$192+ Cheap flights from Seattle (SEA) to Puerto Rico
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Aug 31 — Sep 71
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Puerto Rico 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 Puerto Rico
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Cheapest flights from Seattle to Puerto RicoExplore the most affordable flight options available from Seattle to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.
Explore the most affordable flight options available from Seattle to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.
This American Airlines deal was found by Cheapflights users on 7/30. 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 9/95:02 pm
SEA
- SJU
2 stops13h 22m
American Airlines
Wed 9/166:00 am
SJU
- SEA
2 stops16h 48m
American Airlines
Deal found 7/30![American Airlines logo]()
$441
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:25 am
SEA
- SJU
1 stop14h 34m
American Airlines
Wed 9/23:28 pm
SJU
- SEA
1 stop11h 52m
American Airlines
Deal found 7/27![American Airlines logo]()
$450
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:40 am
SEA
- SJU
2 stops12h 20m
Southwest
Wed 9/21:20 pm
SJU
- SEA
2 stops12h 45m
Southwest
Deal found 7/27![Southwest logo]()
$451
This Southwest deal was found by Cheapflights users on 7/30. 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 9/1310:30 pm
SEA
- SJU
1 stop13h 00m
Southwest
Sat 9/2611:45 am
SJU
- SEA
2 stops14h 15m
Southwest
Deal found 7/30![Southwest logo]()
$460
This Southwest deal was found by Cheapflights users on 7/28. 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.
Fri 9/1110:30 pm
SEA
- SJU
1 stop11h 40m
Southwest
Fri 9/185:00 am
SJU
- SEA
2 stops13h 00m
Southwest
Deal found 7/28![Southwest logo]()
$465
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:00 am
SEA
- SJU
1 stop9h 38m
United Airlines
Fri 10/307:05 am
SJU
- SEA
2 stops14h 58m
United Airlines
Deal found 7/27![United Airlines logo]()
$466
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Fri 9/2510:45 pm
SEA
- SJU
1 stop11h 47m
American Airlines
Wed 9/302:22 pm
SJU
- SEA
1 stop11h 35m
American Airlines
Deal found 7/30![American Airlines logo]()
$471
This Southwest deal was found by Cheapflights users on 7/30. 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.
Sat 12/510:55 am
SEA
- SJU
2 stops19h 35m
Southwest
Thu 12/1012:35 pm
SJU
- SEA
2 stops14h 55m
Southwest
Deal found 7/30![Southwest logo]()
$475
This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:45 pm
SEA
- SJU
1 stop11h 47m
American Airlines
Sat 10/32:58 pm
SJU
- SEA
1 stop11h 54m
American Airlines
Deal found 7/28![American Airlines logo]()
$480
This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:15 pm
SEA
- SJU
2 stops12h 31m
American Airlines
Sun 11/13:50 pm
SJU
- SEA
1 stop12h 45m
American Airlines
Deal found 7/28![American Airlines logo]()
$481
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:50 pm
SEA
- SJU
1 stop9h 34m
American Airlines
Sat 10/310:16 am
SJU
- SEA
1 stop16h 36m
American Airlines
Deal found 7/27![American Airlines logo]()
$484
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:00 am
SEA
- BQN
2 stops15h 09m
United Airlines
Sat 9/1212:15 am
BQN
- SEA
1 stop13h 48m
United Airlines
Deal found 7/29![United Airlines logo]()
$490
Best flights from Seattle to Puerto RicoDiscover carefully curated flight deals from Seattle to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2026.
Discover carefully curated flight deals from Seattle to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2026.
This Southwest deal was found by Cheapflights users on 7/30. 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.
Fri 10/309:00 am
SEA
- SJU
2 stops13h 20m
Southwest
Tue 11/312:35 pm
SJU
- SEA
2 stops13h 40m
Southwest
Deal found 7/30![Southwest logo]()
$466
This United Airlines deal was found by Cheapflights users on 8/1. 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 9/15:00 am
SEA
- BQN
2 stops15h 09m
United Airlines
Sat 9/1212:15 am
BQN
- SEA
1 stop13h 48m
United Airlines
Deal found 8/1![United Airlines logo]()
$494
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/235:45 am
SEA
- SJU
2 stops14h 05m
Delta
Tue 2/27:00 am
SJU
- SEA
2 stops17h 27m
Delta
Deal found 7/27![Delta logo]()
$494
This Southwest deal was found by Cheapflights users on 7/28. 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.
Fri 9/116:15 am
SEA
- SJU
2 stops14h 40m
Southwest
Fri 9/185:00 am
SJU
- SEA
2 stops13h 00m
Southwest
Deal found 7/28![Southwest logo]()
$482
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sun 10/117:00 am
SEA
- BQN
1 stop13h 09m
United Airlines
Mon 10/1912:15 am
BQN
- SEA
2 stops17h 38m
United Airlines
Deal found 7/31![United Airlines logo]()
$494
This Delta deal was found by Cheapflights users on 7/29. 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.
Thu 11/1210:50 pm
SEA
- SJU
1 stop10h 15m
Delta
Mon 11/162:05 pm
SJU
- SEA
1 stop12h 55m
Delta
Deal found 7/29![Delta logo]()
$494
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:05 am
SEA
- SJU
2 stops11h 15m
Southwest
Fri 10/3010:10 am
SJU
- SEA
2 stops13h 25m
Southwest
Deal found 7/27![Southwest logo]()
$497
This Southwest deal was found by Cheapflights users on 7/31. 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.
Sun 8/306:50 pm
SEA
- SJU
2 stops13h 05m
Southwest
Sun 9/66:00 am
SJU
- SEA
2 stops14h 45m
Southwest
Deal found 7/31![Southwest logo]()
$511
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:59 pm
SEA
- SJU
1 stop12h 43m
United Airlines
Sat 8/297:00 am
SJU
- SEA
2 stops14h 29m
United Airlines
Deal found 7/27![United Airlines logo]()
$570
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Mon 10/268:09 am
SEA
- SJU
1 stop10h 13m
United Airlines
Mon 10/261:05 am
SJU
- SEA
2 stops17h 27m
United Airlines
Deal found 7/31![United Airlines logo]()
$579
This Southwest deal was found by Cheapflights users on 7/28. 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.
Sun 12/67:55 pm
SEA
- SJU
2 stops11h 50m
Southwest
Sat 12/125:40 am
SJU
- SEA
2 stops14h 25m
Southwest
Deal found 7/28![Southwest logo]()
$541
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/66:50 am
SEA
- BQN
1 stop13h 07m
United Airlines
Sat 1/161:09 am
BQN
- SEA
1 stop13h 50m
United Airlines
Deal found 7/27![United Airlines logo]()
$625
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:58 pm
SEA
- CPX
2 stops15h 23m
United Airlines
Tue 9/1510:48 am
CPX
- SEA
2 stops15h 48m
United Airlines
Deal found 7/27![United Airlines logo]()
$1,558
Last-minute flights from Seattle to Puerto RicoDiscover last-minute flight deals from Seattle to Puerto Rico. Data last updated August 1, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Puerto Rico. Data last updated August 1, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1812:58 pm
SEA
- SJU
1 stop17h 45m
American Airlines
Mon 8/2412:55 am
SJU
- SEA
1 stop11h 34m
American Airlines
Deal found 7/27![American Airlines logo]()
$466
This American Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 8/2012:58 pm
SEA
- SJU
1 stop17h 45m
American Airlines
Sat 8/2212:55 am
SJU
- SEA
1 stop11h 34m
American Airlines
Deal found 7/28![American Airlines logo]()
$496
This American Airlines deal was found by Cheapflights users on 7/28. 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.
Sun 8/235:15 am
SEA
- SJU
1 stop16h 00m
American Airlines
Fri 8/287:03 am
SJU
- SEA
1 stop16h 55m
American Airlines
Deal found 7/28![American Airlines logo]()
$475
This Southwest deal was found by Cheapflights users on 7/29. 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.
Sun 8/236:50 pm
SEA
- SJU
2 stops13h 05m
Southwest
Fri 8/2810:00 am
SJU
- SEA
2 stops13h 45m
Southwest
Deal found 7/29![Southwest logo]()
$494
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:30 pm
SEA
- SJU
1 stop11h 20m
Southwest
Tue 9/11:20 pm
SJU
- SEA
2 stops12h 45m
Southwest
Deal found 7/27![Southwest logo]()
$481
This United Airlines deal was found by Cheapflights users on 7/31. 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 8/255:00 am
SEA
- BQN
2 stops15h 09m
United Airlines
Fri 8/2812:15 am
BQN
- SEA
2 stops18h 59m
United Airlines
Deal found 7/31![United Airlines logo]()
$884
This American Airlines deal was found by Cheapflights users on 7/30. 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 8/268:21 pm
SEA
- SJU
1 stop10h 22m
American Airlines
Wed 9/27:03 am
SJU
- SEA
1 stop18h 53m
American Airlines
Deal found 7/30![American Airlines logo]()
$441
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:40 am
SEA
- SJU
2 stops12h 20m
Southwest
Wed 9/21:20 pm
SJU
- SEA
2 stops12h 45m
Southwest
Deal found 7/27![Southwest logo]()
$451
This American Airlines deal was found by Cheapflights users on 7/29. 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 8/278:21 pm
SEA
- SJU
1 stop15h 17m
American Airlines
Sat 9/126:00 am
SJU
- SEA
2 stops13h 42m
American Airlines
Deal found 7/29![American Airlines logo]()
$471
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:58 pm
SEA
- BQN
1 stop21h 11m
United Airlines
Sun 8/3012:15 am
BQN
- SEA
2 stops14h 29m
United Airlines
Deal found 7/29![United Airlines logo]()
$770
This Southwest deal was found by Cheapflights users on 7/28. 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.
Fri 8/287:25 pm
SEA
- SJU
2 stops12h 25m
Southwest
Sat 9/510:25 am
SJU
- SEA
2 stops14h 05m
Southwest
Deal found 7/28![Southwest logo]()
$460
This American Airlines deal was found by Cheapflights users on 7/29. 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.
Fri 8/2811:56 pm
SEA
- SJU
2 stops11h 55m
American Airlines
Mon 8/3110:33 am
SJU
- SEA
2 stops12h 37m
American Airlines
Deal found 7/29![American Airlines logo]()
$484
One-way flights from Seattle to Puerto RicoSearch for one-way flight options from Seattle to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated August 1, 2026.
Search for one-way flight options from Seattle to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated August 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sat 8/297:06 pm
SEA
- SJU
2 stops26h 28m
Frontier
Deal found 7/30![Frontier logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Thu 8/277:06 pm
SEA
- SJU
2 stops26h 50m
Frontier
Deal found 7/30![Frontier logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:07 pm
SEA
- SJU
2 stops26h 49m
Frontier
Deal found 7/28![Frontier logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:27 pm
SEA
- SJU
2 stops28h 31m
Frontier
Deal found 7/27![Frontier logo]()
$212
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:20 am
SEA
- SJU
2 stops12h 45m
Southwest
Deal found 7/28![Southwest logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/287:06 pm
SEA
- SJU
2 stops26h 50m
Frontier
Deal found 7/31![Frontier logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:34 am
SEA
- SJU
2 stops24h 42m
Frontier
Deal found 7/28![Frontier logo]()
$231
This American Airlines deal was found by Cheapflights users on 7/28. 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 9/15:00 am
SEA
- SJU
2 stops13h 55m
American Airlines
Deal found 7/28![American Airlines logo]()
$233
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:56 pm
SEA
- SJU
1 stop20h 19m
American Airlines
Deal found 7/27![American Airlines logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:13 pm
SEA
- SJU
2 stops58h 06m
Frontier
Deal found 7/28![Frontier logo]()
$240
This Southwest deal was found by Cheapflights users on 7/28. 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.
Sat 9/510:30 pm
SEA
- SJU
1 stop11h 55m
Southwest
Deal found 7/28![Southwest logo]()
$242
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Mon 8/108:53 pm
SEA
- BQN
2 stops26h 17m
Frontier
Deal found 7/29![Frontier logo]()
$348
Find flight deals from Seattle to Puerto Rico
Keep the following information in mind while searching for Seattle to Puerto Rico flight deals. Data was last updated August 1, 2026.
Round-trip from | $441 (American Airlines) |
|---|---|
One-way from | $192 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $574 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Puerto Rico 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 August 1, 2026.
Use the filters below to find and compare flights from Seattle to Puerto Rico that are best for you.
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Route
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Cheapest round-trip
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Fri 10/30
9:00 am-1:20 am
2 stops13h 20m
San Juan Luis Munoz Marin Intl
Tue 11/3
12:35 pm-10:15 pm
2 stops13h 40m
$466
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Fri 9/11
6:15 am-11:55 pm
2 stops14h 40m
San Juan Luis Munoz Marin Intl
Fri 9/18
5:00 am-3:00 pm
2 stops13h 00m
$482
SeattleAguadilla
SEA - BQN
SEABQN
Seattle/Tacoma Intl
Tue 9/1
5:00 am-11:09 pm
2 stops15h 09m
Aguadilla Borinquen
Sat 9/12
12:15 am-11:03 am
1 stop13h 48m
$494
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sat 1/23
5:45 am-11:50 pm
2 stops14h 05m
San Juan Luis Munoz Marin Intl
Tue 2/2
7:00 am-8:27 pm
2 stops17h 27m
$494
SeattleAguadilla
SEA - BQN
SEABQN
Seattle/Tacoma Intl
Sun 10/11
7:00 am-11:09 pm
1 stop13h 09m
Aguadilla Borinquen
Mon 10/19
12:15 am-2:53 pm
2 stops17h 38m
$494
Quickest round-trip
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Thu 11/12
10:50 pm-1:05 pm
1 stop10h 15m
San Juan Luis Munoz Marin Intl
Mon 11/16
2:05 pm-11:00 pm
1 stop12h 55m
$494
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Thu 10/22
11:05 am-1:20 am
2 stops11h 15m
San Juan Luis Munoz Marin Intl
Fri 10/30
10:10 am-8:35 pm
2 stops13h 25m
$497
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sun 8/30
6:50 pm-10:55 am
2 stops13h 05m
San Juan Luis Munoz Marin Intl
Sun 9/6
6:00 am-5:45 pm
2 stops14h 45m
$511
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sun 12/6
7:55 pm-11:45 am
2 stops11h 50m
San Juan Luis Munoz Marin Intl
Sat 12/12
5:40 am-4:05 pm
2 stops14h 25m
$541
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 8/24
11:59 pm-3:42 pm
1 stop12h 43m
San Juan Luis Munoz Marin Intl
Sat 8/29
7:00 am-6:29 pm
2 stops14h 29m
$570
Showing 1-10 of 29 resultsSorted by cheapest first
Best time to book a flight from Seattle to Puerto Rico
Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Seattle with our price prediction graph.
SEA-SJU
SEA-BQN
SEA-CPX
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 Puerto Rico
SEA-PR0
SEA-SJU
SEA-BQN
SEA-CPX
What is the cheapest month to book a flight from Seattle to Puerto Rico?
Currently, October is the cheapest month in which you can book a flight from Seattle to Puerto Rico (average of $453). Flying from Seattle to Puerto Rico in December is currently the most expensive (average of $776). 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.
How far ahead should I book a flight from Seattle to Puerto Rico?
Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Puerto Rico. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Puerto Rico
Get insights into the airlines that provide service to Puerto Rico. 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 Puerto Rico. Reviews last updated August 1, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Seattle to Puerto Rico. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Seattle to Puerto Rico. 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 Puerto Rico
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Puerto Rico by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Puerto Rico by cabin class
Find flights from Seattle to Puerto Rico, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Puerto Rico flights
Browse other Seattle and Puerto Rico flight options. Last updated on August 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 8 airlines flying from Seattle to Puerto Rico
Discover the top 8 airlines that operate flights from Seattle to Puerto Rico. 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 August 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$175 | Average$344 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$327 | Average$410 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$342 | Average$620 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$363 | Average$653 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$364 | Average$593 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$454 | Average$810 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$474 | Average$604 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$587 | Average$678 | FlexibilityNo cancel fee | On-time75% |