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$180+ Cheap flights from San José (SJO) 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — SEA
Nov 11 — Nov 181
Tue 11/11
Tue 11/18
1 adult, Economy
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Cheapflights Tip: The best prices from San José Juan Santamaria Intl to Seattle/Tacoma Intl are usually found in October or September, booked 39 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

Cheap flight deals from San José to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from San José (SJO) 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 October 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$385
(Southwest)

One-way from

$180
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$482
Provider with most accurate pricing for San José Juan Santamaria Intl-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for San José Juan Santamaria Intl-Seattle/Tacoma Intl flights.
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From San José Juan Santamaria Intl to Seattle/Tacoma Intl
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One-way flight from San José Juan Santamaria Intl to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 0% potential increase in price ($3 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from San José to Seattle

Cheapest flights from San José to Seattle
Explore the most affordable flight options available from San José to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 12, 2025.

This Southwest deal was found by Cheapflights users on 10/11. 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.
Wed 12/179:00 amSJO - SEA
2 stops15h 55mSouthwest
Tue 1/65:15 amSEA - SJO
2 stops12h 15mSouthwest
Deal found 10/11$385
This United Airlines deal was found by Cheapflights users on 10/10. 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 10/2811:35 amSJO - SEA
1 stop12h 11mUnited Airlines
Wed 11/58:00 amSEA - SJO
2 stops25h 25mUnited Airlines
Deal found 10/10$413
This American Airlines deal was found by Cheapflights users on 10/10. 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 10/286:44 amSJO - SEA
2 stops14h 41mAmerican Airlines
Tue 11/412:41 amSEA - SJO
1 stop18h 36mAmerican Airlines
Deal found 10/10$418
This Alaska Airlines deal was found by Cheapflights users on 10/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/61:55 amSJO - SEA
2 stops18h 53mAlaska Airlines
Fri 11/147:40 pmSEA - SJO
2 stops26h 58mAlaska Airlines
Deal found 10/11$420
This American Airlines deal was found by Cheapflights users on 10/11. 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 10/286:44 amSJO - SEA
2 stops14h 41mAmerican Airlines
Tue 11/45:24 amSEA - SJO
2 stops14h 49mAmerican Airlines
Deal found 10/11$425
This United Airlines deal was found by Cheapflights users on 10/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/307:45 amSJO - SEA
2 stops14h 28mUnited Airlines
Sat 11/81:20 pmSEA - SJO
2 stops15h 05mUnited Airlines
Deal found 10/11$426
This Kiwi.com deal was found by Cheapflights users on 10/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/108:47 amSJO - SEA
2 stops29h 20mMultiple Airlines
Mon 11/178:35 amSEA - SJO
1 stop25h 50mMultiple Airlines
Deal found 10/11$430
This eDestinos deal was found by Cheapflights users on 10/11. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3112:55 amSJO - SEA
2 stops17h 04mAlaska Airlines
Sun 11/96:25 amSEA - SJO
1 stop16h 13mAlaska Airlines
Deal found 10/11$432
This Kiwi.com deal was found by Cheapflights users on 10/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/152:20 amSJO - SEA
2 stops33h 33mMultiple Airlines
Tue 1/69:16 pmSEA - SJO
1 stop13h 09mMultiple Airlines
Deal found 10/11$436
This Avianca deal was found by Cheapflights users on 10/10. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/208:50 amSJO - SEA
1 stop14h 40mMultiple Airlines
Sat 10/258:30 amSEA - SJO
1 stop15h 20mMultiple Airlines
Deal found 10/10$438
This American Airlines deal was found by Cheapflights users on 10/11. 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.
Fri 11/72:59 pmSJO - SEA
1 stop21h 42mAmerican Airlines
Fri 11/145:00 pmSEA - SJO
1 stop19h 36mAmerican Airlines
Deal found 10/11$441

Cheapflights Fare Finder

 
Customize your flight search to find flights from San José 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 October 12, 2025.
Use the filters below to find and compare flights from San José to Seattle that are best for you.

Fly from

San José

Fly to

Seattle

Route

Depart

Return

Price

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Tue 10/28

11:35 am-10:46 pm

1 stop12h 11m

Seattle/Tacoma Intl

Wed 11/5

8:00 am-11:25 am

2 stops25h 25m

$413

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Thu 11/6

1:55 am-7:58 pm

1 stop20h 03m

Seattle/Tacoma Intl

Fri 11/14

7:40 pm-12:38 am

2 stops26h 58m

$420

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Mon 10/27

1:11 am-2:48 pm

1 stop14h 37m

Seattle/Tacoma Intl

Tue 11/4

9:35 am-12:38 am

2 stops13h 03m

$451

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Fri 12/19

9:00 am-12:55 am

2 stops17h 55m

Seattle/Tacoma Intl

Wed 12/24

5:15 am-8:30 pm

2 stops13h 15m

$469

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Mon 11/10

8:45 am-8:51 pm

2 stops14h 06m

Seattle/Tacoma Intl

Mon 11/17

7:28 pm-1:15 pm

2 stops15h 47m

$475

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Tue 10/28

1:05 pm-11:35 pm

1 stop11h 30m

Seattle/Tacoma Intl

Wed 11/5

6:05 am-9:17 pm

2 stops13h 12m

$495

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Fri 11/7

1:55 am-11:34 pm

1 stop23h 39m

Seattle/Tacoma Intl

Sat 11/15

7:00 am-12:38 am

2 stops15h 38m

$500

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Thu 3/5

2:26 am-11:58 am

1 stop11h 32m

Seattle/Tacoma Intl

Tue 3/10

9:45 am-10:00 pm

1 stop11h 15m

$502

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Tue 10/28

1:11 am-2:48 pm

1 stop14h 37m

$210

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Mon 12/15

1:30 am-7:17 pm

2 stops19h 47m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/11

Showing 1-10 of 14 results
1
2

Compare providers for flights from San José 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 San José to Seattle in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 San José-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San José-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San José-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San José-Seattle 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 San José-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 San José to Seattle

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

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

Use this chart to determine the optimal time to book a round-trip flight from San José to Seattle. Price data was last updated on October 10, 2025.

The price you pay for your flight from San José to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 39 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, October is the cheapest month in which you can book a flight from San José to Seattle (average of $371). Flying from San José to Seattle in January is currently the most expensive (average of $502). 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 SJO to SEA?

Find hourly flight availability from San José 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 October 12, 2025.

It’s typically best to fly out from San José to Seattle in the afternoon. Doing so could potentially save you 15% on the flight price compared to flying in the evening, which is usually more expensive.

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 October 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, United Airlines, and American Airlines from San José to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,066 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Alaska Airlines
8.0
Very good
11,066 reviews
Alaska Airlines
8.0
Very good
11,066 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
United Airlines
7.4
Good
8,973 reviews
Alaska Airlines
8.0
Very good
11,066 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
American Airlines
7.2
Good
11,043 reviews
Alaska Airlines
8.0
Very good
11,066 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Related info for your journey

Find useful and relevant information for your journey from San José to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    A quick flight from San José to Seattle can take about 12h 11m. United Airlines provides one of the quickest options available for as low as $413. The distance from San José to Seattle is about 3405 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $407, American Airlines will fly you from San José to Seattle and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Alaska Airlines - these airlines can fly you to your destination from $434 and $447, respectively. These flights start at 27% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from San José to Seattle (average of $371). Flying from San José to Seattle in January is currently the most expensive (average of $502). 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
Kent
Federal Way
Cle Elum
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Chehalis
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Aberdeen
Shoreline

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San José to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
San José to Portland flights
Liberia to Seattle flights
Liberia to Portland flights
San José to Spokane flights

Top 3 airlines flying from San José to Seattle

Discover the top 3 airlines that operate flights from San José 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 October 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$404Average$601FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$436Average$526FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$447Average$686FlexibilityNo cancel feeOn-time75%

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