$151+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
May 12 — May 191
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Seattle to Caribbean with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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
Cheapest
Best
Last-minute
One-way
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 12, 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 12, 2026.
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/66:19 pm
SEA
- STT
2 stops14h 16m
American Airlines
Wed 5/131:15 pm
STT
- SEA
2 stops14h 21m
American Airlines
Deal found 4/7![American Airlines logo]()
$425
This FlightHub deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/711:06 am
SEA
- MBJ
2 stops23h 05m
Frontier
Thu 5/141:16 pm
MBJ
- SEA
2 stops22h 33m
Frontier
Deal found 4/8![Frontier logo]()
$435
This Delta deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/54:36 pm
SEA
- STT
2 stops18h 15m
Delta
Thu 5/141:16 pm
STT
- SEA
1 stop13h 43m
Delta
Deal found 4/8![Delta logo]()
$440
This United Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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
- STT
2 stops18h 46m
United Airlines
Thu 4/301:22 pm
STT
- SEA
1 stop12h 30m
United Airlines
Deal found 4/8![United Airlines logo]()
$465
This Delta deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 11/79:20 pm
SEA
- SJU
1 stop11h 16m
Delta
Thu 11/123:35 pm
SJU
- SEA
1 stop12h 34m
Delta
Deal found 4/7![Delta logo]()
$474
This United Airlines deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” 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 10/2310:10 pm
SEA
- STT
1 stop11h 51m
United Airlines
Sun 11/13:35 pm
STT
- SEA
1 stop11h 03m
United Airlines
Deal found 4/12![United Airlines logo]()
$474
This American Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 4/276:19 pm
SEA
- SJU
2 stops11h 54m
American Airlines
Mon 5/411:59 pm
SJU
- SEA
1 stop12h 36m
American Airlines
Deal found 4/8![American Airlines logo]()
$475
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/62:10 pm
SEA
- SJU
1 stop11h 22m
American Airlines
Wed 5/131:31 pm
SJU
- SEA
1 stop13h 13m
American Airlines
Deal found 4/7![American Airlines logo]()
$479
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/295:00 pm
SEA
- SJU
1 stop18h 42m
American Airlines
Tue 5/510:03 am
SJU
- SEA
2 stops14h 19m
American Airlines
Deal found 4/7![American Airlines logo]()
$480
This United Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 10/305:07 am
SEA
- SJU
1 stop9h 18m
United Airlines
Fri 10/301:05 am
SJU
- SEA
2 stops15h 15m
United Airlines
Deal found 4/10![United Airlines logo]()
$489
This American Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 4/1610:47 pm
SEA
- STT
1 stop10h 48m
American Airlines
Mon 4/2012:25 pm
STT
- SEA
1 stop14h 19m
American Airlines
Deal found 4/9![American Airlines logo]()
$490
This American Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 8/2011:55 pm
SEA
- SXM
1 stop10h 32m
American Airlines
Sun 8/232:22 pm
SXM
- SEA
2 stops21h 57m
American Airlines
Deal found 4/10![American Airlines logo]()
$491
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 12, 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 12, 2026.
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/66:19 pm
SEA
- STT
2 stops14h 16m
American Airlines
Wed 5/131:15 pm
STT
- SEA
2 stops14h 21m
American Airlines
Deal found 4/7![American Airlines logo]()
$425
This Delta deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/77:59 pm
SEA
- STT
2 stops13h 07m
Delta
Thu 5/143:01 pm
STT
- SEA
1 stop11h 58m
Delta
Deal found 4/7![Delta logo]()
$440
This Southwest deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/186:15 pm
SEA
- SJU
2 stops13h 20m
Southwest
Sat 5/235:15 am
SJU
- SEA
2 stops20h 45m
Southwest
Deal found 4/8![Southwest logo]()
$514
This United Airlines deal was found by Cheapflights users on 4/11. Clicking the “Pick Dates” 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 5/2610:40 pm
SEA
- SXM
2 stops13h 03m
United Airlines
Tue 6/21:35 pm
SXM
- SEA
2 stops21h 21m
United Airlines
Deal found 4/11![United Airlines logo]()
$526
This Air Canada deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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.
Tue 5/52:55 pm
SEA
- NAS
2 stops23h 35m
Air Canada
Thu 5/76:30 pm
NAS
- SEA
1 stop29h 38m
Air Canada
Deal found 4/10![Air Canada logo]()
$545
This BusinessClass deal was found by Cheapflights users on 4/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/207:05 pm
SEA
- CUR
2 stops38h 13m
Copa Airlines
Tue 6/303:39 pm
CUR
- SEA
2 stops30h 24m
Copa Airlines
Deal found 4/11![Copa Airlines logo]()
$767
This Justfly.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2210:28 pm
SEA
- BGI
1 stop14h 27m
JetBlue
Sun 7/55:05 pm
BGI
- SEA
1 stop30h 59m
JetBlue
Deal found 4/8![JetBlue logo]()
$806
This Delta deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/610:40 pm
SEA
- STT
1 stop10h 26m
Delta
Wed 5/133:01 pm
STT
- SEA
1 stop11h 58m
Delta
Deal found 4/8![Delta logo]()
$440
This United Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/311:59 pm
SEA
- STT
1 stop12h 44m
United Airlines
Wed 5/131:22 pm
STT
- SEA
1 stop12h 30m
United Airlines
Deal found 4/8![United Airlines logo]()
$530
This Southwest deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 8/166:50 pm
SEA
- SJU
2 stops13h 05m
Southwest
Mon 8/245:30 am
SJU
- SEA
1 stop12h 30m
Southwest
Deal found 4/10![Southwest logo]()
$534
This Expedia deal was found by Cheapflights users on 4/11. Clicking the “Pick Dates” 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.
Thu 5/288:00 am
SEA
- NAS
1 stop30h 30m
Air Canada
Sun 6/76:30 pm
NAS
- SEA
1 stop29h 38m
Air Canada
Deal found 4/11![Air Canada logo]()
$560
This United Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/910:41 pm
SEA
- STT
1 stop10h 39m
United Airlines
Tue 5/121:22 pm
STT
- SEA
1 stop12h 30m
United Airlines
Deal found 4/8![United Airlines logo]()
$530
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1811:05 pm
SEA
- MBJ
2 stops11h 20m
Southwest
Sat 9/2612:20 pm
MBJ
- SEA
2 stops12h 35m
Southwest
Deal found 4/7![Southwest logo]()
$539
This American Airlines deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” 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 9/135:31 pm
SEA
- SXM
2 stops16h 44m
American Airlines
Sat 9/192:50 pm
SXM
- SEA
2 stops21h 30m
American Airlines
Deal found 4/12![American Airlines logo]()
$602
This Delta deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/187:30 am
SEA
- SJU
1 stop10h 00m
Delta
Sat 5/237:30 am
SJU
- SEA
2 stops16h 13m
Delta
Deal found 4/8![Delta logo]()
$581
This United Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/47:36 pm
SEA
- STT
2 stops14h 32m
United Airlines
Thu 5/71:22 pm
STT
- SEA
1 stop12h 30m
United Airlines
Deal found 4/10![United Airlines logo]()
$530
This Air Canada deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Thu 6/1110:45 am
SEA
- NAS
2 stops27h 45m
Air Canada
Mon 6/156:30 pm
NAS
- SEA
2 stops27h 03m
Air Canada
Deal found 4/7![Air Canada logo]()
$587
This Southwest deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” 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 9/911:05 pm
SEA
- MBJ
2 stops12h 10m
Southwest
Wed 9/2311:50 am
MBJ
- SEA
2 stops13h 15m
Southwest
Deal found 4/12![Southwest logo]()
$539
This American Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/910:29 pm
SEA
- SXM
2 stops11h 51m
American Airlines
Mon 5/114:35 pm
SXM
- SEA
2 stops21h 53m
American Airlines
Deal found 4/8![American Airlines logo]()
$602
This Delta deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 4/267:35 pm
SEA
- AUA
2 stops14h 05m
Delta
Thu 4/301:10 pm
AUA
- SEA
1 stop13h 43m
Delta
Deal found 4/9![Delta logo]()
$590
This United Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/107:25 am
SEA
- SJU
1 stop13h 25m
United Airlines
Thu 5/143:56 pm
SJU
- SEA
1 stop11h 03m
United Airlines
Deal found 4/10![United Airlines logo]()
$546
This Air Canada deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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.
Thu 6/410:45 am
SEA
- BGI
2 stops25h 35m
Air Canada
Sun 6/74:20 pm
BGI
- SEA
1 stop31h 48m
Air Canada
Deal found 4/7![Air Canada logo]()
$605
This Southwest deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 7/139:25 pm
SEA
- MBJ
2 stops13h 25m
Southwest
Tue 7/2112:35 pm
MBJ
- SEA
2 stops12h 55m
Southwest
Deal found 4/9![Southwest logo]()
$569
This American Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/1410:16 pm
SEA
- SXM
1 stop14h 06m
American Airlines
Thu 5/282:22 pm
SXM
- SEA
1 stop12h 46m
American Airlines
Deal found 4/8![American Airlines logo]()
$647
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/310:41 pm
SEA
- SJU
1 stop10h 53m
United Airlines
Sat 5/97:20 am
SJU
- SEA
2 stops16h 46m
United Airlines
Deal found 4/7![United Airlines logo]()
$546
This Delta deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/17:35 pm
SEA
- PUJ
2 stops14h 05m
Delta
Tue 5/52:19 pm
PUJ
- SEA
2 stops12h 40m
Delta
Deal found 4/9![Delta logo]()
$610
This Southwest deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 8/1811:05 pm
SEA
- SJU
2 stops11h 30m
Southwest
Mon 8/246:00 am
SJU
- SEA
2 stops11h 55m
Southwest
Deal found 4/10![Southwest logo]()
$574
This American Airlines deal was found by Cheapflights users on 4/11. Clicking the “Pick Dates” 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 8/2410:00 pm
SEA
- POP
2 stops11h 33m
American Airlines
Fri 9/41:34 pm
POP
- SEA
2 stops22h 45m
American Airlines
Deal found 4/11![American Airlines logo]()
$654
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/295:00 am
SEA
- SJU
2 stops15h 50m
United Airlines
Tue 5/57:20 am
SJU
- SEA
2 stops18h 27m
United Airlines
Deal found 4/7![United Airlines logo]()
$546
This Delta deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/211:15 pm
SEA
- AUA
1 stop9h 15m
Delta
Thu 5/73:25 pm
AUA
- SEA
1 stop11h 34m
Delta
Deal found 4/7![Delta logo]()
$613
Last-minute flights from Seattle to CaribbeanDiscover last-minute flight deals from Seattle to Caribbean. Data last updated April 12, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Caribbean. Data last updated April 12, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 4/1412:59 am
SEA
- STT
2 stops12h 16m
American Airlines
Fri 4/2412:25 pm
STT
- SEA
2 stops15h 11m
American Airlines
Deal found 4/8![American Airlines logo]()
$495
This American Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 4/1610:47 pm
SEA
- STT
1 stop10h 48m
American Airlines
Mon 4/2012:25 pm
STT
- SEA
1 stop14h 19m
American Airlines
Deal found 4/9![American Airlines logo]()
$490
This United Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 4/302:10 pm
STT
- SEA
1 stop12h 49m
United Airlines
Deal found 4/8![United Airlines logo]()
$465
This American Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 4/276:19 pm
SEA
- SJU
2 stops11h 54m
American Airlines
Mon 5/411:59 pm
SJU
- SEA
1 stop12h 36m
American Airlines
Deal found 4/8![American Airlines logo]()
$475
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/295:00 pm
SEA
- SJU
1 stop18h 42m
American Airlines
Tue 5/510:03 am
SJU
- SEA
2 stops14h 19m
American Airlines
Deal found 4/7![American Airlines logo]()
$480
This Delta deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/54:36 pm
SEA
- STT
2 stops18h 15m
Delta
Thu 5/141:16 pm
STT
- SEA
1 stop13h 43m
Delta
Deal found 4/8![Delta logo]()
$440
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/57:10 pm
SEA
- SJU
2 stops12h 25m
Southwest
Tue 5/125:05 am
SJU
- SEA
2 stops16h 25m
Southwest
Deal found 4/7![Southwest logo]()
$474
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/610:47 pm
SEA
- STT
1 stop10h 48m
American Airlines
Wed 5/131:15 pm
STT
- SEA
1 stop10h 49m
American Airlines
Deal found 4/7![American Airlines logo]()
$425
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/62:10 pm
SEA
- SJU
1 stop11h 22m
American Airlines
Wed 5/131:31 pm
SJU
- SEA
1 stop13h 13m
American Airlines
Deal found 4/7![American Airlines logo]()
$479
This FlightHub deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/711:06 am
SEA
- MBJ
2 stops23h 05m
Frontier
Thu 5/141:16 pm
MBJ
- SEA
2 stops22h 33m
Frontier
Deal found 4/8![Frontier logo]()
$435
This United Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/97:25 am
SEA
- SJU
1 stop13h 25m
United Airlines
Wed 5/133:56 pm
SJU
- SEA
1 stop11h 03m
United Airlines
Deal found 4/7![United Airlines logo]()
$491
This Delta deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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
Wed 6/32:35 pm
SJU
- SEA
1 stop11h 11m
Delta
Deal found 4/10![Delta logo]()
$494
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 12, 2026.
Search for one-way flight options from Seattle to Caribbean. Find affordable one-way fares based on user searches. Data last updated April 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 stops49h 17m
Frontier
Deal found 4/8![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/67:50 pm
SEA
- SJU
2 stops49h 07m
Frontier
Deal found 4/8![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/77:50 pm
SEA
- SJU
2 stops49h 09m
Frontier
Deal found 4/10![Frontier logo]()
$173
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/1810:16 pm
SEA
- SXM
1 stop14h 06m
American Airlines
Deal found 4/7![American Airlines logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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
3 stops19h 47m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$186
This Delta deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/185:00 pm
SEA
- SXM
1 stop17h 51m
Delta
Deal found 4/8![Delta logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” 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 5/147:50 pm
SEA
- SJU
2 stops25h 07m
Frontier
Deal found 4/10![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 4/11. Clicking the “Pick Dates” 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 4/205:30 pm
SEA
- SJU
2 stops12h 49m
Multiple Airlines
Deal found 4/11![Multiple Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/1812:59 am
SEA
- STT
2 stops12h 16m
American Airlines
Deal found 4/7![American Airlines logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 4/1710:59 pm
SEA
- SJU
2 stops46h 59m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/911:06 am
SEA
- PUJ
2 stops24h 18m
Frontier
Deal found 4/9![Frontier logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 4/11. Clicking the “Pick Dates” 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 4/197:12 pm
SEA
- SJU
2 stops27h 49m
Frontier
Deal found 4/11![Frontier logo]()
$215
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 12, 2026.
Round-trip from | $425 (American Airlines) |
|---|---|
One-way from | $151 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $645 |
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 12, 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
SeattleSaint Thomas Island
SEA - STT
SEASTT
Seattle/Tacoma Intl
Wed 5/6
6:19 pm-11:35 am
2 stops14h 16m
Saint Thomas Island Cyril E King
Wed 5/13
1:15 pm-12:36 am
2 stops14h 21m
$425
SeattleSaint Thomas Island
SEA - STT
SEASTT
Seattle/Tacoma Intl
Thu 5/7
7:59 pm-12:06 pm
2 stops13h 07m
Saint Thomas Island Cyril E King
Thu 5/14
3:01 pm-11:59 pm
1 stop11h 58m
$440
SeattleSaint Thomas Island
SEA - STT
SEASTT
Seattle/Tacoma Intl
Wed 5/6
10:40 pm-12:06 pm
1 stop10h 26m
Saint Thomas Island Cyril E King
Wed 5/13
3:01 pm-11:59 pm
1 stop11h 58m
$440
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 5/18
6:15 pm-10:35 am
2 stops13h 20m
San Juan Luis Munoz Marin Intl
Sat 5/23
5:15 am-11:00 pm
2 stops20h 45m
$514
SeattleSimpson Bay
SEA - SXM
SEASXM
Seattle/Tacoma Intl
Tue 5/26
10:40 pm-2:43 pm
2 stops13h 03m
Simpson Bay Princess Juliana
Tue 6/2
1:35 pm-7:56 am
2 stops21h 21m
$526
SeattleSaint Thomas Island
SEA - STT
SEASTT
Seattle/Tacoma Intl
Sun 5/3
11:59 pm-3:43 pm
1 stop12h 44m
Saint Thomas Island Cyril E King
Wed 5/13
1:22 pm-10:52 pm
1 stop12h 30m
$530
SeattleSaint Thomas Island
SEA - STT
SEASTT
Seattle/Tacoma Intl
Sat 5/9
10:41 pm-12:20 pm
1 stop10h 39m
Saint Thomas Island Cyril E King
Tue 5/12
1:22 pm-10:52 pm
1 stop12h 30m
$530
SeattleSaint Thomas Island
SEA - STT
SEASTT
Seattle/Tacoma Intl
Mon 5/4
7:36 pm-1:08 pm
2 stops14h 32m
Saint Thomas Island Cyril E King
Thu 5/7
1:22 pm-10:52 pm
1 stop12h 30m
$530
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sun 8/16
6:50 pm-10:55 am
2 stops13h 05m
San Juan Luis Munoz Marin Intl
Mon 8/24
5:30 am-3:00 pm
1 stop12h 30m
$534
SeattleMontego Bay
SEA - MBJ
SEAMBJ
Seattle/Tacoma Intl
Fri 9/18
11:05 pm-12:25 pm
2 stops11h 20m
Montego Bay Sangster Intl
Sat 9/26
12:20 pm-10:55 pm
2 stops12h 35m
$539
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-SJU
SEA-SXM
SEA-STT
SEA-PUJ
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-SJU
SEA-SXM
SEA-STT
SEA-PUJ
What is the cheapest month to book a flight from Seattle to Caribbean?
Currently, January is the cheapest month in which you can book a flight from Seattle to Caribbean (average of $215). Flying from Seattle to Caribbean in July is currently the most expensive (average of $422). 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 12, 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.
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top countries
Top destinations
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 12, 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 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$175 | Average$344 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$206 | Average$683 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$292 | Average$601 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$327 | Average$517 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$349 | Average$762 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$363 | Average$688 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$454 | Average$828 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$521 | Average$678 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$587 | Average$727 | FlexibilityNo cancel fee | On-time75% |