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San José

$140+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 October or September, booked 75 days in advance, depart on a Tuesday or Monday and return on a Tuesday

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 December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/15. 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.
Mon 12/157:34 pmSEA - SJO
1 stop10h 58mUnited Airlines
Mon 12/226:40 amSJO - SEA
1 stop11h 44mUnited Airlines
Deal found 12/15$449
This American Airlines deal was found by Cheapflights users on 12/15. 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 12/1510:07 pmSEA - SJO
1 stop11h 45mAmerican Airlines
Fri 12/196:20 amSJO - SEA
1 stop19h 22mAmerican Airlines
Deal found 12/15$475
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:02 amSEA - SJO
1 stop14h 58mUnited Airlines
Wed 12/246:30 amSJO - SEA
2 stops13h 36mUnited Airlines
Deal found 12/16$477
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:02 amSEA - SJO
1 stop14h 58mUnited Airlines
Wed 12/316:30 amSJO - SEA
2 stops20h 29mUnited Airlines
Deal found 12/17$490
This Southwest deal was found by Cheapflights users on 12/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/152:20 pmSEA - SJO
2 stops20h 55mSouthwest
Fri 12/199:00 amSJO - SEA
2 stops17h 55mSouthwest
Deal found 12/15$493
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:02 amSEA - SJO
1 stop14h 58mUnited Airlines
Tue 12/232:20 pmSJO - SEA
1 stop10h 32mUnited Airlines
Deal found 12/16$522
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/171:40 pmSEA - SJO
1 stop21h 16mUnited Airlines
Thu 12/256:30 amSJO - SEA
1 stop15h 14mUnited Airlines
Deal found 12/17$543

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$375
(Avianca)

One-way from

$140
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$766
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. 5% potential increase in price ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 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 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 December 18, 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

Thu 1/22

7:00 am-8:39 pm

1 stop11h 39m

San José Juan Santamaria Intl

Sat 1/31

6:40 am-6:28 pm

2 stops13h 48m

$380

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 3/5

6:45 am-10:32 pm

1 stop13h 47m

San José Juan Santamaria Intl

Wed 3/18

8:40 am-6:40 pm

1 stop11h 00m

$412

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 2/24

6:05 am-10:02 pm

1 stop13h 57m

San José Juan Santamaria Intl

Thu 2/26

7:00 am-11:12 pm

1 stop18h 12m

$449

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 2/20

6:05 am-10:02 pm

1 stop13h 57m

San José Juan Santamaria Intl

Sat 2/28

8:25 am-8:30 pm

1 stop14h 05m

$449

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 2/19

6:05 am-10:02 pm

1 stop13h 57m

San José Juan Santamaria Intl

Thu 2/26

7:00 am-11:12 pm

1 stop18h 12m

$449

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 1/19

6:15 am-10:15 pm

1 stop14h 00m

San José Juan Santamaria Intl

Thu 1/29

2:31 pm-10:07 am

1 stop21h 36m

$449

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 1/11

7:30 pm-8:32 am

1 stop11h 02m

San José Juan Santamaria Intl

Sat 1/31

6:40 am-11:47 pm

1 stop19h 07m

$486

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 1/8

7:00 am-8:39 pm

1 stop11h 39m

San José Juan Santamaria Intl

Sun 1/18

9:40 am-6:27 pm

1 stop10h 47m

$486

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sat 1/17

12:40 pm-12:56 pm

2 stops22h 16m

San José Juan Santamaria Intl

Thu 1/29

8:45 am-10:59 pm

1 stop16h 14m

$486

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 1/9

12:35 pm-8:32 am

1 stop17h 57m

San José Juan Santamaria Intl

Thu 1/22

9:40 am-12:59 am

1 stop17h 19m

$486

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 19 results
1
2

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 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
OvagoPrice Accuracy2 starsTrust Score*2 stars
Trip.comPrice 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 Seattle-San José flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-San José flight deals on Cheapflights vs. eDreams >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 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 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?

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 December 12, 2025.

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 75 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, May is the cheapest month in which you can book a flight from Seattle to San José (average of $188). Flying from Seattle to San José in July is currently the most expensive (average of $502). 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 December 18, 2025.

It’s typically best to fly out from Seattle to San José at noon. Doing so could potentially save you 4% 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 December 18, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta 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
11,477 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

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
11,477 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

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.
Southwest
7.9
Good
4,250 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

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
7.9
Good
8,005 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

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
9,091 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

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
11,054 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Entertainment

7.0

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

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?

    A quick flight from Seattle to San José can take about 11h 39m. United Airlines provides one of the quickest options available for as low as $380. Airlines will cover a distance of 3405 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Flying on Avianca is currently your cheapest option to San José, with prices starting at $152. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $280 and $397, respectively. These flights start at 75% 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 $161. Users have also found prices from $186 and $199 on American Airlines and Delta, 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 Dallas. Dallas is followed by Houston 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 Dallas?

    Dallas travelers tend to visit American Airlines Center, Dallas World Aquarium, and Dos Equis Pavilion more than anywhere else. Travelers on a layover in Dallas can visit American Airlines Center, Dallas World Aquarium, and Dos Equis Pavilion, by traveling 15.0 mi, 15.5 mi, and 18.3 mi, respectively after landing at Dallas/Fort Worth. Those on a layover in Dallas in need of a rental car can book one at Dallas/Fort Worth for about $50.

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

    The majority of Houston visitors 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 can be accessed by traveling approximately 33.5 mi, 16.1 mi, and 15.5 mi, respectively from Houston George Bush Intcntl. Travelers in need of a car in Houston can rent one for about $37 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, May is the cheapest month in which you can book a flight from Seattle to San José (average of $188). Flying from Seattle to San José in July is currently the most expensive (average of $502). 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
Manuel Antonio
Alajuela
Monteverde
Jacó
Heredia
Dominical

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Top 7 airlines flying from Seattle to San José

Discover the top 7 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$152Average$192FlexibilityNo cancel feeOn-time71%
DeltaCheapest$280Average$647FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$398Average$603FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$401Average$600FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$413Average$633FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$568Average$725FlexibilityNo cancel feeOn-time63%
AeromexicoCheapest$809Average$981FlexibilityNo cancel feeOn-timeN/A

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