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$166+ Cheap flights from San Juan 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — SEA
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from San Juan 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 San Juan to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) 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 September 16, 2025.

Round-trip from

$342
(SmartFares)

One-way from

$166
(Trip.com)

Popular in

July

Cheapest in

October

Average price

$454
From San Juan to Seattle/Tacoma Intl
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One-way flight from San Juan to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 13% potential increase in price ($78 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from San Juan to Seattle

Cheapest flights from San Juan to Seattle
Explore the most affordable flight options available from San Juan to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This JetBlue deal was found by Cheapflights users on 9/15. 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.
Thu 10/161:25 pmSJU - SEA
1 stop12h 11mJetBlue
Mon 10/2011:40 pmSEA - SJU
1 stop12h 14mJetBlue
Deal found 9/15$342
This JetBlue deal was found by Cheapflights users on 9/14. 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.
Thu 10/21:29 pmSJU - SEA
1 stop11h 55mJetBlue
Mon 10/611:40 pmSEA - SJU
1 stop12h 14mJetBlue
Deal found 9/14$347
This Delta deal was found by Cheapflights users on 9/14. 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.
Thu 11/131:57 pmSJU - SEA
2 stops14h 14mDelta
Tue 11/185:25 amSEA - SJU
2 stops13h 48mDelta
Deal found 9/14$363
This eDestinos deal was found by Cheapflights users on 9/15. 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 11/39:00 amSJU - SEA
1 stop29h 25mMultiple Airlines
Mon 11/1710:05 amSEA - SJU
1 stop13h 28mMultiple Airlines
Deal found 9/15$367
This American Airlines deal was found by Cheapflights users on 9/14. 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 11/34:56 pmSJU - SEA
1 stop10h 30mAmerican Airlines
Sun 11/1612:59 amSEA - SJU
2 stops12h 06mAmerican Airlines
Deal found 9/14$372
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/1611:56 amSJU - SEA
1 stop14h 39mAmerican Airlines
Tue 10/2112:34 amSEA - SJU
2 stops12h 21mAmerican Airlines
Deal found 9/14$380
This JetBlue deal was found by Cheapflights users on 9/13. 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.
Sat 9/271:25 pmSJU - SEA
1 stop11h 55mJetBlue
Sat 10/411:59 pmSEA - SJU
1 stop13h 58mJetBlue
Deal found 9/13$384
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:00 amSJU - SEA
1 stop19h 20mJetBlue
Sat 10/411:40 pmSEA - SJU
1 stop18h 44mJetBlue
Deal found 9/15$385
This American Airlines deal was found by Cheapflights users on 9/14. 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 11/36:25 amSJU - SEA
1 stop19h 55mAmerican Airlines
Mon 11/1012:41 amSEA - SJU
1 stop16h 54mAmerican Airlines
Deal found 9/14$389

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Juan 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 September 16, 2025.
Use the filters below to find and compare flights from San Juan to Seattle that are best for you.

Fly from

San Juan

Fly to

Seattle

Route

Depart

Return

Price

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Thu 10/16

1:25 pm-10:36 pm

1 stop12h 11m

Seattle/Tacoma Intl

Mon 10/20

11:40 pm-12:58 pm

1 stop10h 18m

$342

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Thu 10/2

1:29 pm-10:24 pm

1 stop11h 55m

Seattle/Tacoma Intl

Mon 10/6

11:40 pm-2:54 pm

1 stop12h 14m

$375

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Thu 11/13

1:57 pm-12:11 am

2 stops14h 14m

Seattle/Tacoma Intl

Tue 11/18

5:25 am-11:13 pm

2 stops13h 48m

$400

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Sat 9/27

1:25 pm-10:20 pm

1 stop11h 55m

Seattle/Tacoma Intl

Sun 10/5

11:40 pm-4:42 pm

1 stop14h 02m

$411

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Wed 10/1

1:29 pm-10:20 pm

1 stop11h 51m

Seattle/Tacoma Intl

Sun 10/5

11:40 pm-12:58 pm

1 stop10h 18m

$451

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Tue 11/4

8:30 am-6:52 pm

2 stops14h 22m

Seattle/Tacoma Intl

Tue 11/11

7:00 am-12:36 am

2 stops13h 36m

$453

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Wed 11/12

2:05 am-11:11 am

1 stop13h 06m

Seattle/Tacoma Intl

Tue 11/18

7:10 am-9:26 pm

1 stop10h 16m

$453

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Fri 10/24

1:05 am-10:29 am

1 stop12h 24m

Seattle/Tacoma Intl

Sat 11/1

11:59 pm-3:40 pm

1 stop12h 41m

$453

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Wed 10/15

1:05 am-10:47 am

1 stop12h 42m

Seattle/Tacoma Intl

Mon 10/20

10:54 pm-1:45 pm

1 stop11h 51m

$453

San JuanSeattle

SJU - SEA

SJUSEA

San Juan Luis Munoz Marin Intl

Fri 10/17

1:05 am-10:27 am

1 stop12h 22m

Seattle/Tacoma Intl

Sat 10/25

10:54 pm-11:49 am

1 stop9h 55m

$453

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 18 results
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Best time to book a flight from San Juan to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from San Juan 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 to Seattle

How far ahead should I book a flight from San Juan to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from San Juan to Seattle. Price data was last updated on September 12, 2025.

The best time to book flights from San Juan to Seattle is 71 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Juan to Seattle?

Currently, January is the cheapest month in which you can book a flight from San Juan to Seattle (average of $238). Flying from San Juan to Seattle in June is currently the most expensive (average of $387). 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 San Juan 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 September 16, 2025.

A simple way to save on the total cost of your ticket is to fly from San Juan 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 to Seattle?

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

Travelers seeking maximum savings on their San Juan 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.

How much does it cost to fly round-trip from San Juan 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 September 16, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from San Juan to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,957 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
United Airlines
7.4
Good
8,924 reviews
Delta
8.0
Very good
7,957 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,957 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
JetBlue
7.2
Good
2,914 reviews
Delta
8.0
Very good
7,957 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Spirit Airlines
6.3
Okay
8,019 reviews
Delta
8.0
Very good
7,957 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Related info for your journey

Find useful and relevant information for your journey from San Juan 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?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from San Juan to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from San Juan; the airport handles an average of 0 inbound flights from San Juan per day. You should also have plenty of airline options to choose from since 6 airlines have flights to the Seattle airport from San Juan. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

  • How long is the flight from San Juan to Seattle?

    Airlines like JetBlue and Delta fly from San Juan to Seattle in about 12h 11m. The time it takes to get you to your destination can typically vary by up to 2h 03m. San Juan and Seattle are separated by a distance of 3723 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from San Juan to Seattle round-trip?

    Our cheapest airline available from San Juan to Seattle is Spirit Airlines. Our recent data shows that you can find tickets from as low as $241 on this airline. Additional options worth looking into are JetBlue and United Airlines, starting at $304 and $327 round-trip. Spirit Airlines is currently priced 54% below the average price you’ll pay for this route.

  • Can I find deals for flights from San Juan to Seattle that include hotel bookings?

    Yes. In addition to deals on San Juan to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Juan to Seattle?

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

  • Can I find deals for business class flights from San Juan to Seattle?

    Yes. Cheapflights offers flight deals from San Juan 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 to Seattle?

    Currently, January is the cheapest month in which you can book a flight from San Juan to Seattle (average of $238). Flying from San Juan to Seattle in June is currently the most expensive (average of $387). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Lacey
Olympia
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Shoreline

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Alternative routes for San Juan to Seattle

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

Top 6 airlines flying from San Juan to Seattle

Discover the top 6 airlines that operate flights from San Juan 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$241Average$413FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$304Average$525FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$327Average$503FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$357Average$567FlexibilityNo cancel feeOn-time71%
DeltaCheapest$445Average$639FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$555Average$661FlexibilityNo cancel feeOn-time63%

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