HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$175+ 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — SEA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San José to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from San José Juan Santamaria Intl to Seattle/Tacoma Intl are usually found in October or February, booked 83 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 September 11, 2025.

Round-trip from

$332
(United Airlines)

One-way from

$175
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$545
From San José Juan Santamaria Intl to Seattle/Tacoma Intl
Search Deals
One-way flight from San José Juan Santamaria Intl to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 September 11, 2025.

This Delta deal was found by Cheapflights users on 9/9. 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.
Wed 10/221:23 pmSJO - SEA
1 stop11h 31mDelta
Tue 10/283:45 pmSEA - SJO
1 stop19h 13mDelta
Deal found 9/9$332
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Tue 10/78:37 amSJO - SEA
1 stop11h 08mUnited Airlines
Wed 10/1511:10 pmSEA - SJO
1 stop12h 16mUnited Airlines
Deal found 9/11$341
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/271:11 amSJO - SEA
1 stop12h 51mAlaska Airlines
Mon 11/310:20 amSEA - SJO
1 stop12h 18mAlaska Airlines
Deal found 9/10$349
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 10/247:55 amSJO - SEA
1 stop16h 20mUnited Airlines
Sat 11/111:59 pmSEA - SJO
1 stop10h 26mUnited Airlines
Deal found 9/10$350
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/271:11 amSJO - SEA
1 stop14h 37mAlaska Airlines
Tue 11/45:20 amSEA - SJO
2 stops17h 18mAlaska Airlines
Deal found 9/10$353
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/108:37 amSJO - SEA
1 stop30h 47mUnited Airlines
Fri 10/177:00 amSEA - SJO
2 stops28h 26mUnited Airlines
Deal found 9/9$354
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 10/158:37 amSJO - SEA
1 stop11h 08mUnited Airlines
Wed 11/511:59 pmSEA - SJO
1 stop9h 26mUnited Airlines
Deal found 9/11$359
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 11/226:22 amSJO - SEA
1 stop20h 36mAmerican Airlines
Sat 12/61:04 amSEA - SJO
1 stop19h 24mAmerican Airlines
Deal found 9/10$367
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 11/111:35 amSJO - SEA
1 stop12h 11mUnited Airlines
Sat 11/151:20 pmSEA - SJO
2 stops20h 05mUnited Airlines
Deal found 9/10$368
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/271:11 amSJO - SEA
1 stop14h 37mAlaska Airlines
Thu 11/69:15 pmSEA - SJO
1 stop25h 23mAlaska Airlines
Deal found 9/10$369

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 September 11, 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

Wed 10/1

7:55 am-11:15 pm

2 stops16h 20m

Seattle/Tacoma Intl

Tue 10/7

5:31 pm-7:15 am

1 stop12h 44m

$332

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Wed 10/22

1:23 pm-11:54 pm

1 stop11h 31m

Seattle/Tacoma Intl

Wed 10/29

3:45 pm-11:58 am

1 stop19h 13m

$332

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Tue 10/28

1:11 am-1:02 pm

1 stop12h 51m

Seattle/Tacoma Intl

Mon 11/3

10:20 am-12:38 am

1 stop12h 18m

$349

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Mon 10/27

1:11 am-1:02 pm

1 stop12h 51m

Seattle/Tacoma Intl

Mon 11/3

10:20 am-12:38 am

1 stop12h 18m

$349

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Fri 10/24

1:30 pm-11:15 pm

1 stop10h 45m

Seattle/Tacoma Intl

Wed 11/5

2:40 pm-11:25 am

2 stops18h 45m

$350

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Tue 10/28

8:40 am-6:25 pm

1 stop10h 45m

Seattle/Tacoma Intl

Thu 11/6

5:20 pm-1:15 pm

2 stops17h 55m

$350

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Fri 10/24

1:30 pm-11:15 pm

1 stop10h 45m

Seattle/Tacoma Intl

Sat 11/1

2:41 pm-11:25 am

2 stops19h 44m

$350

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Tue 10/28

7:45 am-12:59 am

2 stops18h 14m

Seattle/Tacoma Intl

Sun 11/2

11:59 pm-1:15 pm

1 stop11h 16m

$350

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Wed 10/29

1:20 pm-10:46 pm

1 stop10h 26m

Seattle/Tacoma Intl

Sat 11/1

11:59 pm-11:25 am

1 stop10h 26m

$350

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Wed 10/22

1:30 pm-11:15 pm

1 stop10h 45m

Seattle/Tacoma Intl

Sun 11/2

11:59 pm-11:25 am

1 stop9h 26m

$350

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 19 results
1
2

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, San José Province 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 August 29, 2025.

Booking 83 days in advance of your planned departure date is, on average, the best time to get cheap flights from San José, San José Province to Seattle. 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 San José, San José Province to Seattle?

Currently, January is the cheapest month in which you can book a flight from San José, San José Province to Seattle (average of $238). Flying from San José, San José Province to Seattle in June is currently the most expensive (average of $388). 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 September 11, 2025.

It’s typically best to fly out from San José, San José Province to Seattle in the morning. Doing so could potentially save you 9% on the flight price compared to flying at noon, 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 September 11, 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
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

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
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

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, San José Province to Seattle?

    There are many flights that can get you from San José, San José Province to Seattle in 11h 31m. Fly via United Airlines, Delta, or Alaska Airlines to get the fastest option. The distance between San José, San José Province and 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, San José Province to Seattle round-trip?

    Flying on American Airlines is currently your cheapest option to Seattle, with prices starting at $429. Additional round-trip tickets that might be worth considering are offered by United Airlines and Alaska Airlines, with the lowest prices starting at $445 and $447, respectively. American Airlines is 25% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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, San José Province to Seattle?

    Currently, January is the cheapest month in which you can book a flight from San José, San José Province to Seattle (average of $238). Flying from San José, San José Province to Seattle in June is currently the most expensive (average of $388). 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
Lacey
Renton
Olympia
Kent
Federal Way
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
San José to Spokane flights
Liberia to Portland 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$429Average$597FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$445Average$531FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$447Average$673FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.