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San José

$176+ Cheap flights from Seattle (SEA) to San José (SJO)

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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Aug 10 — Aug 171
Mon 8/10
Mon 8/17
1 adult, Economy
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Cheap flight deals from Seattle to San José

Cheapest flights from Seattle to San José
Explore the most affordable flight options available from Seattle to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2026.

This American Airlines deal was found by Cheapflights users on 7/7. 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.
Sun 10/255:38 pm
SEA
-
SJO
1 stop19h 22m
American Airlines
Fri 10/301:00 pm
SJO
-
SEA
1 stop12h 10m
American Airlines
Deal found 7/7$394
This American Airlines deal was found by Cheapflights users on 7/7. 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 9/236:15 am
SEA
-
SJO
2 stops12h 52m
American Airlines
Thu 10/16:00 am
SJO
-
SEA
2 stops16h 05m
American Airlines
Deal found 7/7$399
This American Airlines deal was found by Cheapflights users on 7/7. 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 9/235:34 pm
SEA
-
SJO
1 stop19h 23m
American Airlines
Fri 10/26:00 am
SJO
-
SEA
1 stop18h 52m
American Airlines
Deal found 7/7$424
This American Airlines deal was found by Cheapflights users on 7/8. 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 11/1411:59 pm
SEA
-
SJO
1 stop12h 11m
American Airlines
Sun 11/226:22 am
SJO
-
SEA
1 stop18h 43m
American Airlines
Deal found 7/8$429
This American Airlines deal was found by Cheapflights users on 7/8. 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 10/65:38 pm
SEA
-
SJO
1 stop19h 22m
American Airlines
Mon 10/191:00 pm
SJO
-
SEA
1 stop21h 33m
American Airlines
Deal found 7/8$435
This American Airlines deal was found by Cheapflights users on 7/8. 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 9/115:30 am
SEA
-
SJO
2 stops13h 37m
American Airlines
Fri 9/181:00 pm
SJO
-
SEA
1 stop21h 23m
American Airlines
Deal found 7/8$439
This American Airlines deal was found by Cheapflights users on 7/7. 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 10/145:38 pm
SEA
-
SJO
1 stop19h 22m
American Airlines
Sun 10/251:00 pm
SJO
-
SEA
1 stop12h 10m
American Airlines
Deal found 7/7$459
This American Airlines deal was found by Cheapflights users on 7/8. 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 9/312:40 am
SEA
-
SJO
1 stop12h 12m
American Airlines
Fri 9/111:00 pm
SJO
-
SEA
1 stop21h 23m
American Airlines
Deal found 7/8$472
This KAYAK deal was found by Cheapflights users on 7/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:59 am
SEA
-
SJO
2 stops17h 56m
GOL
Wed 11/181:09 pm
SJO
-
SEA
2 stops13h 49m
GOL
Deal found 7/7$473

Find flight deals from Seattle to San José

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to San José (SJO). 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 July 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$399
(American Airlines)

One-way from

$176
(American Airlines)

Popular in

April

Cheapest in

October

Average price

$758
Provider with most accurate pricing for Seattle/Tacoma Intl-San José Juan Santamaria Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San José Juan Santamaria Intl flights.
Search Deals
From Seattle/Tacoma Intl to San José Juan Santamaria Intl
Search Deals
One-way flight from Seattle/Tacoma Intl to San José Juan Santamaria Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($83 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to San José 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 July 11, 2026.
Use the filters below to find and compare flights from Seattle to San José that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 11/10

2:00 pm-1:15 pm

2 stops21h 15m

San José Juan Santamaria Intl

Tue 11/24

2:10 pm-1:00 am

2 stops12h 50m

$554

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 11/8

8:40 pm-11:25 am

2 stops12h 45m

San José Juan Santamaria Intl

Sat 11/14

2:25 pm-10:55 pm

1 stop10h 30m

$558

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 10/9

7:11 am-7:37 pm

1 stop11h 26m

San José Juan Santamaria Intl

Sat 10/17

8:45 am-6:44 pm

1 stop10h 59m

$558
Quickest round-trip

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sat 8/22

11:59 pm-12:21 pm

1 stop11h 22m

San José Juan Santamaria Intl

Thu 12/10

2:20 pm-10:38 pm

1 stop10h 18m

$558

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 8/23

11:59 pm-12:21 pm

1 stop11h 22m

San José Juan Santamaria Intl

Sat 8/29

8:45 am-6:29 pm

1 stop10h 44m

$558

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sat 8/22

7:00 am-7:37 pm

1 stop11h 37m

San José Juan Santamaria Intl

Sat 8/29

8:45 am-6:29 pm

1 stop10h 44m

$558

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Wed 9/23

9:00 am-7:15 am

1 stop21h 15m

San José Juan Santamaria Intl

Thu 10/8

1:25 pm-10:45 pm

1 stop10h 20m

$669

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 1/3

5:00 am-10:32 pm

1 stop15h 32m

San José Juan Santamaria Intl

Sat 1/16

6:40 am-9:12 pm

2 stops16h 32m

$678

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 9/7

11:59 pm-12:21 pm

1 stop11h 22m

San José Juan Santamaria Intl

Mon 9/14

7:55 am-9:36 pm

1 stop14h 41m

$678

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 10/4

7:11 am-7:37 pm

1 stop11h 26m

San José Juan Santamaria Intl

Sun 10/11

8:45 am-6:44 pm

1 stop10h 59m

$678

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/6

Showing 1-10 of 22 resultsSorted by cheapest first
1
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3

Compare providers for flights from Seattle to San José

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 Seattle to San José in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 Seattle-San José flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-San José flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-San José flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-San José 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 Seattle-San José 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 Seattle to San José

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

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

The price you pay for your flight from Seattle to San José may vary depending on when you book. For the best chance of a lower fare, look to book 74 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 Seattle to San José?

Currently, October is the cheapest month in which you can book a flight from Seattle to San José (average of $497). Flying from Seattle to San José in April is currently the most expensive (average of $782). 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 Seattle to San José?

Reviews of airlines servicing San José

Get insights into the airlines that provide service to San José. 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 San José. Reviews last updated July 11, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Seattle to San José have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,657 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle
Alaska Airlines
7.9
Good
12,657 reviews
Alaska Airlines
7.9
Good
12,657 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle
Delta
7.8
Good
8,459 reviews
Alaska Airlines
7.9
Good
12,657 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle
United Airlines
7.4
Good
9,977 reviews
Alaska Airlines
7.9
Good
12,657 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle
American Airlines
7.1
Good
11,807 reviews
Alaska Airlines
7.9
Good
12,657 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle
JetBlue
7.1
Good
3,016 reviews
Alaska Airlines
7.9
Good
12,657 reviews

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

SEA - LHR

Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle

Related info for your journey

Find useful and relevant information for your journey from Seattle to San José. 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 Seattle to San José?

    A quick flight from Seattle to San José can take about 12h 52m. American Airlines provides one of the quickest options available for as low as $399. Airlines will cover a distance of 3405 mi.

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

    Flying on Delta is currently your cheapest option to San José, with prices starting at $345. Additional round-trip tickets that might be worth considering are offered by JetBlue and Alaska Airlines, with the lowest prices starting at $362 and $386, respectively. These flights start at 47% lower than the current average price 3 months from now.

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

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $168. Users have also found prices from $177 and $185 on Southwest and United Airlines, respectively.

  • Where are the most common layover locations when flying from Seattle to San José?

    The most popular layover on flights from Seattle to San José is Houston. Houston is followed by Dallas in terms of the most popular layover location on flights from Seattle to San José.

  • What are some popular things to do or see while on a layover in Houston?

    Houston travelers tend to visit Space Center Houston, House of Blues Houston, and Bayou Music Center more than anywhere else. Travelers on a layover in Houston can visit Space Center Houston, House of Blues Houston, and Bayou Music Center, by traveling 33.5 mi, 16.1 mi, and 15.5 mi, respectively after landing at Houston George Bush Intcntl. Those on a layover in Houston in need of a rental car can book one at Houston George Bush Intcntl for about $41.

  • What are some popular points of interest to see during a layover in Dallas?

    The majority of Dallas visitors spend their time at American Airlines Center, Dallas World Aquarium, and Reunion Tower. American Airlines Center, Dallas World Aquarium, and Reunion Tower can be accessed by traveling approximately 15.0 mi, 15.5 mi, and 15.6 mi, respectively from Dallas/Fort Worth. Travelers in need of a car in Dallas can rent one for about $57 per day.

  • Where are the least popular layover locations for Seattle to San José flights?

    Seattle to San José flights have a layover in Los Angeles the least frequently.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Seattle to San José (average of $497). Flying from Seattle to San José in April is currently the most expensive (average of $782). 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 San José?

Book flights to San José if you plan to visit one of these locations
Alajuela
Jacó
Heredia
Dominical
Manuel Antonio

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Top 6 airlines flying from Seattle to San José

Discover the top 6 airlines that operate flights from Seattle to San José. 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 July 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$345Average$751FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$362Average$682FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$386Average$616FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$391Average$621FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$394Average$665FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$516Average$755FlexibilityNo cancel feeOn-time63%

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