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$152+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San José Juan Santamaria Intl are usually found in September or October, booked 69 days in advance, depart on a Tuesday or Monday and return on a Tuesday

Cheap 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 September 17, 2025.

Round-trip from

$323
(Southwest)

One-way from

$152
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$514
From Seattle/Tacoma Intl to San José Juan Santamaria Intl
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One-way flight from Seattle/Tacoma Intl to San José Juan Santamaria Intl
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Highest demand for flights based on searches. 11% potential increase in price ($87 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 17, 2025.

This Southwest deal was found by Cheapflights users on 9/16. 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.
Fri 11/145:55 pmSEA - SJO
2 stops17h 50mSouthwest
Wed 11/199:00 amSJO - SEA
2 stops15h 55mSouthwest
Deal found 9/16$323
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 10/68:49 pmSEA - SJO
1 stop15h 49mAmerican Airlines
Wed 10/151:00 pmSJO - SEA
1 stop11h 41mAmerican Airlines
Deal found 9/15$336
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/17:37 pmSEA - SJO
1 stop10h 38mUnited Airlines
Wed 10/158:37 amSJO - SEA
1 stop11h 08mUnited Airlines
Deal found 9/15$346
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Tue 10/288:05 amSEA - SJO
1 stop14h 46mMultiple Airlines
Mon 11/102:20 amSJO - SEA
2 stops35h 53mMultiple Airlines
Deal found 9/15$347
This SmartFares deal was found by Cheapflights users on 9/17. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/96:25 amSEA - SJO
1 stop16h 13mAlaska Airlines
Thu 11/131:55 amSJO - SEA
1 stop13h 07mAlaska Airlines
Deal found 9/17$348
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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.
Sun 10/267:15 amSEA - SJO
1 stop15h 36mAlaska Airlines
Thu 10/301:11 amSJO - SEA
1 stop16h 45mAlaska Airlines
Deal found 9/17$353
This SmartFares deal was found by Cheapflights users on 9/17. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/85:30 pmSEA - SJO
1 stop29h 08mAlaska Airlines
Thu 11/131:55 amSJO - SEA
1 stop13h 07mAlaska Airlines
Deal found 9/17$355
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/228:49 pmSEA - SJO
1 stop15h 49mAmerican Airlines
Thu 10/301:05 pmSJO - SEA
1 stop11h 30mAmerican Airlines
Deal found 9/17$356
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 10/278:00 amSEA - SJO
2 stops14h 51mAlaska Airlines
Mon 11/31:55 amSJO - SEA
2 stops18h 53mAlaska Airlines
Deal found 9/17$357
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 10/288:05 amSEA - SJO
1 stop14h 46mAlaska Airlines
Sun 11/91:55 amSJO - SEA
1 stop11h 11mAlaska Airlines
Deal found 9/15$358

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 September 17, 2025.
Use the filters below to find and compare flights from Seattle to San José that are best for you.

Fly from

Seattle

Fly to

San José

Route

Depart

Return

Price

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 9/30

5:31 pm-7:15 am

1 stop12h 44m

San José Juan Santamaria Intl

Tue 10/7

7:55 am-9:15 pm

2 stops14h 20m

$350

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 10/26

6:25 am-11:51 pm

1 stop16h 26m

San José Juan Santamaria Intl

Thu 10/30

1:11 am-2:46 pm

2 stops14h 35m

$357

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 11/14

6:00 am-10:07 pm

1 stop14h 07m

San José Juan Santamaria Intl

Wed 11/19

7:00 am-5:14 pm

1 stop12h 14m

$370

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 11/4

7:28 pm-8:32 am

1 stop11h 04m

San José Juan Santamaria Intl

Mon 11/10

9:40 am-8:51 pm

1 stop13h 11m

$370

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 11/10

5:20 am-12:38 am

2 stops17h 18m

San José Juan Santamaria Intl

Mon 11/17

1:55 am-6:48 pm

2 stops18h 53m

$374

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sat 11/1

5:30 pm-12:38 am

1 stop30h 08m

San José Juan Santamaria Intl

Fri 11/7

1:55 am-9:02 pm

1 stop21h 07m

$377

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sat 11/8

7:40 pm-12:38 am

2 stops26h 58m

San José Juan Santamaria Intl

Thu 11/13

1:55 am-8:39 am

2 stops32h 44m

$399

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 10/23

11:15 pm-7:00 pm

2 stops42h 45m

San José Juan Santamaria Intl

Wed 10/29

1:11 am-1:02 pm

1 stop12h 51m

$414

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Wed 11/12

8:00 am-12:38 am

2 stops14h 38m

San José Juan Santamaria Intl

Sat 11/15

1:55 am-2:43 pm

2 stops14h 48m

$416

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 11/14

5:20 am-12:38 am

2 stops17h 18m

San José Juan Santamaria Intl

Tue 11/18

1:55 am-2:46 pm

2 stops14h 51m

$416

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 22 results
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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, San José Province?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to San José. Price data was last updated on September 12, 2025.

The best time to book flights from Seattle to San José, San José Province is 69 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, September is the cheapest month in which you can book a flight from Seattle to San José, San José Province (average of $398). Flying from Seattle to San José, San José Province in March is currently the most expensive (average of $554). 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 SEA to SJO?

Find hourly flight availability from Seattle to San José. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

It’s typically best to fly out from Seattle to San José, San José Province at noon. Doing so could potentially save you 6% on the flight price compared to flying in the morning, which is usually more expensive.

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 September 17, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Aeromexico 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
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Aeromexico
7.5
Good
1,696 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
United Airlines
7.4
Good
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

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, San José Province?

    Departing from Seattle to San José, San José Province will take you 12h 44m. Airlines will cover a distance of 3405 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Avianca, at $152, was found to be the cheapest airline from Seattle to San José, San José Province.Alternate airlines to your destination round-trip include Spirit Airlines and Copa Airlines. You may be able to fly from Seattle to San José, San José Province for 76% less than the average price by searching for these airlines.

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

    The cheapest airlines for a one-way flight from Seattle to San José, San José Province are American Airlines ($154), United Airlines ($157), and Delta ($169).

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

    Most of the time, Seattle to San José, San José Province flights that have layovers will stop in Dallas. Houston sees the second most layovers for non-direct flights flying from Seattle to San José, San José Province.

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

    Dallas travelers tend to visit American Airlines Center, Dallas World Aquarium, and Dos Equis Pavilion more than anywhere else. Those on a layover in Dallas interested in visiting American Airlines Center, Dallas World Aquarium, or Dos Equis Pavilion can do so by traveling 15.0 mi, 15.5 mi, and 18.3 mi, respectively from Dallas/Fort Worth. Travelers can rent a car at Dallas/Fort Worth for an average daily rate of $48 to make sightseeing during their layover a little easier.

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

    Most Houston visitors opt to spend their time at Space Center Houston, House of Blues Houston, and Revention Music Center. Space Center Houston, House of Blues Houston, and Revention Music Center are located about 33.5 mi, 16.1 mi, and 15.5 mi, respectively from Houston George Bush Intcntl. Those looking to explore during their layover in Houston can rent a car from Houston George Bush Intcntl for about $34 per day.

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

    Seattle to San José, San José Province flights have a layover in Miami least often. Los Angeles sees the next fewest layovers on Seattle to San José, San José Province flights.

  • 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, San José Province?

    Currently, September is the cheapest month in which you can book a flight from Seattle to San José, San José Province (average of $398). Flying from Seattle to San José, San José Province in March is currently the most expensive (average of $554). 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
Heredia
Manuel Antonio
Alajuela
Monteverde
Jacó

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Top 9 airlines flying from Seattle to San José

Discover the top 9 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$152Average$217FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$308Average$387FlexibilityNo cancel feeOn-time65%
Copa AirlinesCheapest$423Average$783FlexibilityNo cancel feeOn-time70%
Alaska AirlinesCheapest$431Average$614FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$448Average$617FlexibilityNo cancel feeOn-time71%
DeltaCheapest$486Average$688FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$489Average$686FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$543Average$661FlexibilityNo cancel feeOn-time63%
AeromexicoCheapest$709Average$987FlexibilityNo cancel feeOn-timeN/A

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