HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San José

$142+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to San José with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San José Juan Santamaria Intl are usually found in September or October, booked 34 days in advance, depart on a Tuesday or Monday and return on a Tuesday

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 October 27, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/24. 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.
Thu 12/411:01 amSEA - SJO
2 stops36h 19mMultiple Airlines
Fri 12/121:30 amSJO - SEA
1 stop14h 00mMultiple Airlines
Deal found 10/24$377
This Avianca deal was found by Cheapflights users on 10/24. 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.
Mon 11/38:44 amSEA - SJO
2 stops21h 01mMultiple Airlines
Fri 11/75:00 amSJO - SEA
2 stops13h 56mMultiple Airlines
Deal found 10/24$384
This Trip.com deal was found by Cheapflights users on 10/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/98:40 amSEA - SJO
1 stop17h 10mMultiple Airlines
Tue 12/165:10 pmSJO - SEA
1 stop19h 25mMultiple Airlines
Deal found 10/25$389
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/159:08 amSEA - SJO
1 stop13h 30mMultiple Airlines
Mon 11/172:20 amSJO - SEA
2 stops21h 53mMultiple Airlines
Deal found 10/25$402
This Kiwi.com deal was found by Cheapflights users on 10/24. 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.
Mon 11/37:57 pmSEA - SJO
1 stop26h 41mMultiple Airlines
Mon 11/102:20 amSJO - SEA
2 stops35h 47mMultiple Airlines
Deal found 10/24$405
This Avianca deal was found by Cheapflights users on 10/24. 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.
Mon 11/38:44 amSEA - SJO
2 stops21h 01mMultiple Airlines
Thu 11/66:00 amSJO - SEA
2 stops15h 58mMultiple Airlines
Deal found 10/24$408
This Alaska Airlines deal was found by Cheapflights users on 10/24. 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 11/1111:10 pmSEA - SJO
2 stops23h 28mAlaska Airlines
Mon 11/171:55 amSJO - SEA
2 stops14h 51mAlaska Airlines
Deal found 10/24$410
This Delta deal was found by Cheapflights users on 10/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/512:45 pmSEA - SJO
1 stop16h 15mDelta
Sun 12/218:30 amSJO - SEA
1 stop16h 30mDelta
Deal found 10/25$412
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Tue 11/115:05 amSEA - SJO
2 stops13h 34mUnited Airlines
Tue 11/1812:35 pmSJO - SEA
1 stop12h 11mUnited Airlines
Deal found 10/24$413
This United Airlines deal was found by Cheapflights users on 10/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/115:05 amSEA - SJO
2 stops13h 34mUnited Airlines
Sun 11/166:40 amSJO - SEA
1 stop11h 30mUnited Airlines
Deal found 10/25$414

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 October 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$373
(Trip.com)

One-way from

$142
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$512
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. 10% potential increase in price ($76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 27, 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 11/13

5:20 am-12:38 am

2 stops17h 18m

San José Juan Santamaria Intl

Tue 11/18

1:55 am-6:48 pm

2 stops18h 53m

$410

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 11/13

9:35 am-12:38 am

2 stops13h 03m

San José Juan Santamaria Intl

Mon 11/17

1:55 am-6:48 pm

2 stops18h 53m

$410

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

Tue 11/18

1:55 am-6:48 pm

2 stops18h 53m

$410

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Wed 11/12

8:05 am-12:38 am

1 stop14h 33m

San José Juan Santamaria Intl

Thu 11/20

1:45 am-10:56 am

2 stops35h 11m

$425

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 11/10

11:10 pm-12:38 am

2 stops23h 28m

San José Juan Santamaria Intl

Thu 11/13

1:55 am-11:32 pm

2 stops23h 37m

$431

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 11/7

5:05 am-10:00 pm

1 stop14h 55m

San José Juan Santamaria Intl

Thu 11/13

2:20 pm-10:46 pm

1 stop10h 26m

$444

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sat 12/6

7:05 am-11:48 pm

1 stop14h 43m

San José Juan Santamaria Intl

Mon 12/15

1:30 am-10:45 pm

2 stops23h 15m

$448

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 11/3

6:50 pm-12:38 am

1 stop27h 48m

San José Juan Santamaria Intl

Wed 11/5

1:55 am-7:58 pm

1 stop20h 03m

$482

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 11/13

3:42 pm-1:05 pm

1 stop19h 23m

San José Juan Santamaria Intl

Sat 11/22

8:26 am-8:56 pm

1 stop14h 30m

$486

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 1/11

7:28 pm-12:01 am

2 stops26h 33m

San José Juan Santamaria Intl

Fri 1/30

1:16 am-5:54 pm

2 stops18h 38m

$521

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/23

Showing 1-10 of 24 results
1
2
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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 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 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?

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 October 24, 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 34 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 $190). Flying from Seattle to San José in December is currently the most expensive (average of $532). 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 October 27, 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 October 27, 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
11,191 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

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
11,191 reviews
Alaska Airlines
8.0
Very good
11,191 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

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
8.0
Very good
4,235 reviews
Alaska Airlines
8.0
Very good
11,191 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

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
7,997 reviews
Alaska Airlines
8.0
Very good
11,191 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

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
8,999 reviews
Alaska Airlines
8.0
Very good
11,191 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

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
11,030 reviews
Alaska Airlines
8.0
Very good
11,191 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

8.0

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 17h 18m. Alaska Airlines provides one of the quickest options available for as low as $410. Airlines will cover a distance of 3405 mi.

  • 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 Alaska Airlines, with the lowest prices starting at $280 and $405, respectively. These flights start at 76% lower than the current average price 3 months from now.

  • 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 $57.

  • 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 Miami the least frequently. Seattle to San José flights stopping in Los Angeles are the next rarest.

  • 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 $190). Flying from Seattle to San José in December is currently the most expensive (average of $532). 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
Dominical

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 8 airlines flying from Seattle to San José

Discover the top 8 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 October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$152Average$217FlexibilityNo cancel feeOn-time71%
DeltaCheapest$280Average$651FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$405Average$612FlexibilityNo cancel feeOn-time75%
Copa AirlinesCheapest$423Average$785FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$434Average$641FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$442Average$615FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$568Average$678FlexibilityNo cancel feeOn-time63%
AeromexicoCheapest$782Average$981FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights