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Cheap flights from Seattle to San José from C$ 235

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
28 Feb — 7 Mar1
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 29 January 2026.

Mon 20/47:10 a.m.
SEA
-
SJO
2 stops15h 43m
Alaska Airlines
Tue 19/512:53 a.m.
SJO
-
SEA
2 stops19h 01m
Alaska Airlines
Deal found 28/1C$ 544
Sat 28/212:07 a.m.
SEA
-
SJO
1 stop19h 00m
American Airlines
Fri 6/37:00 a.m.
SJO
-
SEA
1 stop19h 24m
American Airlines
Deal found 27/1C$ 553
Mon 16/310:08 p.m.
SEA
-
SJO
2 stops14h 06m
American Airlines
Tue 24/32:59 p.m.
SJO
-
SEA
2 stops30h 29m
American Airlines
Deal found 28/1C$ 557
Sun 19/48:42 p.m.
SEA
-
SJO
2 stops26h 11m
Alaska Airlines
Tue 12/512:53 a.m.
SJO
-
SEA
2 stops19h 01m
Alaska Airlines
Deal found 28/1C$ 562
Wed 25/21:20 p.m.
SEA
-
SJO
2 stops21h 30m
Southwest
Wed 11/38:45 a.m.
SJO
-
SEA
2 stops16h 10m
Southwest
Deal found 27/1C$ 570
Tue 21/47:10 a.m.
SEA
-
SJO
2 stops15h 43m
Alaska Airlines
Wed 13/512:53 a.m.
SJO
-
SEA
2 stops19h 01m
Alaska Airlines
Deal found 28/1C$ 585
Tue 21/46:25 a.m.
SEA
-
SJO
1 stop16h 28m
Alaska Airlines
Tue 12/512:53 a.m.
SJO
-
SEA
1 stop19h 03m
Alaska Airlines
Deal found 28/1C$ 591
Tue 21/411:25 a.m.
SEA
-
SJO
1 stop11h 28m
Alaska Airlines
Fri 8/512:55 a.m.
SJO
-
SEA
2 stops15h 41m
Alaska Airlines
Deal found 28/1C$ 593
Mon 20/45:59 p.m.
SEA
-
SJO
1 stop28h 54m
Alaska Airlines
Wed 13/512:53 a.m.
SJO
-
SEA
2 stops19h 01m
Alaska Airlines
Deal found 28/1C$ 595
Tue 21/411:25 a.m.
SEA
-
SJO
1 stop11h 28m
Alaska Airlines
Mon 11/512:55 a.m.
SJO
-
SEA
1 stop17h 43m
Alaska Airlines
Deal found 28/1C$ 599

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 29 January 2026.

Round-trip from

C$ 544

One-way from

C$ 235

Popular in

April

Cheapest in

October

Average price

C$ 771
Alaska Airlines
  • Alaska Airlines
  • 20/4-19/5
  • 4 total stops
  • 34h 44m total
  • Seattle to San José
Search Deals
Southwest
  • Southwest
  • 2/3
  • 2 total stops
  • 12h 15m total
  • Seattle to San José
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 91 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 29 January 2026.
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 21/4

7:10 a.m.-11:53 p.m.

2 stops15h 43m

San José Juan Santamaria Intl

Tue 12/5

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

2 stops19h 01m

C$ 544

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sat 28/2

12:07 a.m.-9:07 p.m.

1 stop19h 00m

San José Juan Santamaria Intl

Fri 6/3

7:00 a.m.-12:24 a.m.

1 stop19h 24m

C$ 553

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 20/4

5:59 p.m.-11:53 p.m.

1 stop28h 54m

San José Juan Santamaria Intl

Tue 19/5

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

2 stops19h 01m

C$ 554

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Wed 25/2

1:20 p.m.-12:50 p.m.

2 stops21h 30m

San José Juan Santamaria Intl

Wed 11/3

8:45 a.m.-11:55 p.m.

2 stops16h 10m

C$ 570

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 20/4

7:10 a.m.-11:53 p.m.

2 stops15h 43m

San José Juan Santamaria Intl

Sat 9/5

12:55 a.m.-8:50 p.m.

1 stop20h 55m

C$ 615

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 21/4

11:25 a.m.-11:53 p.m.

1 stop11h 28m

San José Juan Santamaria Intl

Mon 27/4

12:55 a.m.-5:38 p.m.

1 stop17h 43m

C$ 646

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sat 28/2

7:53 p.m.-12:07 a.m.

2 stops26h 14m

San José Juan Santamaria Intl

Wed 11/3

1:28 a.m.-1:59 p.m.

1 stop13h 31m

C$ 694

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 23/4

10:49 a.m.-11:45 p.m.

1 stop11h 56m

San José Juan Santamaria Intl

Wed 13/5

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

2 stops19h 01m

C$ 696

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 10/5

9:00 a.m.-11:45 p.m.

1 stop13h 45m

San José Juan Santamaria Intl

Mon 18/5

12:53 a.m.-8:22 p.m.

1 stop20h 29m

C$ 696

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 10/2

5:15 a.m.-7:30 p.m.

2 stops12h 15m

San José Juan Santamaria Intl

Fri 13/2

9:40 a.m.-12:10 a.m.

2 stops16h 30m

C$ 702

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/1

Showing 1-10 of 19 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?

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 23 January 2026.

To ensure you get the cheapest price possible for a flight from Seattle to San José, you should look to book at least 20 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, May is the cheapest month in which you can book a flight from Seattle to San José (average of C$ 258). Flying from Seattle to San José in July is currently the most expensive (average of C$ 682). 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.

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 15h 43m. Fly via Alaska Airlines or American Airlines to get the fastest option. Airlines will cover a distance of 5480 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 C$ 258). Flying from Seattle to San José in July is currently the most expensive (average of C$ 682). 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
Alajuela
Jacó
Heredia
Dominical
Manuel Antonio
Monteverde

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Alternative routes for Seattle to San José

See prices for flight routes from nearby airports that may be better suited for you.
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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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