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Cheap flights from Seattle to San José from C$ 367

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
31 May — 7 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to San José

Enter your travel dates to find the best prices.

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 1 May 2026.

Fri 15/59:15 p.m.
SEA
-
SJO
2 stops25h 00m
Multiple Airlines
Fri 22/54:35 p.m.
SJO
-
SEA
2 stops28h 06m
Multiple Airlines
Deal found 1/5C$ 655
Mon 24/85:30 a.m.
SEA
-
SJO
2 stops12h 10m
Southwest
Sat 29/89:30 a.m.
SJO
-
SEA
2 stops14h 25m
Southwest
Deal found 30/4C$ 720
Wed 27/59:15 p.m.
SEA
-
SJO
2 stops25h 00m
Multiple Airlines
Tue 16/61:06 a.m.
SJO
-
SEA
1 stop11h 46m
Multiple Airlines
Deal found 30/4C$ 739
Wed 29/75:00 a.m.
SEA
-
SJO
2 stops13h 40m
Southwest
Sat 29/89:30 a.m.
SJO
-
SEA
2 stops14h 25m
Southwest
Deal found 30/4C$ 764
Mon 4/55:35 p.m.
SEA
-
SJO
2 stops17h 35m
Southwest
Tue 19/59:00 a.m.
SJO
-
SEA
2 stops16h 10m
Southwest
Deal found 27/4C$ 765
Mon 12/108:00 p.m.
SEA
-
SJO
1 stop9h 00m
Southwest
Thu 22/1012:55 p.m.
SJO
-
SEA
1 stop13h 00m
Southwest
Deal found 26/4C$ 767
Mon 11/56:15 p.m.
SEA
-
SJO
2 stops16h 55m
Southwest
Thu 14/59:00 a.m.
SJO
-
SEA
2 stops16h 05m
Southwest
Deal found 27/4C$ 776
Tue 26/511:38 a.m.
SEA
-
SJO
1 stop10h 55m
Alaska Airlines
Mon 1/612:53 a.m.
SJO
-
SEA
1 stop13h 03m
Alaska Airlines
Deal found 27/4C$ 780

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 1 May 2026.

Round-trip from

C$ 655

One-way from

C$ 372

Popular in

April

Cheapest in

October

Average price

C$ 802
15/5-22/5
  • 15/5-22/5
  • 4 total stops
  • 53h 06m total
  • Seattle to San José
Search Deals
19/6
  • 19/6
  • 2 total stops
  • 32h 37m total
  • Seattle to San José
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 153 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 629,999 searches. Data last updated 1 May 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

Mon 24/8

7:25 p.m.-12:45 p.m.

2 stops16h 20m

San José Juan Santamaria Intl

Sat 29/8

9:30 a.m.-10:55 p.m.

2 stops14h 25m

C$ 745

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 26/5

7:05 a.m.-11:33 p.m.

2 stops15h 28m

San José Juan Santamaria Intl

Tue 9/6

1:06 a.m.-9:02 p.m.

1 stop20h 56m

C$ 787

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Wed 27/5

9:15 p.m.-11:33 p.m.

1 stop25h 18m

San José Juan Santamaria Intl

Tue 16/6

1:06 a.m.-9:02 p.m.

1 stop20h 56m

C$ 794

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 18/5

8:45 a.m.-11:33 p.m.

2 stops13h 48m

San José Juan Santamaria Intl

Wed 20/5

12:53 a.m.-6:02 a.m.

2 stops30h 09m

C$ 808

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 25/5

11:03 p.m.-11:33 p.m.

2 stops23h 30m

San José Juan Santamaria Intl

Sun 31/5

12:53 a.m.-6:54 p.m.

2 stops19h 01m

C$ 812
Quickest round-trip

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 8/10

7:00 a.m.-7:30 p.m.

1 stop11h 30m

San José Juan Santamaria Intl

Wed 18/11

1:45 a.m.-2:42 p.m.

1 stop14h 57m

C$ 878

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 15/5

8:45 a.m.-11:33 p.m.

2 stops13h 48m

San José Juan Santamaria Intl

Sat 23/5

12:53 a.m.-6:08 a.m.

2 stops30h 15m

C$ 940

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 3/7

5:15 a.m.-7:40 p.m.

2 stops13h 25m

San José Juan Santamaria Intl

Sat 11/7

8:45 a.m.-12:10 a.m.

1 stop16h 25m

C$ 948

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 24/5

8:30 p.m.-11:33 p.m.

2 stops26h 03m

San José Juan Santamaria Intl

Sat 30/5

12:53 a.m.-8:26 p.m.

2 stops20h 33m

C$ 952
Cheapest one-way

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 7/9

7:25 p.m.-12:45 p.m.

2 stops16h 20m

C$ 367

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/4

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

To ensure you get the cheapest price possible for a flight from Seattle to San José, you should look to book at least 81 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 C$ 667). Flying from Seattle to San José in April is currently the most expensive (average of C$ 1,057). 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?

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?

    There are many flights that can get you from Seattle to San José in 16h 33m. Fly via Alaska Airlines to get the fastest option. Airlines will cover a distance of 5480 km.

  • 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 C$ 667). Flying from Seattle to San José in April is currently the most expensive (average of C$ 1,057). 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

Travelling to a place near San José?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to San José

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How does Cheapflights help users find flights from Seattle to San José?

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Why should you use Cheapflights to find cheap flight tickets from Seattle to San José?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Seattle to San José for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Seattle to San José with no change fees?

Yes! Cheapflights helps users easily find flights from Seattle to San José with no change fees.

Can Cheapflights notify me if prices for flights from Seattle to San José become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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