$203+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Jul 11 — Jul 181
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 June 11, 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 June 11, 2026.
This Southwest deal was found by Cheapflights users on 6/8. 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.
Tue 10/66:35 am
SEA
- SJU
2 stops13h 05m
Southwest
Tue 10/135:35 am
SJU
- SEA
2 stops13h 10m
Southwest
Deal found 6/8![Southwest logo]()
$436
This Southwest deal was found by Cheapflights users on 6/9. 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 8/2410:30 pm
SEA
- SJU
1 stop11h 20m
Southwest
Thu 8/275:30 am
SJU
- SEA
1 stop12h 30m
Southwest
Deal found 6/9![Southwest logo]()
$450
This United Airlines deal was found by Cheapflights users on 6/7. 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 9/55:00 am
SEA
- SJU
1 stop9h 38m
United Airlines
Sat 9/51:00 am
SJU
- SEA
2 stops18h 14m
United Airlines
Deal found 6/7![United Airlines logo]()
$459
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/229:40 pm
SEA
- SJU
1 stop12h 54m
JetBlue
Fri 10/210:30 am
SJU
- SEA
1 stop13h 12m
JetBlue
Deal found 6/9![JetBlue logo]()
$460
This Southwest deal was found by Cheapflights users on 6/11. 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.
Tue 8/186:40 am
SEA
- SJU
2 stops12h 20m
Southwest
Sun 8/236:35 am
SJU
- SEA
2 stops13h 05m
Southwest
Deal found 6/11![Southwest logo]()
$464
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 9/28:21 pm
SEA
- SJU
1 stop16h 50m
American Airlines
Tue 9/87:00 am
SJU
- SEA
1 stop18h 56m
American Airlines
Deal found 6/10![American Airlines logo]()
$469
This American Airlines deal was found by Cheapflights users on 6/8. 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 8/1511:16 pm
SEA
- SJU
1 stop12h 38m
American Airlines
Wed 8/266:00 am
SJU
- SEA
2 stops13h 41m
American Airlines
Deal found 6/8![American Airlines logo]()
$473
This American Airlines deal was found by Cheapflights users on 6/10. 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 8/275:10 am
SEA
- SJU
1 stop15h 49m
American Airlines
Sat 9/56:00 am
SJU
- SEA
1 stop21h 20m
American Airlines
Deal found 6/10![American Airlines logo]()
$489
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 8/1211:56 pm
SEA
- SJU
1 stop20h 19m
American Airlines
Sat 9/53:47 pm
SJU
- SEA
1 stop10h 02m
American Airlines
Deal found 6/10![American Airlines logo]()
$494
This Southwest deal was found by Cheapflights users on 6/11. 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.
Mon 8/176:15 pm
SEA
- SJU
2 stops13h 45m
Southwest
Mon 8/246:30 am
SJU
- SEA
2 stops14h 05m
Southwest
Deal found 6/11![Southwest logo]()
$500
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Tue 9/2211:00 pm
SEA
- SJU
2 stops11h 53m
United Airlines
Thu 10/11:00 am
SJU
- SEA
2 stops13h 27m
United Airlines
Deal found 6/9![United Airlines logo]()
$502
This Southwest deal was found by Cheapflights users on 6/8. 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 8/106:15 pm
SEA
- SJU
2 stops13h 45m
Southwest
Mon 8/176:30 am
SJU
- SEA
2 stops14h 05m
Southwest
Deal found 6/8![Southwest logo]()
$505
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 June 11, 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 June 11, 2026.
This Southwest deal was found by Cheapflights users on 6/9. 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.
Tue 8/185:20 am
SEA
- SJU
2 stops12h 45m
Southwest
Sun 8/236:35 am
SJU
- SEA
2 stops13h 05m
Southwest
Deal found 6/9![Southwest logo]()
$464
This Delta deal was found by Cheapflights users on 6/8. 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 12/27:20 am
SEA
- SJU
1 stop12h 35m
Delta
Wed 12/91:55 pm
SJU
- SEA
2 stops14h 16m
Delta
Deal found 6/8![Delta logo]()
$464
This United Airlines deal was found by Cheapflights users on 6/10. 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 10/28:29 pm
SEA
- SJU
2 stops16h 13m
United Airlines
Mon 10/122:00 pm
SJU
- SEA
1 stop11h 59m
United Airlines
Deal found 6/10![United Airlines logo]()
$619
This Delta deal was found by Cheapflights users on 6/7. 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.
Sun 11/89:20 pm
SEA
- SJU
1 stop13h 00m
Delta
Thu 11/197:15 am
SJU
- SEA
1 stop16h 08m
Delta
Deal found 6/7![Delta logo]()
$464
This Southwest deal was found by Cheapflights users on 6/11. 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.
Mon 8/176:15 pm
SEA
- SJU
2 stops13h 45m
Southwest
Mon 8/246:30 am
SJU
- SEA
2 stops14h 05m
Southwest
Deal found 6/11![Southwest logo]()
$500
This Southwest deal was found by Cheapflights users on 6/9. 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.
Fri 11/1312:15 am
SEA
- SJU
1 stop10h 45m
Southwest
Sun 11/229:35 pm
SJU
- SEA
2 stops18h 25m
Southwest
Deal found 6/9![Southwest logo]()
$565
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:00 am
SEA
- SJU
1 stop13h 13m
Delta
Sat 12/57:15 am
SJU
- SEA
2 stops17h 12m
Delta
Deal found 6/6![Delta logo]()
$570
This Southwest deal was found by Cheapflights users on 6/10. 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.
Mon 7/2711:05 am
SEA
- SJU
1 stop10h 30m
Southwest
Mon 8/310:20 am
SJU
- SEA
2 stops14h 30m
Southwest
Deal found 6/10![Southwest logo]()
$666
This Southwest deal was found by Cheapflights users on 6/7. 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.
Mon 7/65:30 am
SEA
- SJU
2 stops13h 00m
Southwest
Sun 7/125:45 am
SJU
- SEA
1 stop16h 10m
Southwest
Deal found 6/7![Southwest logo]()
$691
This Southwest deal was found by Cheapflights users on 6/7. 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.
Mon 7/65:30 am
SEA
- SJU
2 stops13h 00m
Southwest
Sat 7/119:10 am
SJU
- SEA
2 stops14h 00m
Southwest
Deal found 6/7![Southwest logo]()
$691
Last-minute flights from Seattle to Luis Munoz Marin IntlDiscover last-minute flight deals from Seattle to Luis Munoz Marin Intl. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Luis Munoz Marin Intl. Data last updated June 11, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/7. 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 7/15:00 am
SEA
- SJU
1 stop9h 38m
United Airlines
Sat 7/41:40 pm
SJU
- SEA
2 stops14h 33m
United Airlines
Deal found 6/7![United Airlines logo]()
$570
This Faresmojo deal was found by Cheapflights users on 6/7. 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 Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/110:58 pm
SEA
- SJU
1 stop9h 46m
JetBlue
Tue 7/72:21 pm
SJU
- SEA
1 stop11h 12m
JetBlue
Deal found 6/7![JetBlue logo]()
$606
This American Airlines deal was found by Cheapflights users on 6/8. 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 7/65:10 am
SEA
- SJU
1 stop14h 49m
American Airlines
Mon 7/2712:59 am
SJU
- SEA
1 stop11h 28m
American Airlines
Deal found 6/8![American Airlines logo]()
$544
This American Airlines deal was found by Cheapflights users on 6/8. 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 7/76:00 am
SEA
- SJU
1 stop14h 48m
American Airlines
Mon 7/2712:59 am
SJU
- SEA
1 stop11h 28m
American Airlines
Deal found 6/8![American Airlines logo]()
$599
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 7/145:10 am
SEA
- SJU
1 stop14h 49m
American Airlines
Tue 7/2110:35 am
SJU
- SEA
1 stop16h 32m
American Airlines
Deal found 6/11![American Airlines logo]()
$594
This American Airlines deal was found by Cheapflights users on 6/8. 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 7/165:10 am
SEA
- SJU
1 stop14h 49m
American Airlines
Tue 7/2110:35 am
SJU
- SEA
1 stop16h 32m
American Airlines
Deal found 6/8![American Airlines logo]()
$579
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Wed 7/225:10 am
SEA
- SJU
1 stop14h 49m
American Airlines
Tue 7/2812:59 am
SJU
- SEA
1 stop11h 28m
American Airlines
Deal found 6/8![American Airlines logo]()
$569
This Southwest deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3011:05 am
SEA
- SJU
1 stop10h 30m
Southwest
Sun 8/25:45 am
SJU
- SEA
1 stop16h 10m
Southwest
Deal found 6/6![Southwest logo]()
$595
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Fri 7/315:00 am
SEA
- SJU
1 stop9h 38m
United Airlines
Sun 8/22:05 am
SJU
- SEA
1 stop11h 42m
United Airlines
Deal found 6/9![United Airlines logo]()
$602
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 June 11, 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 June 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Mon 8/108:53 pm
SEA
- SJU
2 stops48h 35m
Frontier
Deal found 6/10![Frontier logo]()
$203
This Southwest deal was found by Cheapflights users on 6/8. 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 8/106:15 pm
SEA
- SJU
2 stops13h 45m
Southwest
Deal found 6/8![Southwest logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Tue 9/297:00 am
SEA
- SJU
2 stops29h 19m
Frontier
Deal found 6/9![Frontier logo]()
$229
This Delta deal was found by Cheapflights users on 6/8. 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.
Fri 8/2111:59 pm
SEA
- SJU
2 stops13h 39m
Delta
Deal found 6/8![Delta logo]()
$232
This American Airlines deal was found by Cheapflights users on 6/8. 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 8/245:10 am
SEA
- SJU
1 stop15h 49m
American Airlines
Deal found 6/8![American Airlines logo]()
$236
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 8/1211:56 pm
SEA
- SJU
1 stop20h 19m
American Airlines
Deal found 6/10![American Airlines logo]()
$237
This American Airlines deal was found by Cheapflights users on 6/7. 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 11/111:53 pm
SEA
- SJU
1 stop19h 11m
American Airlines
Deal found 6/7![American Airlines logo]()
$241
This American Airlines deal was found by Cheapflights users on 6/8. 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 7/65:10 am
SEA
- SJU
1 stop14h 49m
American Airlines
Deal found 6/8![American Airlines logo]()
$257
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:00 am
SEA
- SJU
1 stop10h 34m
United Airlines
Deal found 6/6![United Airlines logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/198:53 pm
SEA
- SJU
2 stops48h 35m
Frontier
Deal found 6/7![Frontier logo]()
$270
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 June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $436 (Southwest) |
One-way from | $203 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $662 |
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 June 11, 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
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Tue 8/18
5:20 am-9:05 pm
2 stops12h 45m
San Juan Luis Munoz Marin Intl
Sun 8/23
6:35 am-4:40 pm
2 stops13h 05m
$464
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Wed 12/2
7:20 am-11:55 pm
1 stop12h 35m
San Juan Luis Munoz Marin Intl
Wed 12/9
1:55 pm-12:11 am
2 stops14h 16m
$464
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sun 11/8
9:20 pm-2:20 pm
1 stop13h 00m
San Juan Luis Munoz Marin Intl
Thu 11/19
7:15 am-7:23 pm
1 stop16h 08m
$464
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 8/17
6:15 pm-11:00 am
2 stops13h 45m
San Juan Luis Munoz Marin Intl
Mon 8/24
6:30 am-5:35 pm
2 stops14h 05m
$500
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Fri 11/13
12:15 am-3:00 pm
1 stop10h 45m
San Juan Luis Munoz Marin Intl
Sun 11/22
9:35 pm-12:00 pm
2 stops18h 25m
$565
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Fri 11/27
6:00 am-11:13 pm
1 stop13h 13m
San Juan Luis Munoz Marin Intl
Sat 12/5
7:15 am-8:27 pm
2 stops17h 12m
$570
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Fri 10/2
8:29 pm-3:42 pm
2 stops16h 13m
San Juan Luis Munoz Marin Intl
Mon 10/12
2:00 pm-10:59 pm
1 stop11h 59m
$619
Quickest round-trip
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 7/27
11:05 am-12:35 am
1 stop10h 30m
San Juan Luis Munoz Marin Intl
Mon 8/3
10:20 am-9:50 pm
2 stops14h 30m
$666
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 7/6
5:30 am-9:30 pm
2 stops13h 00m
San Juan Luis Munoz Marin Intl
Sun 7/12
5:45 am-6:55 pm
1 stop16h 10m
$691
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 7/6
5:30 am-9:30 pm
2 stops13h 00m
San Juan Luis Munoz Marin Intl
Sat 7/11
9:10 am-8:10 pm
2 stops14h 00m
$691
Showing 1-10 of 18 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 June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 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
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How far ahead should I book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport?
Booking 60 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, October is the cheapest month in which you can book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport (average of $462). Flying from Seattle to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $828). 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 much does it cost to fly round-trip from Seattle to San Juan Luis Munoz Marin Intl Airport?
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 33% 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.
Miami (MIA) is the most affordable 1-stop option, with an average round-trip price of $615.
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 Miami (MIA) have the shortest average one-way travel time for 1-stop routes: 9h 46m.
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 Miami (MIA) offer the fastest connection on this route, with an average layover time of 1h 08m.
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 June 11, 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.
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
7.9
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
7.9
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
7.9
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
7.9
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
7.9
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
7.9
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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
Luquillo
Rio Grande
Dorado
Humacao
Bayamón
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Other flights to Luis Munoz Marin Intl
Explore flights to Luis Munoz Marin Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 11, 2026.
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 June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$175 | Average$344 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$282 | Average$451 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$342 | Average$660 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$363 | Average$559 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$365 | Average$588 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$454 | Average$828 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$494 | Average$616 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$587 | Average$727 | FlexibilityNo cancel fee | On-time75% |