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Luis Munoz Marin Intl

$139+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from Seattle to Luis Munoz Marin Intl

Cheapest flights from Seattle to Luis Munoz Marin Intl
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 January 26, 2026.

This American Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/211:57 pm
SEA
-
SJU
1 stop11h 14m
American Airlines
Tue 3/35:25 pm
SJU
-
SEA
1 stop10h 59m
American Airlines
Deal found 1/25$379
This American Airlines deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” 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 2/225:37 am
SEA
-
SJU
1 stop13h 54m
American Airlines
Tue 3/35:25 pm
SJU
-
SEA
1 stop10h 59m
American Airlines
Deal found 1/24$384
This CheapOair deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:30 am
SEA
-
SJU
1 stop12h 09m
Multiple Airlines
Sat 5/304:10 pm
SJU
-
SEA
1 stop18h 35m
Multiple Airlines
Deal found 1/24$397
This Travelocity deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:30 am
SEA
-
SJU
1 stop12h 09m
JetBlue
Tue 5/266:00 am
SJU
-
SEA
1 stop17h 53m
JetBlue
Deal found 1/25$400
This eDestinos deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” 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.
Mon 2/239:56 pm
SEA
-
SJU
2 stops31h 58m
Multiple Airlines
Mon 3/26:00 am
SJU
-
SEA
3 stops40h 18m
Multiple Airlines
Deal found 1/24$403
This United Airlines deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” 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 4/76:30 am
SEA
-
SJU
1 stop11h 08m
United Airlines
Tue 4/147:20 am
SJU
-
SEA
2 stops14h 40m
United Airlines
Deal found 1/24$425
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2711:59 pm
SEA
-
SJU
1 stop11h 45m
United Airlines
Mon 5/41:40 pm
SJU
-
SEA
1 stop12h 19m
United Airlines
Deal found 1/25$427
This Southwest deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” 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 4/275:35 pm
SEA
-
SJU
2 stops14h 00m
Southwest
Mon 5/42:00 pm
SJU
-
SEA
2 stops13h 05m
Southwest
Deal found 1/25$428
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” 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 5/75:05 am
SEA
-
SJU
1 stop9h 33m
United Airlines
Thu 5/147:20 am
SJU
-
SEA
1 stop11h 21m
United Airlines
Deal found 1/25$433
This Sun Country Air deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/226:33 pm
SEA
-
SJU
1 stop16h 09m
Sun Country Air
Sat 5/304:10 pm
SJU
-
SEA
1 stop18h 35m
Sun Country Air
Deal found 1/26$434
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” 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 5/1511:00 pm
SEA
-
SJU
1 stop11h 45m
United Airlines
Wed 5/207:40 am
SJU
-
SEA
1 stop11h 08m
United Airlines
Deal found 1/26$437

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 January 26, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$379
(American Airlines)

One-way from

$139
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$479
Provider with most accurate pricing for Seattle/Tacoma Intl-San Juan Luis Munoz Marin Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San Juan Luis Munoz Marin Intl flights.
Search Deals
From Seattle/Tacoma Intl to San Juan Luis Munoz Marin Intl
Search Deals
One-way flight from Seattle/Tacoma Intl to San Juan Luis Munoz Marin Intl
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 26, 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

Seattle

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 4/21

5:00 am-8:34 pm

2 stops12h 34m

San Juan Luis Munoz Marin Intl

Mon 4/27

1:00 am-11:02 am

1 stop13h 02m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 4/18

11:15 pm-11:50 am

1 stop9h 35m

San Juan Luis Munoz Marin Intl

Sat 4/25

7:15 am-7:59 pm

1 stop15h 44m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 3/18

7:00 am-8:00 pm

1 stop10h 00m

San Juan Luis Munoz Marin Intl

Tue 3/24

1:05 am-11:10 am

1 stop13h 05m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 4/7

6:30 am-8:38 pm

1 stop11h 08m

San Juan Luis Munoz Marin Intl

Tue 4/14

7:20 am-7:00 pm

2 stops14h 40m

$425

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 4/22

6:00 am-9:05 pm

2 stops12h 05m

San Juan Luis Munoz Marin Intl

Wed 4/29

11:25 am-11:55 pm

2 stops15h 30m

$448

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 3/3

7:00 am-12:36 am

2 stops13h 36m

San Juan Luis Munoz Marin Intl

Tue 3/10

7:05 am-7:03 pm

2 stops14h 58m

$474

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 2/23

11:59 pm-3:40 pm

1 stop11h 41m

San Juan Luis Munoz Marin Intl

Wed 2/25

2:05 am-11:14 am

1 stop13h 09m

$474

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 2/28

9:00 am-6:11 am

2 stops17h 11m

San Juan Luis Munoz Marin Intl

Tue 3/10

7:05 am-7:03 pm

2 stops14h 58m

$474

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 2/23

9:14 pm-11:09 pm

2 stops45h 55m

$155

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 4/13

12:42 pm-9:54 am

2 stops18h 12m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Showing 1-10 of 17 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.
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

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 January 23, 2026.

Booking 47 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, March is the cheapest month in which you can book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport (average of $285). Flying from Seattle to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of $477). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to San Juan Luis Munoz Marin Intl Airport?

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 January 26, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United 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.
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,113 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,200 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,189 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
JetBlue
7.2
Good
2,892 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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.

  • What airport do you fly from for flights from Seattle to San Juan Luis Munoz Marin Intl?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to San Juan Luis Munoz Marin Intl. On average, Seattle/Tacoma Intl has 0 outbound flights to San Juan Luis Munoz Marin Intl per day from 9 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • How long is the flight from Seattle to San Juan Luis Munoz Marin Intl Airport?

    There are many flights that can get you from Seattle to San Juan Luis Munoz Marin Intl Airport in 9h 35m. Fly via United Airlines or Delta to get the fastest option. Seattle and San Juan Luis Munoz Marin Intl Airport are separated by a distance of 3723 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to San Juan Luis Munoz Marin Intl Airport round-trip?

    Flying on Frontier is currently your cheapest option to San Juan Luis Munoz Marin Intl Airport, with prices starting at $175. Additional round-trip tickets that might be worth considering are offered by Spirit Airlines and JetBlue, with the lowest prices starting at $191 and $282, respectively. Frontier is 69% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to San Juan Luis Munoz Marin Intl Airport one-way?

    The cheapest airlines for a one-way flight from Seattle to San Juan Luis Munoz Marin Intl Airport are JetBlue ($170), American Airlines ($178), and Delta ($182).

  • Where are the most common layover locations when flying from Seattle to San Juan Luis Munoz Marin Intl Airport?

    Of the flights from Seattle to San Juan Luis Munoz Marin Intl Airport that have layovers, most of them stop in Dallas. Miami follows Dallas in terms of the most common layover location on Seattle to San Juan Luis Munoz Marin Intl Airport flights.

  • What are some popular things to do or see while on a layover in Dallas?

    The majority of Dallas visitors spend their time at American Airlines Center, Dallas World Aquarium, and Reunion Tower. Travelers on a layover in Dallas can visit American Airlines Center, Dallas World Aquarium, and Reunion Tower, by traveling 15.0 mi, 15.5 mi, and 15.6 mi, respectively after landing at Dallas/Fort Worth. Those looking to explore during their layover in Dallas can rent a car from Dallas/Fort Worth for about $51 per day.

  • What are some popular points of interest to see during a layover in Miami?

    Miami travelers tend to visit Kaseya Center, Bayfront Park, and Bayside Marketplace more than any other notable places. Travelers on a layover in Miami can visit Kaseya Center, Bayfront Park, and Bayside Marketplace, by traveling 6.2 mi, 6.4 mi, and 6.4 mi, respectively after landing at Miami. Travelers can book a car rental at Miami for about $33 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Seattle to San Juan Luis Munoz Marin Intl Airport flights?

    Of the flights from Seattle to San Juan Luis Munoz Marin Intl Airport that have layovers, the fewest flights stop in Charlotte. Charlotte is followed by Atlanta in terms of the least popular layover location on flights from Seattle to San Juan Luis Munoz Marin Intl Airport.

  • Can I find deals for flights from Seattle to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Seattle to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Luis Munoz Marin Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Luis Munoz Marin Intl.

  • Can I find deals for business class flights from Seattle to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Seattle to Luis Munoz Marin Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport?

    Currently, March is the cheapest month in which you can book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport (average of $285). Flying from Seattle to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of $477). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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 locations
Fajardo
Dorado
Luquillo
Rio Grande
Humacao
Bayamón

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Alternative routes for Seattle to Luis Munoz Marin Intl

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Luis Munoz Marin Intl flights
Spokane to Luis Munoz Marin Intl flights
Pasco to Luis Munoz Marin Intl flights

Top 9 airlines flying from Seattle to Luis Munoz Marin Intl

Discover the top 9 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$175Average$344FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$191Average$341FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$282Average$553FlexibilityNo cancel feeOn-time62%
DeltaCheapest$342Average$605FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$363Average$574FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$363Average$576FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$454Average$810FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$521Average$695FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$626Average$880FlexibilityNo cancel feeOn-time75%

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