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$170+ 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — SEA
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Find cheap flights from San José to Seattle with Cheapflights

1. Tell us where you want to go

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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

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 December 4, 2025.

This United Airlines deal was found by Cheapflights users on 12/4. 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.
Mon 12/158:45 amSJO - SEA
2 stops16h 30mUnited Airlines
Mon 2/27:00 amSEA - SJO
1 stop11h 39mUnited Airlines
Deal found 12/4$400
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/256:30 amSJO - SEA
1 stop20h 04mUnited Airlines
Thu 1/17:12 pmSEA - SJO
1 stop11h 20mUnited Airlines
Deal found 12/3$401
This United Airlines deal was found by Cheapflights users on 12/4. 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 12/209:40 amSJO - SEA
1 stop17h 19mUnited Airlines
Sat 1/1012:35 pmSEA - SJO
1 stop17h 57mUnited Airlines
Deal found 12/4$409
This American Airlines deal was found by Cheapflights users on 12/3. 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 12/57:00 amSJO - SEA
2 stops14h 09mAmerican Airlines
Wed 12/109:00 amSEA - SJO
1 stop11h 28mAmerican Airlines
Deal found 12/3$418
This United Airlines deal was found by Cheapflights users on 12/4. 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 12/256:30 amSJO - SEA
2 stops18h 42mUnited Airlines
Mon 1/127:30 pmSEA - SJO
1 stop11h 02mUnited Airlines
Deal found 12/4$419
This United Airlines deal was found by Cheapflights users on 12/4. 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 12/109:40 amSJO - SEA
1 stop15h 35mUnited Airlines
Sat 1/246:48 amSEA - SJO
1 stop9h 28mUnited Airlines
Deal found 12/4$420
This American Airlines deal was found by Cheapflights users on 12/2. 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.
Wed 12/32:56 pmSJO - SEA
1 stop21h 43mAmerican Airlines
Wed 12/109:00 amSEA - SJO
1 stop11h 28mAmerican Airlines
Deal found 12/2$424
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/52:20 pmSJO - SEA
2 stops27h 09mUnited Airlines
Wed 12/105:05 pmSEA - SJO
2 stops25h 34mUnited Airlines
Deal found 12/3$429
This Expedia deal was found by Cheapflights users on 12/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:00 amSJO - SEA
2 stops16h 35mMultiple Airlines
Wed 12/102:43 pmSEA - SJO
2 stops23h 27mMultiple Airlines
Deal found 12/2$430
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/209:40 amSJO - SEA
1 stop17h 19mUnited Airlines
Sun 1/411:59 pmSEA - SJO
1 stop20h 33mUnited Airlines
Deal found 12/3$431

Find 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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$400
(United Airlines)

One-way from

$170
(American Airlines)

Popular in

June

Cheapest in

October

Average price

$610
Provider with most accurate pricing for San José Juan Santamaria Intl-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San José Juan Santamaria Intl-Seattle/Tacoma Intl flights.
Search Deals
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. 0% potential increase in price ($5 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 4, 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

Mon 12/15

8:45 am-11:15 pm

2 stops16h 30m

Seattle/Tacoma Intl

Mon 2/2

7:00 am-8:39 pm

1 stop11h 39m

$400

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Sat 12/20

9:40 am-12:59 am

1 stop17h 19m

Seattle/Tacoma Intl

Sat 1/10

12:35 pm-8:32 am

1 stop17h 57m

$409

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Wed 12/10

2:20 pm-10:47 pm

1 stop10h 27m

Seattle/Tacoma Intl

Sat 1/24

12:40 pm-12:56 pm

2 stops22h 16m

$420

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Sat 12/20

9:40 am-12:59 am

1 stop17h 19m

Seattle/Tacoma Intl

Sun 1/4

11:59 pm-10:32 pm

1 stop20h 33m

$431

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Mon 12/22

6:40 am-11:08 pm

1 stop18h 28m

Seattle/Tacoma Intl

Thu 1/8

2:10 pm-12:56 pm

1 stop20h 46m

$436

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Fri 12/19

5:00 am-6:18 pm

2 stops15h 18m

Seattle/Tacoma Intl

Mon 2/2

6:20 am-11:40 pm

2 stops15h 20m

$439

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Thu 12/25

6:30 am-11:12 pm

2 stops18h 42m

Seattle/Tacoma Intl

Sat 1/17

10:58 am-12:56 pm

1 stop23h 58m

$445

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Mon 12/8

9:40 am-6:32 pm

1 stop10h 52m

Seattle/Tacoma Intl

Tue 12/9

7:34 pm-8:32 am

1 stop10h 58m

$447

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Sun 12/7

6:00 am-11:25 pm

1 stop19h 25m

Seattle/Tacoma Intl

Sat 12/13

12:38 am-10:28 pm

1 stop19h 50m

$450

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

Mon 2/2

2:20 pm-9:12 pm

3 stops32h 52m

Seattle/Tacoma Intl

Fri 2/27

7:33 pm-8:39 pm

2 stops23h 06m

$450

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 19 results
1
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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 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

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San José-Seattle flight deals on Cheapflights vs. eDreams >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 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 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 November 28, 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 $361). Flying from San José to Seattle in July is currently the most expensive (average of $482). 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 December 4, 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.

How much does it cost to fly round-trip from San José 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 4, 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
11,398 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
Alaska Airlines
8.0
Very good
11,398 reviews
Alaska Airlines
8.0
Very good
11,398 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
United Airlines
7.4
Good
9,064 reviews
Alaska Airlines
8.0
Very good
11,398 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
American Airlines
7.2
Good
11,043 reviews
Alaska Airlines
8.0
Very good
11,398 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.

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 16h 30m. United Airlines provides one of the quickest options available for as low as $400. The distance from San José to Seattle is about 3405 mi.

  • 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 $426 and $431, respectively. These flights start at 27% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from San José to Seattle one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $197. Delta flights start at $198 while deals on Alaska Airlines start at $212 one-way.

  • 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 $361). Flying from San José to Seattle in July is currently the most expensive (average of $482). 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
Tacoma
SeaTac
Lakewood
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Kent
Tukwila
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$407Average$601FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$426Average$527FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$431Average$659FlexibilityNo cancel feeOn-time75%

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