops12h 55m
Southwest
Deal found 3/28![Southwest logo]()
$571
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/298:00 am
SEA
- SJU
1 stop10h 24m
United Airlines
Tue 5/51:00 am
SJU
- SEA
2 stops16h 36m
United Airlines
Deal found 4/1![United Airlines logo]()
$526
This Delta deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/2711:15 pm
SEA
- KIN
1 stop18h 45m
Delta
Fri 5/19:00 am
KIN
- SEA
1 stop11h 54m
Delta
Deal found 3/31![Delta logo]()
$564
This American Airlines deal was found by Cheapflights users on 3/28. 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 8/2111:55 pm
SEA
- POP
1 stop9h 35m
American Airlines
Sat 8/291:45 pm
POP
- SEA
2 stops22h 34m
American Airlines
Deal found 3/28![American Airlines logo]()
$627
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:00 am
SEA
- SJU
1 stop10h 34m
United Airlines
Wed 4/221:00 am
SJU
- SEA
1 stop13h 02m
United Airlines
Deal found 4/1![United Airlines logo]()
$526
This Southwest deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 5/286:15 pm
SEA
- MBJ
2 stops15h 00m
Southwest
Sat 6/63:00 pm
MBJ
- SEA
1 stop11h 05m
Southwest
Deal found 3/30![Southwest logo]()
$591
This Copa Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:30 am
SEA
- CUR
2 stops33h 01m
Copa Airlines
Mon 8/101:23 pm
CUR
- SEA
2 stops35h 33m
Copa Airlines
Deal found 4/2![Copa Airlines logo]()
$825
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 4/255:55 pm
SEA
- SJU
2 stops16h 30m
Delta
Sun 5/32:45 pm
SJU
- SEA
1 stop12h 08m
Delta
Deal found 3/30![Delta logo]()
$569
This American Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 4/2010:16 pm
SEA
- POP
1 stop13h 14m
American Airlines
Mon 5/43:30 pm
POP
- SEA
2 stops21h 44m
American Airlines
Deal found 3/30![American Airlines logo]()
$633
This United Airlines deal was found by Cheapflights users on 3/28. 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.
Tue 4/146:30 am
SEA
- SJU
2 stops14h 20m
United Airlines
Tue 4/217:00 am
SJU
- SEA
3 stops19h 27m
United Airlines
Deal found 3/28![United Airlines logo]()
$545
This Southwest deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:15 pm
SEA
- MBJ
2 stops15h 00m
Southwest
Wed 5/2012:15 pm
MBJ
- SEA
2 stops13h 20m
Southwest
Deal found 4/2![Southwest logo]()
$625
This Delta deal was found by Cheapflights users on 3/29. 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.
Sun 5/34:36 pm
SEA
- SJU
2 stops16h 36m
Delta
Sat 5/92:48 pm
SJU
- SEA
1 stop10h 08m
Delta
Deal found 3/29![Delta logo]()
$569
Last-minute flights from Seattle to Caribbean IslandsDiscover last-minute flight deals from Seattle to Caribbean Islands. Data last updated April 2, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Caribbean Islands. Data last updated April 2, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/29. 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.
Mon 4/139:45 pm
SEA
- STT
1 stop14h 03m
Delta
Fri 4/171:59 pm
STT
- SEA
1 stop11h 06m
Delta
Deal found 3/29![Delta logo]()
$481
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/155:00 am
SEA
- SJU
2 stops12h 38m
United Airlines
Thu 4/161:00 am
SJU
- SEA
1 stop12h 52m
United Airlines
Deal found 3/31![United Airlines logo]()
$468
This eDestinos deal was found by Cheapflights users on 3/29. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:07 pm
SEA
- SJU
3 stops50h 54m
Multiple Airlines
Thu 4/231:42 pm
SJU
- SEA
1 stop23h 09m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$475
This United Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 4/207:00 am
SEA
- SJU
2 stops13h 50m
United Airlines
Fri 4/243:56 pm
SJU
- SEA
1 stop11h 38m
United Airlines
Deal found 3/30![United Airlines logo]()
$477
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/215:45 pm
SEA
- MBJ
2 stops19h 25m
United Airlines
Wed 4/2912:52 pm
MBJ
- SEA
1 stop12h 54m
United Airlines
Deal found 3/31![United Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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.
Fri 4/247:37 pm
SEA
- STT
2 stops18h 23m
United Airlines
Wed 5/62:10 pm
STT
- SEA
1 stop12h 49m
United Airlines
Deal found 3/30![United Airlines logo]()
$420
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/2612:59 am
SEA
- SJU
1 stop10h 43m
American Airlines
Mon 5/411:59 pm
SJU
- SEA
1 stop12h 36m
American Airlines
Deal found 3/29![American Airlines logo]()
$455
This eDestinos deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2812:29 am
SEA
- SJU
2 stops45h 00m
Multiple Airlines
Wed 5/133:03 am
SJU
- SEA
3 stops57h 46m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$456
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/2910:47 pm
SEA
- SJU
1 stop10h 48m
American Airlines
Wed 5/611:59 pm
SJU
- SEA
1 stop13h 49m
American Airlines
Deal found 3/31![American Airlines logo]()
$460
This American Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 4/2910:47 pm
SEA
- SJU
1 stop10h 48m
American Airlines
Thu 5/146:45 am
SJU
- SEA
1 stop19h 13m
American Airlines
Deal found 3/30![American Airlines logo]()
$469
This Southwest deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/56:00 am
SEA
- SJU
2 stops12h 05m
Southwest
Tue 5/125:05 am
SJU
- SEA
2 stops16h 25m
Southwest
Deal found 3/31![Southwest logo]()
$465
This Delta deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:30 am
SEA
- SJU
2 stops13h 47m
Delta
Wed 6/32:35 pm
SJU
- SEA
1 stop11h 11m
Delta
Deal found 4/2![Delta logo]()
$474
One-way flights from Seattle to Caribbean IslandsSearch for one-way flight options from Seattle to Caribbean Islands. Find affordable one-way fares based on user searches. Data last updated April 2, 2026.
Search for one-way flight options from Seattle to Caribbean Islands. Find affordable one-way fares based on user searches. Data last updated April 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/2510:57 am
SEA
- SJU
2 stops19h 51m
Frontier
Deal found 3/31![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/27:12 pm
SEA
- SJU
2 stops35h 42m
Frontier
Deal found 3/31![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/147:12 pm
SEA
- SJU
2 stops38h 38m
Frontier
Deal found 3/31![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/17:12 pm
SEA
- SJU
2 stops36h 27m
Frontier
Deal found 3/31![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/911:03 am
SEA
- SJU
2 stops24h 12m
Frontier
Deal found 4/1![Frontier logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:12 pm
SEA
- SJU
3 stops27h 54m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$197
This United Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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.
Fri 5/111:59 pm
SEA
- STT
1 stop12h 44m
United Airlines
Deal found 3/30![United Airlines logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/147:12 pm
SEA
- SJU
3 stops25h 12m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:07 pm
SEA
- SJU
2 stops48h 22m
Frontier
Deal found 3/29![Frontier logo]()
$215
This Trip.com deal was found by Cheapflights users on 3/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/244:20 pm
SEA
- NAS
2 stops15h 40m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” 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 5/17:12 pm
SEA
- SJU
3 stops21h 10m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/25:55 pm
SEA
- SJU
2 stops15h 17m
Delta
Deal found 3/31![Delta logo]()
$218
Find flight deals from Seattle to Caribbean Islands
Keep the following information in mind while searching for Seattle to Caribbean Islands flight deals. Data was last updated April 2, 2026.
Round-trip from | $420 (United Airlines) |
|---|---|
One-way from | $130 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $632 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Caribbean Islands that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 2, 2026.
Use the filters below to find and compare flights from Seattle to Caribbean Islands that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleSaint Thomas Island
SEA - STT
SEASTT
Seattle/Tacoma Intl
Sun 4/26
10:55 pm-1:08 pm
1 stop11h 13m
Saint Thomas Island Cyril E King
Wed 4/29
1:22 pm-11:46 pm
1 stop13h 24m
$510
SeattleSaint Thomas Island
SEA - STT
SEASTT
Seattle/Tacoma Intl
Tue 4/21
10:55 pm-1:08 pm
1 stop11h 13m
Saint Thomas Island Cyril E King
Thu 4/23
2:10 pm-12:34 am
1 stop13h 24m
$510
SeattleMontego Bay
SEA - MBJ
SEAMBJ
Seattle/Tacoma Intl
Thu 5/7
10:41 pm-3:10 pm
1 stop14h 29m
Montego Bay Sangster Intl
Wed 5/20
4:12 pm-8:00 am
2 stops17h 48m
$515
SeattleMontego Bay
SEA - MBJ
SEAMBJ
Seattle/Tacoma Intl
Sun 8/16
11:00 pm-11:45 am
2 stops10h 45m
Montego Bay Sangster Intl
Thu 8/27
12:15 pm-12:20 am
2 stops14h 05m
$519
SeattleNassau
SEA - NAS
SEANAS
Seattle/Tacoma Intl
Mon 4/20
11:55 pm-6:30 pm
2 stops15h 35m
Nassau Intl
Fri 4/24
2:10 pm-12:05 am
2 stops12h 55m
$519
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 4/27
6:15 pm-10:35 am
2 stops13h 20m
San Juan Luis Munoz Marin Intl
Mon 5/4
6:50 am-7:05 pm
2 stops15h 15m
$520
Quickest round-trip
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Wed 6/3
2:36 pm-5:29 am
2 stops11h 53m
San Juan Luis Munoz Marin Intl
Tue 6/9
3:56 pm-11:59 pm
1 stop11h 03m
$523
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Wed 4/29
8:00 am-9:24 pm
1 stop10h 24m
San Juan Luis Munoz Marin Intl
Tue 5/5
1:00 am-2:36 pm
2 stops16h 36m
$526
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sun 4/19
7:00 am-8:34 pm
1 stop10h 34m
San Juan Luis Munoz Marin Intl
Wed 4/22
1:00 am-11:02 am
1 stop13h 02m
$526
SeattleKingston
SEA - KIN
SEAKIN
Seattle/Tacoma Intl
Sat 4/25
11:15 pm-8:00 pm
1 stop18h 45m
Kingston Norman Manley
Sun 5/3
9:00 am-11:53 pm
1 stop16h 53m
$538
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Seattle to Caribbean Islands
Have a flexible travel schedule? Discover the best time to fly to Caribbean Islands from Seattle with our price prediction graph.
SEA-STT
SEA-NAS
SEA-SXM
SEA-PUJ
SEA-KIN
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 Islands
SEA-zzEPX
SEA-STT
SEA-NAS
SEA-SXM
SEA-PUJ
What is the cheapest month to book a flight from Seattle to Caribbean Islands?
Currently, January is the cheapest month in which you can book a flight from Seattle to Caribbean Islands (average of $215). Flying from Seattle to Caribbean Islands in July is currently the most expensive (average of $420). 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 Islands
Get insights into the airlines that provide service to Caribbean Islands. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Caribbean Islands. Reviews last updated April 2, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Seattle to Caribbean Islands to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
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 Islands. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to Caribbean Islands
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Caribbean Islands by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Caribbean Islands by cabin class
Find flights from Seattle to Caribbean Islands, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Caribbean Islands flights
Browse other Seattle and Caribbean Islands flight options. Last updated on April 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Seattle to Caribbean Islands flights
Consider these flights traveling from Seattle to Caribbean Islands.
Top 9 airlines flying from Seattle to Caribbean Islands
Discover the top 9 airlines that operate flights from Seattle to Caribbean Islands. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$175 | Average$344 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$206 | Average$684 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$292 | Average$600 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$327 | Average$505 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$349 | Average$762 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$363 | Average$690 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$454 | Average$828 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$521 | Average$683 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$587 | Average$804 | FlexibilityNo cancel fee | On-time75% |