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Cheap flights from Seattle to San José from C$ 228

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
27 Apr — 4 May1
1 adult

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 22 April 2025.

Round-trip from

C$ 550

One-way from

C$ 228

Popular in

December

Cheapest in

May

Average price

C$ 1,002
Alaska Airlines
  • Alaska Airlines
  • 31/5-4/6
  • 2 total stops
  • 33h 33m total
  • Seattle to San José
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Delta
  • Delta
  • 26/8
  • 1 total stop
  • 13h 28m total
  • Seattle to San José
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 92 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 44 potential savings vs. average RT price).
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Average for round-trip flights in April 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 22 April 2025.

Sat 31/56:00 a.m.SEA - SJO
1 stop16h 46mAlaska Airlines
Wed 4/61:06 a.m.SJO - SEA
1 stop16h 47mAlaska Airlines
Deal found 22/4C$ 550
Sun 11/511:59 p.m.SEA - SJO
1 stop11h 27mUnited Airlines
Thu 15/57:55 a.m.SJO - SEA
2 stops18h 04mUnited Airlines
Deal found 21/4C$ 634
Fri 2/510:10 p.m.SEA - SJO
1 stop19h 14mAmerican Airlines
Mon 5/56:03 a.m.SJO - SEA
1 stop18h 04mAmerican Airlines
Deal found 22/4C$ 672
Fri 2/510:30 p.m.SEA - SJO
1 stop12h 25mDelta
Sat 10/57:25 a.m.SJO - SEA
1 stop14h 24mDelta
Deal found 22/4C$ 705
Fri 6/67:50 p.m.SEA - SJO
2 stops15h 25mSouthwest
Thu 12/68:45 a.m.SJO - SEA
2 stops17h 05mSouthwest
Deal found 22/4C$ 744
Fri 2/512:30 p.m.SEA - SJO
2 stops21h 48mSpirit Airlines
Mon 5/512:23 p.m.SJO - SEA
2 stops24h 12mSpirit Airlines
Deal found 22/4C$ 778
Fri 2/512:21 p.m.SEA - SJO
2 stops21h 03mMultiple Airlines
Sun 4/512:55 a.m.SJO - SEA
1 stop22h 05mMultiple Airlines
Deal found 22/4C$ 835
Sat 27/97:35 p.m.SEA - SJO
2 stops17h 19mCopa Airlines
Sun 26/108:07 a.m.SJO - SEA
2 stops30h 08mCopa Airlines
Deal found 22/4C$ 951

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 22 April 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

Sat 31/5

6:00 a.m.-11:46 p.m.

1 stop16h 46m

San José Juan Santamaria Intl

Wed 4/6

1:06 a.m.-4:53 p.m.

1 stop16h 47m

C$ 550

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 11/5

11:59 p.m.-12:26 p.m.

1 stop11h 27m

San José Juan Santamaria Intl

Thu 15/5

7:55 a.m.-12:59 a.m.

2 stops18h 04m

C$ 634

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 2/5

10:10 p.m.-6:24 p.m.

1 stop19h 14m

San José Juan Santamaria Intl

Mon 5/5

6:03 a.m.-11:07 p.m.

1 stop18h 04m

C$ 672

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 2/5

10:30 p.m.-11:55 a.m.

1 stop12h 25m

San José Juan Santamaria Intl

Sat 10/5

7:25 a.m.-8:49 p.m.

1 stop14h 24m

C$ 705

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 16/9

7:00 a.m.-6:55 p.m.

2 stops10h 55m

San José Juan Santamaria Intl

Fri 26/9

8:50 a.m.-11:30 p.m.

2 stops15h 40m

C$ 709

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 2/5

12:30 p.m.-11:18 a.m.

2 stops21h 48m

San José Juan Santamaria Intl

Mon 5/5

12:23 p.m.-11:35 a.m.

2 stops24h 12m

C$ 778

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Fri 2/5

12:21 p.m.-10:24 a.m.

2 stops21h 03m

San José Juan Santamaria Intl

Sun 4/5

12:55 a.m.-10:00 p.m.

1 stop22h 05m

C$ 835

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sat 27/9

7:35 p.m.-1:54 p.m.

2 stops17h 19m

San José Juan Santamaria Intl

Sun 26/10

8:07 a.m.-1:15 p.m.

2 stops30h 08m

C$ 951

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 26/8

9:20 p.m.-11:48 a.m.

1 stop13h 28m

C$ 228

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 22/6

5:05 p.m.-10:11 a.m.

1 stop16h 06m

C$ 292

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/4

Showing 1-10 of 12 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 18 April 2025.

To ensure you get the cheapest price possible for a flight from Seattle to San José, San José Province, you should look to book at least 51 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, 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 C$ 486). Flying from Seattle to San José, San José Province in December is currently the most expensive (average of C$ 683). 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 22 April 2025.

When flying from Seattle to San José, San José Province, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 17% versus a flight in the morning.

Rainfall in San José by month

Plan your trip to San José by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San José, San José Province ranges from 0.0 - 300.0 mm per month. September is typically the wettest month, when rainfall can reach 300.0 mm. February is typically the driest time to visit San José, San José Province when rainfall is around 0.0 mm.

Temperature in San José by month

Plan your trip to San José by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San José, San José Province, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 18.0 C).

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 22 April 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Seattle to San José to help guide your decision. 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
9,906 reviews
Check prices

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
9,906 reviews
Alaska Airlines
8.0
Very good
9,906 reviews
Check prices

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Southwest
8.0
Very good
4,286 reviews
Alaska Airlines
8.0
Very good
9,906 reviews
Check prices

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,906 reviews
Check prices

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Copa Airlines
7.5
Good
1,408 reviews
Alaska Airlines
8.0
Very good
9,906 reviews
Check prices

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,683 reviews
Alaska Airlines
8.0
Very good
9,906 reviews
Check prices

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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.

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

    Currently priced at C$ 550, Alaska Airlines will fly you from Seattle to San José, San José Province and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from C$ 634 and C$ 672, respectively. Alaska Airlines is priced at 41% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as C$ 228. However, be on the lookout for offers from United Airlines and Southwest, as they are both options that can get you from Seattle to San José, San José Province for a low price.

  • 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 C$ 486). Flying from Seattle to San José, San José Province in December is currently the most expensive (average of C$ 683). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
Jacó
Alajuela
Dominical
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.
Seattle to Liberia flights

Top 2 airlines flying from Seattle to San José

Discover the top 2 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 629,999 searches. Data last updated 22 April 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 573AverageC$ 698FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Alaska AirlinesCheapestC$ 672AverageC$ 815FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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