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Cheap flights from Seattle to San José from C$ 255

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
7 Jul — 14 Jul1
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 2 July 2025.

Round-trip from

C$ 519

One-way from

C$ 255

Popular in

December

Cheapest in

May

Average price

C$ 904
Southwest
  • Southwest
  • 22/7-26/7
  • 3 total stops
  • 27h 40m total
  • Seattle to San José
Search Deals
Delta
  • Delta
  • 3/9
  • 1 total stop
  • 19h 29m total
  • Seattle to San José
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 2 July 2025.

Tue 22/79:10 p.m.SEA - SJO
2 stops14h 35mSouthwest
Sat 26/712:00 p.m.SJO - SEA
1 stop13h 05mSouthwest
Deal found 1/7C$ 519
Sun 17/87:00 a.m.SEA - SJO
2 stops15h 30mAlaska Airlines
Fri 5/122:26 a.m.SJO - SEA
2 stops18h 44mAlaska Airlines
Deal found 30/6C$ 593
Mon 27/107:28 p.m.SEA - SJO
2 stops13h 57mUnited Airlines
Tue 4/112:20 p.m.SJO - SEA
1 stop10h 33mUnited Airlines
Deal found 1/7C$ 668
Sat 11/109:20 p.m.SEA - SJO
1 stop13h 28mDelta
Wed 29/101:13 p.m.SJO - SEA
1 stop11h 58mDelta
Deal found 1/7C$ 673
Sat 26/710:40 a.m.SEA - SJO
2 stops11h 55mMultiple Airlines
Mon 4/84:20 p.m.SJO - SEA
2 stops17h 57mMultiple Airlines
Deal found 1/7C$ 715

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 2 July 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

Tue 22/7

9:10 p.m.-12:45 p.m.

2 stops14h 35m

San José Juan Santamaria Intl

Sat 26/7

12:00 p.m.-12:05 a.m.

1 stop13h 05m

C$ 519

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 17/8

7:00 a.m.-11:30 p.m.

2 stops15h 30m

San José Juan Santamaria Intl

Fri 5/12

2:26 a.m.-7:10 p.m.

2 stops18h 44m

C$ 593

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 27/10

3:37 p.m.-7:32 a.m.

1 stop14h 55m

San José Juan Santamaria Intl

Tue 4/11

9:40 a.m.-6:25 p.m.

1 stop10h 45m

C$ 668

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sat 26/7

10:40 a.m.-11:35 p.m.

2 stops11h 55m

San José Juan Santamaria Intl

Mon 4/8

4:20 p.m.-9:17 a.m.

2 stops17h 57m

C$ 715

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Wed 3/9

3:41 p.m.-12:10 p.m.

1 stop19h 29m

C$ 255

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 4/9

6:15 p.m.-7:04 p.m.

2 stops23h 49m

C$ 289

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Wed 9/7

5:20 a.m.-7:40 p.m.

2 stops13h 20m

C$ 300

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 15/7

7:34 p.m.-7:15 a.m.

1 stop10h 41m

C$ 380

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 25/12

2:00 p.m.-6:55 p.m.

2 stops26h 55m

C$ 658

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

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 27 June 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 2 July 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.

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 2 July 2025.
Read reviews from past customers who have flown Alaska Airlines,Southwest, andDelta from Seattle to San José. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,983 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Copa Airlines
7.5
Good
1,465 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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$ 519, Southwest will fly you from Seattle to San José, San José Province and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Alaska Airlines and United Airlines - these airlines can fly you to your destination from C$ 593 and C$ 668, respectively. Southwest is priced at 42% 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$ 255. However, be on the lookout for offers from Alaska 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
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Dominical
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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 2 July 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 565AverageC$ 689FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Alaska AirlinesCheapestC$ 662AverageC$ 804FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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

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