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$133+ Cheap flights from Luis Munoz Marin Intl (SJU) to Seattle (SEA)

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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — SEA
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
1 adult, Economy
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Cheapflights Tip: The best prices from San Juan Luis Munoz Marin Intl to Seattle/Tacoma Intl are usually found in October or February, booked 71 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Luis Munoz Marin Intl to Seattle

Cheapest flights from Luis Munoz Marin Intl to Seattle
Explore the most affordable flight options available from Luis Munoz Marin Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.

This eDestinos deal was found by Cheapflights users on 12/8. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:25 amSJU - SEA
2 stops30h 46mFrontier
Mon 1/56:33 pmSEA - SJU
2 stops32h 01mFrontier
Deal found 12/8$367
This eDestinos deal was found by Cheapflights users on 12/6. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/213:54 amSJU - SEA
3 stops38h 00mMultiple Airlines
Mon 1/59:15 pmSEA - SJU
2 stops55h 53mMultiple Airlines
Deal found 12/6$383
This Trip.com deal was found by Cheapflights users on 12/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:49 amSJU - SEA
2 stops32h 02mFrontier
Mon 1/56:33 pmSEA - SJU
2 stops15h 45mFrontier
Deal found 12/8$435
This eDestinos deal was found by Cheapflights users on 12/6. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/171:59 amSJU - SEA
2 stops38h 31mMultiple Airlines
Fri 1/26:03 pmSEA - SJU
1 stop32h 31mMultiple Airlines
Deal found 12/6$443
This eDestinos deal was found by Cheapflights users on 12/6. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/171:59 amSJU - SEA
2 stops38h 31mFrontier
Fri 1/26:33 pmSEA - SJU
2 stops32h 01mFrontier
Deal found 12/6$444
This Southwest deal was found by Cheapflights users on 12/5. 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 12/233:25 pmSJU - SEA
2 stops14h 00mSouthwest
Wed 1/216:45 amSEA - SJU
2 stops13h 50mSouthwest
Deal found 12/5$447

Find flight deals from Luis Munoz Marin Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Luis Munoz Marin Intl (SJU) to Seattle (SEA). 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 December 8, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$333
(eDestinos)

One-way from

$133
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$600
Provider with most accurate pricing for San Juan Luis Munoz Marin Intl-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for San Juan Luis Munoz Marin Intl-Seattle/Tacoma Intl flights.
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From San Juan Luis Munoz Marin Intl to Seattle/Tacoma Intl
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One-way flight from San Juan Luis Munoz Marin Intl to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 10% potential increase in price ($60 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Luis Munoz Marin Intl to Seattle 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 December 8, 2025.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to Seattle that are best for you.

Fly from

Luis Munoz Marin Intl

Fly to

Seattle

Route

Depart

Return

Price

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Fri 2/27

7:00 am-11:42 pm

1 stop20h 42m

Seattle/Tacoma Intl

Mon 3/2

11:59 pm-3:42 pm

2 stops11h 43m

$407

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Wed 12/17

1:59 am-12:30 pm

2 stops38h 31m

Seattle/Tacoma Intl

Fri 1/2

6:03 pm-6:34 am

1 stop32h 31m

$443

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Wed 1/14

2:05 am-11:07 am

1 stop13h 02m

Seattle/Tacoma Intl

Sun 1/18

11:45 pm-2:40 pm

1 stop10h 55m

$453

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Thu 12/25

3:46 pm-10:52 pm

1 stop11h 06m

Seattle/Tacoma Intl

Mon 1/5

11:59 pm-4:36 pm

1 stop12h 37m

$477

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Thu 12/25

3:46 pm-10:52 pm

1 stop11h 06m

Seattle/Tacoma Intl

Tue 1/6

7:00 am-12:36 am

2 stops13h 36m

$512

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Sat 1/10

2:59 am-7:47 pm

3 stops44h 48m

$190

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Sat 2/21

2:59 am-12:14 pm

3 stops37h 15m

$206

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Tue 3/10

1:05 am-4:14 pm

2 stops18h 09m

$227

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Fri 12/19

9:49 am-10:11 am

2 stops52h 22m

$238

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Sat 2/21

7:49 pm-9:34 am

2 stops41h 45m

$243

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 15 results
1
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Compare providers for flights from Luis Munoz Marin Intl to Seattle

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 Luis Munoz Marin Intl to Seattle in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 San Juan Luis Munoz Marin Intl Airport-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Juan Luis Munoz Marin Intl Airport-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Juan Luis Munoz Marin Intl Airport-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-Seattle 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 San Juan Luis Munoz Marin Intl Airport-Seattle 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 Luis Munoz Marin Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport to Seattle

How far ahead should I book a flight from San Juan Luis Munoz Marin Intl Airport to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Luis Munoz Marin Intl to Seattle. Price data was last updated on December 5, 2025.

To ensure you get the cheapest price possible for a flight from San Juan Luis Munoz Marin Intl Airport to Seattle, you should look to book at least 71 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, May is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Seattle (average of $257). Flying from San Juan Luis Munoz Marin Intl Airport to Seattle in April is currently the most expensive (average of $384). 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 is the cheapest time of day to fly from SJU to SEA?

Find hourly flight availability from Luis Munoz Marin Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 8, 2025.

A simple way to save on the total cost of your ticket is to fly from San Juan Luis Munoz Marin Intl Airport to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 40% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from San Juan Luis Munoz Marin Intl Airport to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Luis Munoz Marin Intl to Seattle. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Juan Luis Munoz Marin Intl Airport to Seattle flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated December 8, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from San Juan Luis Munoz Marin Intl Airport to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,011 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,089 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,045 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
JetBlue
7.2
Good
2,899 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Spirit Airlines
6.3
Okay
8,168 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Luis Munoz Marin Intl to Seattle. 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 into for flights to Seattle from San Juan Luis Munoz Marin Intl?

    For a flight from San Juan Luis Munoz Marin Intl to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 0 inbound flights from San Juan Luis Munoz Marin Intl per day. 6 airlines have flights to Seattle/Tacoma Intl from San Juan Luis Munoz Marin Intl on a regular basis.

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

    For as low as $453, American Airlines can have you in Seattle from San Juan Luis Munoz Marin Intl Airport in 13h 02m. San Juan Luis Munoz Marin Intl Airport and Seattle are separated by a distance of 3723 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Our cheapest airline available from San Juan Luis Munoz Marin Intl Airport to Seattle is JetBlue. Our recent data shows that you can find tickets from as low as $179 on this airline. Additional options worth looking into are Spirit Airlines and Delta, starting at $241 and $357 round-trip. You may be able to fly from San Juan Luis Munoz Marin Intl Airport to Seattle for 66% less than the average price by searching for these airlines.

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

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as $174. However, be on the lookout for offers from American Airlines and Delta, as they are both options that can get you from San Juan Luis Munoz Marin Intl Airport to Seattle for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl to Seattle 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 San Juan Luis Munoz Marin Intl Airport to Seattle?

    Currently, May is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Seattle (average of $257). Flying from San Juan Luis Munoz Marin Intl Airport to Seattle in April is currently the most expensive (average of $384). 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

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Alternative routes for Luis Munoz Marin Intl to Seattle

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Luis Munoz Marin Intl to Portland flights

Top 6 airlines flying from Luis Munoz Marin Intl to Seattle

Discover the top 6 airlines that operate flights from Luis Munoz Marin Intl to Seattle. 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 December 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$241Average$413FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$304Average$525FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$363Average$558FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$367Average$515FlexibilityNo cancel feeOn-time69%
DeltaCheapest$429Average$660FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$555Average$609FlexibilityNo cancel feeOn-time63%

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