$149 Cheap Flights from Seattle (SEA) to San José (SJO)

View $149 flight on Fri, Oct 31, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Juan Santamaria Intl. Airport (SJO)

Cheap Flights from Seattle to San José (SEA-SJO)

Prices were available within the past 7 days and start at $149 for one-way flights and $323 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Fri, Oct 31 - Fri, Nov 7
SEA
Seattle
SJO
San José
$323 Roundtrip, found 11 hours ago
$323
Roundtrip
found 11 hours ago
Select Southwest Airlines flight, departing Fri, Oct 31 from Seattle to San José, returning Fri, Nov 7, priced at $323 found 11 hours ago
Southwest Airlines
Sat, Nov 1 - Fri, Nov 7
SEA
Seattle
SJO
San José
$330 Roundtrip, found 13 hours ago
$330
Roundtrip
found 13 hours ago
Select Southwest Airlines flight, departing Sat, Nov 1 from Seattle to San José, returning Fri, Nov 7, priced at $330 found 13 hours ago
Southwest Airlines
Fri, Jan 30 - Sat, Feb 7
SEA
Seattle
SJO
San José
$333 Roundtrip, just found
$333
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Jan 30 from Seattle to San José, returning Sat, Feb 7, priced at $333 just found
Southwest Airlines
Thu, Nov 13 - Mon, Nov 17
SEA
Seattle
SJO
San José
$336 Roundtrip, found 8 hours ago
$336
Roundtrip
found 8 hours ago
Select Southwest Airlines flight, departing Thu, Nov 13 from Seattle to San José, returning Mon, Nov 17, priced at $336 found 8 hours ago
Southwest Airlines
Fri, Feb 6 - Tue, Feb 10
SEA
Seattle
SJO
San José
$337 Roundtrip, found 1 day ago
$337
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Fri, Feb 6 from Seattle to San José, returning Tue, Feb 10, priced at $337 found 1 day ago
Southwest Airlines
Fri, Feb 6 - Fri, Feb 13
SEA
Seattle
SJO
San José
$338 Roundtrip, found 13 hours ago
$338
Roundtrip
found 13 hours ago
Select Southwest Airlines flight, departing Fri, Feb 6 from Seattle to San José, returning Fri, Feb 13, priced at $338 found 13 hours ago
Alaska Airlines
Thu, Nov 13 - Mon, Nov 17
SEA
Seattle
SJO
San José
$373 Roundtrip, found 8 hours ago
$373
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Thu, Nov 13 from Seattle to San José, returning Mon, Nov 17, priced at $373 found 8 hours ago
American Airlines
Thu, Nov 6 - Fri, Nov 14
SEA
Seattle
SJO
San José
$375 Roundtrip, found 16 hours ago
$375
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Thu, Nov 6 from Seattle to San José, returning Fri, Nov 14, priced at $375 found 16 hours ago
Delta
Mon, Oct 27 - Wed, Nov 5
SEA
Seattle
SJO
San José
$490 Roundtrip, just found
$490
Roundtrip
just found
Select Delta flight, departing Mon, Oct 27 from Seattle to San José, returning Wed, Nov 5, priced at $490 just found
United
Tue, Feb 17 - Tue, Feb 24
SEA
Seattle
SJO
San José
$490 Roundtrip, just found
$490
Roundtrip
just found
Select United flight, departing Tue, Feb 17 from Seattle to San José, returning Tue, Feb 24, priced at $490 just found

Find the cheapest month to fly from Seattle (SEA) to San José (SJO)

September is typically the cheapest month to fly

From $320 - $488 per traveler.

Alternative airports near San José

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Juan Santamaria Intl. SJO. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $390
SJO
Juan Santamaria Intl.
Cheapest
Average driving time to city center20 min
Flights from $390

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Juan Santamaria Intl. Airport (SJO) cost?
Secure a cheap one-way flight from $149 or cheap return flight from $323 from Seattle - Tacoma Intl. Airport (SEA) to Juan Santamaria Intl. Airport (SJO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Juan Santamaria Intl. Airport (SJO)?
Planning your trip for October is a great way to save, as it's the cheapest month for flights between SEA and SJO. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Juan Santamaria Intl. Airport (SJO)?
To find the cheapest airline flying from SEA to SJO, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Juan Santamaria Intl. Airport (SJO)?
Nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Juan Santamaria Intl. Airport (SJO) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to SJO?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Juan Santamaria Intl. Airport (SJO)?
To arrive at Juan Santamaria Intl. Airport (SJO) on time, choose a flight that takes off from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Juan Santamaria Intl. Airport (SJO) last-minute?
Holding off until just before your departure to book a flight from SEA to SJO often results in higher prices. While you may find some last-minute offers, they're not always guaranteed. Keep your travel plans flexible for a better chance of snagging a bargain.
Is it cheaper to book a SEA to SJO flight and hotel package?
Compared with arranging hotels and flights separately, booking a SEA to SJO flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place will take the hassle out of travel planning. Simply pick your flights and choose from our extensive range of hotels, then customize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Juan Santamaria Intl. Airport (SJO)?
If you reserved your SEA to SJO flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Juan Santamaría Intl.
Airlines serving
Aeromexico, Air Canada, Alaska Airlines, American Airlines, Copa, Delta, JetBlue Airways, Southwest Airlines, United, avianca
Roundtrip price
$323
Distance
3406 mi

Book with confidence

Seattle to San José Flights

The cheapest times to fly from Seattle to San José

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to San José are during the month of October. You can find some of the cheapest flights from Seattle to San José with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to San José

Sunday is one of the best days to book for cheap flights from Seattle to San José: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to San José

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to San José in 2025. You can also book with separate airlines for your outbound and return journeys, from $149 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to San José flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to San José airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to San José Flights

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*Available to One Key members.