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$143+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San José Juan Santamaria Intl are usually found in May or October, booked 51 days in advance, depart on a Tuesday or Monday and return on a Tuesday

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 July 3, 2025.

Round-trip from

$381
(Southwest)

One-way from

$143
(Avianca)

Popular in

December

Cheapest in

May

Average price

$663
From Seattle/Tacoma Intl to San José Juan Santamaria Intl
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One-way flight from Seattle/Tacoma Intl to San José Juan Santamaria Intl
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Highest demand for flights based on searches. 7% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
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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 July 3, 2025.

This Avianca deal was found by Cheapflights users on 7/1. 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.
Thu 12/48:00 amSEA - SJO
1 stop17h 45mMultiple Airlines
Mon 12/85:00 pmSJO - SEA
1 stop18h 45mMultiple Airlines
Deal found 7/1$368
This Southwest deal was found by Cheapflights users on 7/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/229:10 pmSEA - SJO
2 stops14h 35mSouthwest
Sat 7/2612:00 pmSJO - SEA
1 stop13h 05mSouthwest
Deal found 7/1$381
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/35:26 amSEA - SJO
1 stop11h 31mAmerican Airlines
Tue 9/97:27 amSJO - SEA
1 stop12h 42mAmerican Airlines
Deal found 7/1$406
This Trip.com deal was found by Cheapflights users on 7/3. 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 11/48:00 amSEA - SJO
2 stops21h 35mAvianca
Tue 11/114:40 pmSJO - SEA
2 stops30h 14mAvianca
Deal found 7/3$423
This Alaska Airlines deal was found by Cheapflights users on 6/30. 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.
Sun 8/177:00 amSEA - SJO
2 stops15h 30mAlaska Airlines
Fri 12/52:26 amSJO - SEA
2 stops18h 44mAlaska Airlines
Deal found 6/30$435
This Mytrip deal was found by Cheapflights users on 7/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/295:30 pmSEA - SJO
2 stops16h 41mSpirit Airlines
Tue 8/511:24 amSJO - SEA
3 stops30h 01mSpirit Airlines
Deal found 7/1$478
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Mon 10/277:28 pmSEA - SJO
2 stops13h 57mUnited Airlines
Tue 11/42:20 pmSJO - SEA
1 stop10h 33mUnited Airlines
Deal found 7/1$490
This Delta deal was found by Cheapflights users on 7/1. 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.
Sat 10/119:20 pmSEA - SJO
1 stop13h 28mDelta
Sun 10/261:13 pmSJO - SEA
1 stop11h 58mDelta
Deal found 7/1$498

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 July 3, 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 7/22

9:10 pm-12:45 pm

2 stops14h 35m

San José Juan Santamaria Intl

Sat 7/26

12:00 pm-12:05 am

1 stop13h 05m

$381

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 9/1

4:20 pm-7:40 am

2 stops14h 20m

San José Juan Santamaria Intl

Mon 9/8

4:20 pm-9:40 am

2 stops18h 20m

$387

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Wed 9/3

5:26 am-5:57 pm

1 stop11h 31m

San José Juan Santamaria Intl

Tue 9/9

7:27 am-7:09 pm

1 stop12h 42m

$406

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 8/17

6:00 am-11:30 pm

1 stop16h 30m

San José Juan Santamaria Intl

Fri 12/5

2:26 am-7:10 pm

2 stops18h 44m

$435

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 9/23

8:00 am-7:40 am

2 stops22h 40m

San José Juan Santamaria Intl

Tue 9/30

4:20 pm-8:44 pm

2 stops29h 24m

$469

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 7/21

5:30 pm-11:11 am

2 stops16h 41m

San José Juan Santamaria Intl

Tue 7/29

11:24 am-4:25 pm

3 stops30h 01m

$470

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Wed 8/13

5:10 am-7:37 pm

2 stops13h 27m

San José Juan Santamaria Intl

Wed 8/20

1:30 pm-10:52 pm

1 stop10h 22m

$507

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 9/23

4:20 pm-7:40 am

2 stops14h 20m

$143

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Wed 9/3

3:41 pm-12:10 pm

1 stop19h 29m

$187

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Wed 7/30

5:20 am-7:40 pm

2 stops13h 20m

$202

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 15 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 June 27, 2025.

The best time to book flights from Seattle to San José, San José Province is 51 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $398). Flying from Seattle to San José, San José Province in March is currently the most expensive (average of $555). 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 July 3, 2025.

It’s typically best to fly out from Seattle to San José, San José Province at noon. Doing so could potentially save you 6% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Seattle to San José, San José Province?

Use this chart to determine the cheapest time to fly round-trip from Seattle to San José. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to San José, San José Province flight should consider departing on Monday at noon when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 July 3, 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
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

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

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

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
4,270 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

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
7,970 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

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
8,845 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

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.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

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?

    Southwest, at $381, was found to be the cheapest airline from Seattle to San José, San José Province.Alternate airlines to your destination round-trip include American Airlines and Alaska Airlines. You may be able to fly from Seattle to San José, San José Province for 42% less than the average price by searching for these airlines.

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

    The cheapest airlines for a one-way flight from Seattle to San José, San José Province are Delta ($187), Alaska Airlines ($210), and American Airlines ($212).

  • Where are the most common layover locations when flying from Seattle to San José, San José Province?

    Most of the time, Seattle to San José, San José Province flights that have layovers will stop in Dallas. Houston sees the second most layovers for non-direct flights flying from Seattle to San José, San José Province.

  • 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 Reunion Tower more than anywhere else. Those on a layover in Dallas interested in visiting American Airlines Center, Dallas World Aquarium, or Reunion Tower can do so by traveling 15.0 mi, 15.5 mi, and 15.6 mi, respectively from Dallas/Fort Worth. Travelers can rent a car at Dallas/Fort Worth for an average daily rate of $53 to make sightseeing during their layover a little easier.

  • What are some popular points of interest to see during a layover in Houston?

    Most Houston visitors opt to 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 are located about 33.5 mi, 16.1 mi, and 15.5 mi, respectively from Houston George Bush Intcntl. Those looking to explore during their layover in Houston can rent a car from Houston George Bush Intcntl for about $37 per day.

  • Where are the least popular layover locations for Seattle to San José, San José Province flights?

    Seattle to San José, San José Province flights have a layover in Miami least often. Los Angeles sees the next fewest layovers on Seattle to San José, San José Province flights.

  • 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 $398). Flying from Seattle to San José, San José Province in March is currently the most expensive (average of $555). 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

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Top 9 airlines flying from Seattle to San José

Discover the top 9 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$152Average$217FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$308Average$394FlexibilityNo cancel feeOn-time65%
DeltaCheapest$394Average$645FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$446Average$642FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$455Average$640FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$489Average$691FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$521Average$639FlexibilityNo cancel feeOn-time63%
Copa AirlinesCheapest$634Average$792FlexibilityNo cancel feeOn-time70%
AeromexicoCheapest$734Average$981FlexibilityNo cancel feeOn-timeN/A

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