$148+ Cheap flights from Seattle (SEA) to Luis Munoz Marin Intl (SJU)
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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Apr 12 — Apr 191
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Luis Munoz Marin Intl with Cheapflights
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Cheapest flights from Seattle to Luis Munoz Marin IntlExplore the most affordable flight options available from Seattle to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 13, 2026.
Explore the most affordable flight options available from Seattle to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 13, 2026.
This Delta deal was found by Cheapflights users on 3/9. 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.
Mon 4/1311:14 pm
SEA
- SJU
1 stop10h 38m
Delta
Wed 4/297:15 am
SJU
- SEA
1 stop15h 44m
Delta
Deal found 3/9![Delta logo]()
$396
This KAYAK deal was found by Cheapflights users on 3/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:59 pm
SEA
- SJU
1 stop13h 51m
JetBlue
Sun 9/201:25 pm
SJU
- SEA
1 stop11h 59m
JetBlue
Deal found 3/8![JetBlue logo]()
$413
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Mon 4/276:19 pm
SEA
- SJU
2 stops11h 54m
American Airlines
Mon 5/45:45 am
SJU
- SEA
1 stop20h 59m
American Airlines
Deal found 3/9![American Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2511:11 pm
SEA
- SJU
1 stop10h 41m
Delta
Thu 4/301:25 pm
SJU
- SEA
1 stop12h 06m
Delta
Deal found 3/11![Delta logo]()
$416
This Southwest deal was found by Cheapflights users on 3/8. 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 4/205:35 pm
SEA
- SJU
2 stops14h 00m
Southwest
Tue 4/2811:25 am
SJU
- SEA
2 stops15h 30m
Southwest
Deal found 3/8![Southwest logo]()
$422
This United Airlines deal was found by Cheapflights users on 3/8. 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 4/186:30 am
SEA
- SJU
1 stop11h 08m
United Airlines
Sat 4/257:00 am
SJU
- SEA
2 stops14h 35m
United Airlines
Deal found 3/8![United Airlines logo]()
$423
This KAYAK deal was found by Cheapflights users on 3/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:59 pm
SEA
- SJU
1 stop11h 57m
JetBlue
Mon 9/211:25 pm
SJU
- SEA
1 stop11h 59m
JetBlue
Deal found 3/10![JetBlue logo]()
$433
This American Airlines deal was found by Cheapflights users on 3/8. 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 4/3012:59 am
SEA
- SJU
1 stop19h 03m
American Airlines
Tue 5/511:43 am
SJU
- SEA
2 stops13h 55m
American Airlines
Deal found 3/8![American Airlines logo]()
$434
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:40 pm
SEA
- SJU
1 stop10h 32m
Delta
Fri 5/17:15 am
SJU
- SEA
1 stop15h 44m
Delta
Deal found 3/11![Delta logo]()
$435
This American Airlines deal was found by Cheapflights users on 3/8. 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 12/11:04 am
SEA
- SJU
1 stop9h 53m
American Airlines
Wed 12/92:05 pm
SJU
- SEA
2 stops13h 33m
American Airlines
Deal found 3/8![American Airlines logo]()
$439
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Wed 4/296:00 am
SEA
- SJU
1 stop14h 02m
American Airlines
Thu 5/1411:59 pm
SJU
- SEA
1 stop13h 49m
American Airlines
Deal found 3/9![American Airlines logo]()
$440
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Sun 4/2610:25 am
SEA
- SJU
1 stop9h 37m
American Airlines
Sat 5/26:00 am
SJU
- SEA
1 stop18h 23m
American Airlines
Deal found 3/10![American Airlines logo]()
$443
Best flights from Seattle to Luis Munoz Marin IntlDiscover carefully curated flight deals from Seattle to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 13, 2026.
Discover carefully curated flight deals from Seattle to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 13, 2026.
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Wed 4/87:00 am
SEA
- SJU
1 stop10h 34m
United Airlines
Wed 4/221:00 am
SJU
- SEA
1 stop13h 02m
United Airlines
Deal found 3/11![United Airlines logo]()
$435
This Southwest deal was found by Cheapflights users on 3/8. 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.
Sat 6/207:35 pm
SEA
- SJU
2 stops10h 50m
Southwest
Sun 7/125:20 am
SJU
- SEA
1 stop16h 45m
Southwest
Deal found 3/8![Southwest logo]()
$540
This United Airlines deal was found by Cheapflights users on 3/7. 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.
Mon 4/1310:55 pm
SEA
- SJU
1 stop11h 50m
United Airlines
Wed 4/157:00 am
SJU
- SEA
2 stops17h 39m
United Airlines
Deal found 3/7![United Airlines logo]()
$486
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:30 am
SEA
- SJU
2 stops11h 35m
Southwest
Thu 4/232:00 pm
SJU
- SEA
2 stops13h 05m
Southwest
Deal found 3/11![Southwest logo]()
$540
This Southwest deal was found by Cheapflights users on 3/7. 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.
Thu 9/310:30 pm
SEA
- SJU
2 stops12h 15m
Southwest
Tue 9/88:20 am
SJU
- SEA
2 stops12h 35m
Southwest
Deal found 3/7![Southwest logo]()
$540
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Sun 3/295:00 am
SEA
- SJU
1 stop9h 38m
United Airlines
Fri 4/37:00 am
SJU
- SEA
2 stops14h 00m
United Airlines
Deal found 3/11![United Airlines logo]()
$568
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Mon 4/277:37 pm
SEA
- SJU
2 stops15h 08m
United Airlines
Mon 5/47:20 am
SJU
- SEA
2 stops19h 39m
United Airlines
Deal found 3/11![United Airlines logo]()
$612
This Southwest deal was found by Cheapflights users on 3/9. 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.
Wed 9/210:30 pm
SEA
- SJU
2 stops12h 15m
Southwest
Mon 9/76:00 am
SJU
- SEA
2 stops11h 55m
Southwest
Deal found 3/9![Southwest logo]()
$666
This United Airlines deal was found by Cheapflights users on 3/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1811:59 pm
SEA
- SJU
1 stop11h 45m
United Airlines
Sat 4/257:20 am
SJU
- SEA
2 stops14h 26m
United Airlines
Deal found 3/9![United Airlines logo]()
$619
This United Airlines deal was found by Cheapflights users on 3/8. 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 4/147:00 am
SEA
- SJU
2 stops13h 50m
United Airlines
Thu 4/161:00 am
SJU
- SEA
2 stops18h 37m
United Airlines
Deal found 3/8![United Airlines logo]()
$636
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Mon 4/136:30 am
SEA
- SJU
1 stop11h 08m
United Airlines
Fri 4/171:00 am
SJU
- SEA
2 stops16h 46m
United Airlines
Deal found 3/11![United Airlines logo]()
$639
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Mon 6/17:05 pm
SEA
- SJU
2 stops14h 29m
United Airlines
Thu 6/117:20 am
SJU
- SEA
2 stops17h 39m
United Airlines
Deal found 3/11![United Airlines logo]()
$655
Last-minute flights from Seattle to Luis Munoz Marin IntlDiscover last-minute flight deals from Seattle to Luis Munoz Marin Intl. Data last updated March 13, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Luis Munoz Marin Intl. Data last updated March 13, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/9. 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.
Mon 4/1311:14 pm
SEA
- SJU
1 stop10h 38m
Delta
Wed 4/297:15 am
SJU
- SEA
1 stop15h 44m
Delta
Deal found 3/9![Delta logo]()
$396
This United Airlines deal was found by Cheapflights users on 3/8. 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 4/186:30 am
SEA
- SJU
1 stop11h 08m
United Airlines
Sat 4/257:00 am
SJU
- SEA
2 stops14h 35m
United Airlines
Deal found 3/8![United Airlines logo]()
$423
This Southwest deal was found by Cheapflights users on 3/8. 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 4/205:35 pm
SEA
- SJU
2 stops14h 00m
Southwest
Tue 4/2811:25 am
SJU
- SEA
2 stops15h 30m
Southwest
Deal found 3/8![Southwest logo]()
$422
This eDestinos deal was found by Cheapflights users on 3/11. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:51 pm
SEA
- SJU
2 stops26h 52m
Multiple Airlines
Tue 4/2811:30 am
SJU
- SEA
3 stops48h 57m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$459
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2511:11 pm
SEA
- SJU
1 stop10h 41m
Delta
Thu 4/301:25 pm
SJU
- SEA
1 stop12h 06m
Delta
Deal found 3/11![Delta logo]()
$416
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Sun 4/2610:25 am
SEA
- SJU
1 stop9h 37m
American Airlines
Sat 5/26:00 am
SJU
- SEA
1 stop18h 23m
American Airlines
Deal found 3/10![American Airlines logo]()
$443
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Mon 4/276:19 pm
SEA
- SJU
2 stops11h 54m
American Airlines
Mon 5/45:45 am
SJU
- SEA
1 stop20h 59m
American Airlines
Deal found 3/9![American Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:40 pm
SEA
- SJU
1 stop10h 32m
Delta
Fri 5/17:15 am
SJU
- SEA
1 stop15h 44m
Delta
Deal found 3/11![Delta logo]()
$435
This Southwest deal was found by Cheapflights users on 3/7. 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 4/286:00 am
SEA
- SJU
2 stops13h 40m
Southwest
Tue 5/125:05 am
SJU
- SEA
2 stops16h 25m
Southwest
Deal found 3/7![Southwest logo]()
$458
This United Airlines deal was found by Cheapflights users on 3/7. 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.
Tue 4/288:00 am
SEA
- SJU
1 stop10h 24m
United Airlines
Tue 5/127:00 am
SJU
- SEA
2 stops14h 32m
United Airlines
Deal found 3/7![United Airlines logo]()
$461
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 4/2811:33 pm
SEA
- SJU
2 stops13h 02m
American Airlines
Mon 5/1111:59 pm
SJU
- SEA
1 stop13h 49m
American Airlines
Deal found 3/9![American Airlines logo]()
$465
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Wed 4/296:00 am
SEA
- SJU
1 stop14h 02m
American Airlines
Thu 5/1411:59 pm
SJU
- SEA
1 stop13h 49m
American Airlines
Deal found 3/9![American Airlines logo]()
$440
One-way flights from Seattle to Luis Munoz Marin IntlSearch for one-way flight options from Seattle to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated March 13, 2026.
Search for one-way flight options from Seattle to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated March 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 5/910:42 am
SEA
- SJU
2 stops36h 19m
Frontier
Deal found 3/8![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 5/17:12 pm
SEA
- SJU
2 stops43h 19m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Sun 5/311:12 am
SEA
- SJU
2 stops19h 42m
Frontier
Deal found 3/8![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Mon 5/47:12 pm
SEA
- SJU
2 stops27h 49m
Frontier
Deal found 3/8![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 5/210:57 am
SEA
- SJU
2 stops20h 42m
Frontier
Deal found 3/8![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Tue 4/287:12 pm
SEA
- SJU
2 stops51h 54m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Wed 5/67:50 pm
SEA
- SJU
2 stops53h 11m
Frontier
Deal found 3/11![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Thu 5/710:42 am
SEA
- SJU
2 stops36h 19m
Frontier
Deal found 3/8![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 5/1111:06 am
SEA
- SJU
2 stops36h 02m
Frontier
Deal found 3/11![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Tue 4/75:29 pm
SEA
- SJU
2 stops23h 21m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Thu 5/74:20 pm
SEA
- SJU
3 stops30h 46m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$192
Find flight deals from Seattle to Luis Munoz Marin Intl
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Luis Munoz Marin Intl (SJU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $396 (United Airlines) |
One-way from | $148 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $597 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Luis Munoz Marin Intl 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 March 13, 2026.
Use the filters below to find and compare flights from Seattle to San Juan Luis Munoz Marin Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Wed 4/8
7:00 am-8:34 pm
1 stop10h 34m
San Juan Luis Munoz Marin Intl
Wed 4/22
1:00 am-11:02 am
1 stop13h 02m
$435
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 4/13
10:55 pm-1:45 pm
1 stop11h 50m
San Juan Luis Munoz Marin Intl
Wed 4/15
7:00 am-9:39 pm
2 stops17h 39m
$486
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sat 6/20
7:35 pm-9:25 am
2 stops10h 50m
San Juan Luis Munoz Marin Intl
Sun 7/12
5:20 am-7:05 pm
1 stop16h 45m
$540
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Wed 4/8
6:30 am-9:05 pm
2 stops11h 35m
San Juan Luis Munoz Marin Intl
Thu 4/23
2:00 pm-12:05 am
2 stops13h 05m
$540
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Thu 9/3
10:30 pm-1:45 pm
2 stops12h 15m
San Juan Luis Munoz Marin Intl
Tue 9/8
8:20 am-5:55 pm
2 stops12h 35m
$540
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sun 3/29
5:00 am-5:38 pm
1 stop9h 38m
San Juan Luis Munoz Marin Intl
Fri 4/3
7:00 am-6:00 pm
2 stops14h 00m
$568
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 4/27
7:37 pm-1:45 pm
2 stops15h 08m
San Juan Luis Munoz Marin Intl
Mon 5/4
7:20 am-11:59 pm
2 stops19h 39m
$612
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sat 4/18
11:59 pm-2:44 pm
1 stop11h 45m
San Juan Luis Munoz Marin Intl
Sat 4/25
7:20 am-6:46 pm
2 stops14h 26m
$619
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Tue 4/14
7:00 am-11:50 pm
2 stops13h 50m
San Juan Luis Munoz Marin Intl
Thu 4/16
1:00 am-4:37 pm
2 stops18h 37m
$636
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 4/13
6:30 am-8:38 pm
1 stop11h 08m
San Juan Luis Munoz Marin Intl
Fri 4/17
1:00 am-2:46 pm
2 stops16h 46m
$639
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Seattle to Luis Munoz Marin Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Luis Munoz Marin Intl in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-San Juan Luis Munoz Marin Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-San Juan Luis Munoz Marin Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-San Juan Luis Munoz Marin Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Luis Munoz Marin Intl
Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Seattle with our price prediction graph.
SEA-SJU
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 San Juan Luis Munoz Marin Intl Airport
Prices
More
How far ahead should I book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to Luis Munoz Marin Intl. Price data was last updated on March 6, 2026.
Booking 78 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to San Juan Luis Munoz Marin Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport?
Currently, May is the cheapest month in which you can book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport (average of $323). Flying from Seattle to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of $417). 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.
What’s the top layover airport for flights from Seattle to San Juan Luis Munoz Marin Intl Airport?
Share of 1-stop round-trip flights from Seattle to San Juan Luis Munoz Marin Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Houston (IAH) – chosen by Cheapflights users on 50% of 1-stop itineraries from Seattle to San Juan Luis Munoz Marin Intl Airport on Cheapflights.
What’s the cheapest layover airport for flights from Seattle to San Juan Luis Munoz Marin Intl Airport?
Average round-trip fare for 1-stop flights from Seattle to San Juan Luis Munoz Marin Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Houston (IAH) is the most affordable 1-stop option, with an average round-trip price of $748.
What’s the fastest layover option from Seattle to San Juan Luis Munoz Marin Intl Airport?
Shortest average travel time for 1-stop one-way flights from Seattle to San Juan Luis Munoz Marin Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Houston (IAH) have the shortest average one-way travel time for 1-stop routes: 10h 28m.
Which airport typically offers the quickest layover for flights from Seattle to San Juan Luis Munoz Marin Intl Airport?
Average layover duration for 1-stop one-way flights from Seattle to San Juan Luis Munoz Marin Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Houston (IAH) offer the fastest connection on this route, with an average layover time of 1h 22m.
Reviews of airlines servicing Luis Munoz Marin Intl
Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated March 13, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Seattle to San Juan Luis Munoz Marin Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Related info for your journey
Find useful and relevant information for your journey from Seattle to Luis Munoz Marin Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Juan Luis Munoz Marin Intl Airport?
Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locationsFajardo
Dorado
Luquillo
Rio Grande
Humacao
Bayamón
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Other flights to Luis Munoz Marin Intl
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Seattle and Luis Munoz Marin Intl flights
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Top 8 airlines flying from Seattle to Luis Munoz Marin Intl
Discover the top 8 airlines that operate flights from Seattle to Luis Munoz Marin Intl. 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 March 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$218 | Average$341 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$224 | Average$579 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$282 | Average$477 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$363 | Average$560 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$363 | Average$583 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$454 | Average$828 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$521 | Average$610 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$598 | Average$880 | FlexibilityNo cancel fee | On-time75% |