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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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — SEA
feb. 26 — mar. 51
jue. 2/26
jue. 3/5
1 adult, Economy
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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 enero 27, 2026.

This Avianca deal was found by Cheapflights users on 1/26. 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.
sáb. 8/295:45 am
SJO
-
SEA
2 stops13h 12m
Multiple Airlines
sáb. 9/57:00 am
SEA
-
SJO
2 stops15h 15m
Multiple Airlines
Deal found 1/26$337
This Avianca deal was found by Cheapflights users on 1/27. 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.
lun. 5/45:05 am
SJO
-
SEA
2 stops13h 33m
Multiple Airlines
mar. 5/127:40 am
SEA
-
SJO
2 stops14h 35m
Multiple Airlines
Deal found 1/27$351
This Avianca deal was found by Cheapflights users on 1/25. 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.
mié. 4/225:05 am
SJO
-
SEA
2 stops13h 33m
Multiple Airlines
lun. 4/277:06 pm
SEA
-
SJO
2 stops12h 39m
Multiple Airlines
Deal found 1/25$353
This Trip.com deal was found by Cheapflights users on 1/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/175:45 am
SJO
-
SEA
2 stops15h 20m
Multiple Airlines
jue. 9/248:00 am
SEA
-
SJO
2 stops14h 15m
Multiple Airlines
Deal found 1/27$358
This Avianca deal was found by Cheapflights users on 1/27. 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.
jue. 4/235:45 am
SJO
-
SEA
2 stops13h 55m
Multiple Airlines
dom. 5/37:15 pm
SEA
-
SJO
2 stops12h 30m
Multiple Airlines
Deal found 1/27$360
This American Airlines deal was found by Cheapflights users on 1/25. 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.
lun. 2/96:00 am
SJO
-
SEA
1 stop19h 49m
American Airlines
lun. 2/1612:07 am
SEA
-
SJO
1 stop18h 05m
American Airlines
Deal found 1/25$366
This American Airlines deal was found by Cheapflights users on 1/26. 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.
mar. 3/1710:25 am
SJO
-
SEA
1 stop14h 15m
American Airlines
mar. 3/2411:59 pm
SEA
-
SJO
1 stop12h 56m
American Airlines
Deal found 1/26$371
This eDestinos deal was found by Cheapflights users on 1/26. 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.
mar. 2/246:00 am
SJO
-
SEA
1 stop14h 57m
Multiple Airlines
mar. 3/36:10 am
SEA
-
SJO
1 stop15h 05m
Multiple Airlines
Deal found 1/26$373
This eDestinos deal was found by Cheapflights users on 1/26. 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.
mié. 5/64:35 pm
SJO
-
SEA
1 stop30h 28m
Multiple Airlines
lun. 5/189:15 pm
SEA
-
SJO
1 stop25h 00m
Multiple Airlines
Deal found 1/26$375

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 enero 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$353
(Avianca)

One-way from

$180
(Trip.com)

Popular in

June

Cheapest in

October

Average price

$607
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. 3% potential increase in price ($16 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 January 2026
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 enero 27, 2026.
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

mié. 3/11

6:00 am-11:04 pm

1 stop18h 04m

Seattle/Tacoma Intl

mar. 3/17

12:59 am-9:43 pm

1 stop19h 44m

$360

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

mar. 2/24

4:15 pm-7:58 pm

2 stops29h 43m

Seattle/Tacoma Intl

mar. 3/3

6:10 am-11:15 pm

2 stops15h 05m

$404

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

mar. 2/24

6:00 am-6:57 pm

2 stops14h 57m

Seattle/Tacoma Intl

jue. 3/5

7:15 am-11:15 pm

2 stops14h 00m

$406

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

mié. 3/4

1:27 am-4:57 pm

2 stops17h 30m

Seattle/Tacoma Intl

lun. 3/9

7:45 am-12:08 am

2 stops15h 23m

$414

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

mié. 4/8

11:35 pm-10:51 am

1 stop12h 16m

Seattle/Tacoma Intl

sáb. 4/18

11:26 pm-1:08 pm

2 stops12h 42m

$418

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

mié. 2/25

5:30 am-10:55 am

2 stops31h 25m

Seattle/Tacoma Intl

mié. 3/4

3:50 pm-11:13 pm

2 stops29h 23m

$422

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

mié. 4/8

11:35 pm-9:35 am

1 stop11h 00m

Seattle/Tacoma Intl

lun. 4/13

2:05 pm-1:22 pm

1 stop22h 17m

$423

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

mar. 3/24

6:00 am-11:04 pm

1 stop18h 04m

Seattle/Tacoma Intl

mié. 4/8

5:43 am-9:36 pm

1 stop14h 53m

$430

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

mié. 3/4

1:27 am-4:57 pm

2 stops17h 30m

Seattle/Tacoma Intl

dom. 3/8

2:43 pm-12:08 am

2 stops32h 25m

$439

San JoséSeattle

SJO - SEA

SJOSEA

San José Juan Santamaria Intl

mié. 3/11

4:15 pm-8:00 pm

2 stops28h 45m

Seattle/Tacoma Intl

mié. 3/18

8:08 pm-11:15 pm

2 stops26h 07m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 21 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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 January 23, 2026.

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 June is currently the most expensive (average of $479). 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.

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 enero 27, 2026.
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
11,795 reviews

Entertainment

7.0

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
8.0
Very good
11,795 reviews
Alaska Airlines
8.0
Very good
11,795 reviews

Entertainment

7.0

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
United Airlines
7.4
Good
9,205 reviews
Alaska Airlines
8.0
Very good
11,795 reviews

Entertainment

7.0

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
American Airlines
7.2
Good
11,197 reviews
Alaska Airlines
8.0
Very good
11,795 reviews

Entertainment

7.0

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

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 17h 30m. American Airlines provides one of the quickest options available for as low as $414. 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 $398, 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 $447, respectively. These flights start at 26% 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 $182. Alaska Airlines flights start at $187 while deals on Delta start at $198 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 June is currently the most expensive (average of $479). 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
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Renton
Puyallup
Kirkland
Kent
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

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 enero 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$398Average$603FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$426Average$520FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$447Average$602FlexibilityNo cancel feeOn-time75%

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