$134+ 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Mar 8 — Mar 151
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Caribbean Islands
Cheapest
Best
Last-minute
One-way
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 February 6, 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 February 6, 2026.
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/211:57 pm
SEA
- SJU
1 stop11h 14m
American Airlines
Tue 3/35:25 pm
SJU
- SEA
1 stop10h 59m
American Airlines
Deal found 2/2![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2811:57 pm
SEA
- SJU
1 stop19h 34m
American Airlines
Tue 3/102:40 pm
SJU
- SEA
1 stop11h 24m
American Airlines
Deal found 2/3![American Airlines logo]()
$384
This Trip.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2312:30 pm
SEA
- STT
2 stops22h 01m
Multiple Airlines
Wed 3/43:36 pm
STT
- SEA
2 stops24h 25m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$385
This United Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2711:59 pm
SEA
- MBJ
2 stops13h 11m
United Airlines
Tue 5/52:40 pm
MBJ
- SEA
2 stops22h 03m
United Airlines
Deal found 2/4![United Airlines logo]()
$415
This Southwest deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:15 pm
SEA
- SJU
2 stops13h 20m
Southwest
Tue 5/55:05 am
SJU
- SEA
2 stops16h 25m
Southwest
Deal found 2/4![Southwest logo]()
$416
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/237:00 am
SEA
- SJU
1 stop10h 00m
United Airlines
Mon 2/232:05 am
SJU
- SEA
1 stop13h 09m
United Airlines
Deal found 2/2![United Airlines logo]()
$417
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:05 am
SEA
- SJU
1 stop9h 33m
United Airlines
Mon 5/113:56 pm
SJU
- SEA
1 stop11h 01m
United Airlines
Deal found 2/3![United Airlines logo]()
$418
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/712:07 am
SEA
- MBJ
1 stop9h 04m
American Airlines
Thu 3/1212:28 pm
MBJ
- SEA
1 stop10h 40m
American Airlines
Deal found 2/3![American Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:30 am
SEA
- SJU
1 stop13h 20m
United Airlines
Mon 6/13:56 pm
SJU
- SEA
1 stop11h 03m
United Airlines
Deal found 2/5![United Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:00 am
SEA
- SJU
2 stops12h 34m
United Airlines
Fri 5/11:00 am
SJU
- SEA
2 stops13h 39m
United Airlines
Deal found 2/2![United Airlines logo]()
$424
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1710:08 pm
SEA
- PLS
1 stop10h 57m
American Airlines
Fri 2/2011:14 am
PLS
- SEA
2 stops16h 41m
American Airlines
Deal found 2/3![American Airlines logo]()
$426
This United Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:59 pm
SEA
- MBJ
1 stop10h 47m
United Airlines
Sun 3/81:48 pm
MBJ
- SEA
1 stop10h 57m
United Airlines
Deal found 2/4![United Airlines logo]()
$431
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 February 6, 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 February 6, 2026.
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2311:59 pm
SEA
- SJU
1 stop11h 16m
Delta
Wed 4/221:25 pm
SJU
- SEA
1 stop12h 06m
Delta
Deal found 2/3![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2711:05 pm
SEA
- MBJ
1 stop10h 38m
United Airlines
Tue 5/52:40 pm
MBJ
- SEA
2 stops22h 03m
United Airlines
Deal found 2/4![United Airlines logo]()
$415
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/712:07 am
SEA
- MBJ
1 stop9h 04m
American Airlines
Thu 3/1212:28 pm
MBJ
- SEA
1 stop10h 40m
American Airlines
Deal found 2/3![American Airlines logo]()
$420
This Gotogate deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/288:00 am
SEA
- BGI
1 stop26h 45m
Air Canada
Mon 4/133:15 pm
BGI
- SEA
2 stops26h 48m
Air Canada
Deal found 2/4![Air Canada logo]()
$527
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:43 pm
SEA
- KIN
1 stop10h 52m
Multiple Airlines
Wed 4/1512:00 pm
KIN
- SEA
1 stop11h 44m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$655
This Mytrip deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” 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.
Mon 3/233:10 pm
SEA
- KIN
3 stops22h 14m
WestJet
Mon 3/303:30 pm
KIN
- SEA
2 stops24h 49m
WestJet
Deal found 2/6![WestJet logo]()
$682
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:55 pm
SEA
- SJU
2 stops15h 17m
Delta
Sat 5/27:15 am
SJU
- SEA
1 stop15h 44m
Delta
Deal found 2/2![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/237:00 am
SEA
- SJU
1 stop10h 00m
United Airlines
Mon 2/232:05 am
SJU
- SEA
1 stop13h 09m
United Airlines
Deal found 2/2![United Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:00 am
SEA
- SJU
2 stops14h 15m
Delta
Wed 4/221:25 pm
SJU
- SEA
1 stop12h 06m
Delta
Deal found 2/3![Delta logo]()
$384
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1612:13 am
SEA
- MBJ
2 stops11h 05m
American Airlines
Tue 3/2410:07 am
MBJ
- SEA
2 stops14h 57m
American Airlines
Deal found 2/3![American Airlines logo]()
$425
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:05 am
SEA
- SJU
2 stops12h 33m
United Airlines
Mon 5/113:56 pm
SJU
- SEA
1 stop11h 01m
United Airlines
Deal found 2/3![United Airlines logo]()
$418
This American Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/211:44 pm
SEA
- PLS
1 stop17h 30m
American Airlines
Wed 2/253:25 pm
PLS
- SEA
1 stop11h 15m
American Airlines
Deal found 2/5![American Airlines logo]()
$450
This United Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:59 pm
SEA
- MBJ
1 stop10h 47m
United Airlines
Wed 3/112:20 pm
MBJ
- SEA
1 stop10h 39m
United Airlines
Deal found 2/4![United Airlines logo]()
$420
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1710:35 pm
SEA
- AUA
1 stop10h 59m
Delta
Tue 5/191:55 pm
AUA
- SEA
2 stops25h 40m
Delta
Deal found 2/2![Delta logo]()
$439
This Air Canada deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/255:40 am
SEA
- GND
2 stops29h 50m
Air Canada
Thu 4/93:30 pm
GND
- SEA
2 stops30h 48m
Air Canada
Deal found 2/5![Air Canada logo]()
$543
This American Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2310:08 pm
SEA
- PLS
1 stop13h 22m
American Airlines
Mon 3/23:25 pm
PLS
- SEA
1 stop11h 15m
American Airlines
Deal found 2/5![American Airlines logo]()
$475
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/2211:15 pm
SEA
- NAS
1 stop10h 11m
Delta
Fri 2/271:15 pm
NAS
- SEA
2 stops13h 54m
Delta
Deal found 2/3![Delta logo]()
$450
This United Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/207:10 pm
SEA
- PLS
2 stops17h 42m
United Airlines
Thu 2/262:30 pm
PLS
- SEA
1 stop12h 21m
United Airlines
Deal found 2/5![United Airlines logo]()
$451
This Mytrip deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/711:15 am
SEA
- BGI
1 stop25h 05m
Air Canada
Thu 5/144:20 pm
BGI
- SEA
1 stop21h 00m
Air Canada
Deal found 2/5![Air Canada logo]()
$563
This American Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2812:07 am
SEA
- PLS
2 stops11h 23m
American Airlines
Tue 3/101:05 pm
PLS
- SEA
2 stops12h 59m
American Airlines
Deal found 2/4![American Airlines logo]()
$479
This Kiwi.com deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2310:43 pm
SEA
- KIN
1 stop10h 52m
Multiple Airlines
Mon 3/303:30 pm
KIN
- SEA
1 stop29h 55m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$658
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:00 am
SEA
- SJU
2 stops14h 15m
Delta
Fri 4/242:03 pm
SJU
- SEA
1 stop10h 47m
Delta
Deal found 2/3![Delta logo]()
$450
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:30 am
SEA
- SJU
1 stop11h 08m
United Airlines
Sat 4/257:20 am
SJU
- SEA
2 stops14h 26m
United Airlines
Deal found 2/3![United Airlines logo]()
$452
This Orbitz deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/255:40 am
SEA
- BGI
2 stops29h 45m
Air Canada
Tue 3/313:15 pm
BGI
- SEA
1 stop33h 38m
Air Canada
Deal found 2/5![Air Canada logo]()
$574
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/145:00 pm
SEA
- PUJ
1 stop20h 25m
American Airlines
Wed 4/293:34 pm
PUJ
- SEA
1 stop12h 10m
American Airlines
Deal found 2/2![American Airlines logo]()
$479
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2311:59 pm
SEA
- SJU
1 stop11h 16m
Delta
Fri 4/242:03 pm
SJU
- SEA
1 stop10h 47m
Delta
Deal found 2/3![Delta logo]()
$450
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2911:59 pm
SEA
- NAS
1 stop11h 58m
United Airlines
Mon 5/43:59 pm
NAS
- SEA
1 stop9h 43m
United Airlines
Deal found 2/2![United Airlines logo]()
$463
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/117:51 pm
SEA
- KIN
2 stops13h 44m
Multiple Airlines
Mon 4/2012:00 pm
KIN
- SEA
1 stop24h 51m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$689
This American Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1812:59 am
SEA
- PUJ
1 stop12h 26m
American Airlines
Thu 4/233:34 pm
PUJ
- SEA
1 stop12h 10m
American Airlines
Deal found 2/4![American Airlines logo]()
$479
This Expedia deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1711:15 am
SEA
- BGI
1 stop25h 05m
Air Canada
Sat 5/234:20 pm
BGI
- SEA
1 stop21h 00m
Air Canada
Deal found 2/5![Air Canada logo]()
$580
Last-minute flights from Seattle to Caribbean IslandsDiscover last-minute flight deals from Seattle to Caribbean Islands. Data last updated February 6, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Caribbean Islands. Data last updated February 6, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1710:08 pm
SEA
- PLS
1 stop10h 57m
American Airlines
Fri 2/2011:14 am
PLS
- SEA
2 stops16h 41m
American Airlines
Deal found 2/3![American Airlines logo]()
$426
This Trip.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2312:30 pm
SEA
- STT
2 stops22h 01m
Multiple Airlines
Wed 3/43:36 pm
STT
- SEA
2 stops24h 25m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$385
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/237:00 am
SEA
- SJU
1 stop10h 00m
United Airlines
Mon 2/232:05 am
SJU
- SEA
1 stop13h 09m
United Airlines
Deal found 2/2![United Airlines logo]()
$417
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2711:57 pm
SEA
- MBJ
1 stop11h 56m
American Airlines
Sat 3/73:53 pm
MBJ
- SEA
1 stop10h 14m
American Airlines
Deal found 2/3![American Airlines logo]()
$442
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2811:57 pm
SEA
- SJU
1 stop19h 34m
American Airlines
Tue 3/102:40 pm
SJU
- SEA
1 stop11h 24m
American Airlines
Deal found 2/3![American Airlines logo]()
$384
This American Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2812:07 am
SEA
- PLS
1 stop10h 17m
American Airlines
Tue 3/101:20 pm
PLS
- SEA
1 stop13h 20m
American Airlines
Deal found 2/4![American Airlines logo]()
$441
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:13 pm
SEA
- SJU
2 stops11h 47m
American Airlines
Tue 3/35:25 pm
SJU
- SEA
1 stop10h 59m
American Airlines
Deal found 2/2![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:07 am
SEA
- MBJ
1 stop10h 19m
American Airlines
Sun 3/83:04 pm
MBJ
- SEA
1 stop11h 51m
American Airlines
Deal found 2/3![American Airlines logo]()
$436
This United Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:59 pm
SEA
- MBJ
1 stop10h 47m
United Airlines
Sun 3/81:48 pm
MBJ
- SEA
1 stop10h 57m
United Airlines
Deal found 2/4![United Airlines logo]()
$431
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/712:07 am
SEA
- MBJ
1 stop9h 04m
American Airlines
Thu 3/1212:28 pm
MBJ
- SEA
1 stop10h 40m
American Airlines
Deal found 2/3![American Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/911:59 pm
SEA
- SJU
1 stop10h 41m
United Airlines
Thu 3/121:05 am
SJU
- SEA
1 stop13h 05m
United Airlines
Deal found 2/3![United Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:45 am
SEA
- SJU
1 stop10h 41m
United Airlines
Tue 4/217:20 am
SJU
- SEA
2 stops14h 40m
United Airlines
Deal found 2/3![United Airlines logo]()
$444
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 February 6, 2026.
Search for one-way flight options from Seattle to Caribbean Islands. Find affordable one-way fares based on user searches. Data last updated February 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2712:00 pm
SEA
- SJU
2 stops34h 53m
Frontier
Deal found 2/5![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/281:16 pm
SEA
- SJU
2 stops33h 37m
Frontier
Deal found 2/3![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:33 pm
SEA
- SJU
3 stops19h 25m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:57 pm
SEA
- SJU
2 stops40h 11m
Frontier
Deal found 2/5![Frontier logo]()
$150
This Trip.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/261:16 pm
SEA
- SJU
2 stops18h 11m
Frontier
Deal found 2/5![Frontier logo]()
$158
This Trip.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:14 pm
SEA
- SJU
3 stops17h 44m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1012:42 pm
SEA
- SJU
2 stops29h 07m
Frontier
Deal found 2/5![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/51:16 pm
SEA
- SJU
2 stops33h 42m
Frontier
Deal found 2/5![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/169:36 pm
SEA
- SJU
3 stops47h 22m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$174
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1311:55 pm
SEA
- NAS
2 stops11h 51m
American Airlines
Deal found 2/3![American Airlines logo]()
$185
This United Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:59 pm
SEA
- MBJ
1 stop10h 47m
United Airlines
Deal found 2/4![United Airlines logo]()
$186
This Delta deal was found by Cheapflights users on 2/6. Clicking the “Pick Dates” 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 2/194:05 pm
SEA
- PLS
1 stop17h 40m
Delta
Deal found 2/6![Delta logo]()
$196
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 February 6, 2026.
Round-trip from | $379 (American Airlines) |
|---|---|
One-way from | $134 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $535 |
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 February 6, 2026.
Use the filters below to find and compare flights from Seattle to Caribbean Islands that are best for you.
Fly from
Seattle
Fly to
Caribbean Islands
Route
Depart
Return
Price
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 3/23
11:59 pm-2:15 pm
1 stop11h 16m
San Juan Luis Munoz Marin Intl
Wed 4/22
1:25 pm-10:31 pm
1 stop12h 06m
$384
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sat 4/25
5:55 pm-12:12 pm
2 stops15h 17m
San Juan Luis Munoz Marin Intl
Sat 5/2
7:15 am-7:59 pm
1 stop15h 44m
$384
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Tue 3/24
6:00 am-11:15 pm
2 stops14h 15m
San Juan Luis Munoz Marin Intl
Wed 4/22
1:25 pm-10:31 pm
1 stop12h 06m
$384
SeattleMontego Bay
SEA - MBJ
SEAMBJ
Seattle/Tacoma Intl
Mon 4/27
11:05 pm-11:43 am
1 stop10h 38m
Montego Bay Sangster Intl
Tue 5/5
2:40 pm-10:43 am
2 stops22h 03m
$415
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 2/23
7:00 am-9:00 pm
1 stop10h 00m
San Juan Luis Munoz Marin Intl
Mon 2/23
2:05 am-11:14 am
1 stop13h 09m
$417
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Tue 5/5
5:05 am-8:38 pm
2 stops12h 33m
San Juan Luis Munoz Marin Intl
Mon 5/11
3:56 pm-11:57 pm
1 stop11h 01m
$418
SeattleMontego Bay
SEA - MBJ
SEAMBJ
Seattle/Tacoma Intl
Sat 3/7
12:07 am-12:11 pm
1 stop9h 04m
Montego Bay Sangster Intl
Thu 3/12
12:28 pm-9:08 pm
1 stop10h 40m
$420
SeattleMontego Bay
SEA - MBJ
SEAMBJ
Seattle/Tacoma Intl
Wed 3/4
11:59 pm-1:46 pm
1 stop10h 47m
Montego Bay Sangster Intl
Wed 3/11
2:20 pm-10:59 pm
1 stop10h 39m
$420
SeattleMontego Bay
SEA - MBJ
SEAMBJ
Seattle/Tacoma Intl
Mon 3/16
12:13 am-1:18 pm
2 stops11h 05m
Montego Bay Sangster Intl
Tue 3/24
10:07 am-11:04 pm
2 stops14h 57m
$425
SeattleOranjestad
SEA - AUA
SEAAUA
Seattle/Tacoma Intl
Sun 5/17
10:35 pm-12:34 pm
1 stop10h 59m
Oranjestad Reina Beatrix
Tue 5/19
1:55 pm-12:35 pm
2 stops25h 40m
$439
Showing 1-10 of 60 results
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-SJU
SEA-STT
SEA-MBJ
SEA-PLS
SEA-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 Seattle to Caribbean Islands
SEA-zzEPX
SEA-SJU
SEA-STT
SEA-MBJ
SEA-PLS
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 $477). 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 February 6, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and United 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.
Food
7.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from 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.
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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
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 February 6, 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 10 airlines flying from Seattle to Caribbean Islands
Discover the top 10 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 February 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$175 | Average$344 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$191 | Average$341 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$216 | Average$659 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$268 | Average$606 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$282 | Average$529 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$340 | Average$708 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$363 | Average$694 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$368 | Average$762 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$454 | Average$810 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$521 | Average$753 | FlexibilityNo cancel fee | On-time63% |