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$170+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 25 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap 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 June 12, 2025.

Round-trip from

$377
(United Airlines)

One-way from

$173
(SmartFares)

Popular in

July

Cheapest in

October

Average price

$634
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. 14% potential increase in price ($88 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 June 12, 2025.

This SmartFares deal was found by Cheapflights users on 6/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:41 pmSJU - SEA
2 stops25h 12mSpirit Airlines
Sun 10/54:58 pmSEA - SJU
2 stops18h 02mSpirit Airlines
Deal found 6/12$376
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.
Tue 11/115:55 amSJU - SEA
2 stops12h 53mAmerican Airlines
Tue 11/1810:35 amSEA - SJU
2 stops11h 35mAmerican Airlines
Deal found 6/10$377
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2612:50 pmSJU - SEA
1 stop12h 20mJetBlue
Sun 10/511:40 pmSEA - SJU
1 stop14h 02mJetBlue
Deal found 6/11$378
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/149:30 pmSJU - SEA
2 stops19h 36mFrontier
Sun 8/177:48 pmSEA - SJU
2 stops17h 07mFrontier
Deal found 6/11$408
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:30 amSJU - SEA
1 stop15h 06mDelta
Sat 9/275:50 pmSEA - SJU
2 stops16h 33mDelta
Deal found 6/10$414
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.
Wed 9/175:00 amSJU - SEA
2 stops13h 20mSouthwest
Wed 9/249:10 pmSEA - SJU
1 stop12h 30mSouthwest
Deal found 6/10$459
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.
Tue 9/161:05 amSJU - SEA
2 stops17h 09mUnited Airlines
Wed 9/2411:54 pmSEA - SJU
1 stop11h 50mUnited Airlines
Deal found 6/10$467
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/278:45 pmSJU - SEA
2 stops27h 11mMultiple Airlines
Mon 8/254:58 pmSEA - SJU
2 stops16h 49mMultiple Airlines
Deal found 6/10$477

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 June 12, 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

Thu 9/4

1:25 pm-9:56 pm

1 stop11h 31m

Seattle/Tacoma Intl

Mon 9/8

5:35 pm-12:00 pm

2 stops15h 25m

$377

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Fri 7/11

11:59 pm-4:25 pm

2 stops19h 26m

Seattle/Tacoma Intl

Mon 7/21

5:30 pm-3:30 pm

2 stops19h 00m

$394

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Thu 8/14

9:30 pm-2:06 pm

2 stops19h 36m

Seattle/Tacoma Intl

Sun 8/17

7:48 pm-3:55 pm

2 stops17h 07m

$408

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Sat 9/6

6:10 am-11:59 pm

1 stop20h 49m

Seattle/Tacoma Intl

Sat 9/13

5:26 am-11:37 pm

2 stops15h 11m

$412

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Wed 9/10

2:05 pm-10:10 pm

1 stop11h 05m

Seattle/Tacoma Intl

Wed 9/17

11:40 pm-2:54 pm

1 stop12h 14m

$429

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Fri 6/27

8:45 pm-8:56 pm

2 stops27h 11m

Seattle/Tacoma Intl

Mon 8/25

4:58 pm-12:47 pm

2 stops16h 49m

$477

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Fri 8/1

1:06 pm-11:59 pm

2 stops13h 53m

Seattle/Tacoma Intl

Sun 8/31

5:30 am-10:07 pm

2 stops13h 37m

$528

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Wed 6/25

10:00 am-8:00 pm

2 stops13h 00m

Seattle/Tacoma Intl

Fri 10/31

6:05 am-9:35 pm

2 stops12h 30m

$533

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Mon 7/14

11:59 pm-4:25 pm

2 stops19h 26m

$170

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Wed 11/12

4:55 pm-11:20 pm

1 stop10h 25m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 17 results
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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 June 9, 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 25 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, January is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Seattle (average of $238). Flying from San Juan Luis Munoz Marin Intl Airport to Seattle in July is currently the most expensive (average of $391). 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 June 12, 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 24% 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 Saturday evenings 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.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 June 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from San Juan to Seattle. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
JetBlue
7.3
Good
2,925 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • 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 United Airlines. Our recent data shows that you can find tickets from as low as $377 on this airline. Additional options worth looking into are Spirit Airlines and Frontier, starting at $394 and $408 round-trip. You may be able to fly from San Juan Luis Munoz Marin Intl Airport to Seattle for 28% 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 Spirit Airlines, with whom users have recently found tickets for as low as $173. However, be on the lookout for offers from American Airlines and United Airlines, 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, January is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Seattle (average of $238). Flying from San Juan Luis Munoz Marin Intl Airport to Seattle in July is currently the most expensive (average of $391). 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
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Luis Munoz Marin Intl to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$148Average$428FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$235Average$401FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$326Average$532FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$337Average$555FlexibilityNo cancel feeOn-time71%
DeltaCheapest$452Average$612FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$555Average$649FlexibilityNo cancel feeOn-time63%

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