₩457,700 Cheap Flights from San José (SJO) to Seattle (SEA)

View ₩457,700 flight on Thu, Mar 26, 2026Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at ₩457,700 for one-way flights and ₩770,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Mar 26 - Mon, Mar 30
SJO
San José
SEA
Seattle
₩770,500 Roundtrip, found 1 day ago
₩770,500
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Mar 26 from San José to Seattle, returning Mon, Mar 30, priced at ₩770,500 found 1 day ago
United
Thu, Mar 26 - Mon, Mar 30
SJO
San José
SEA
Seattle
₩777,800 Roundtrip, found 1 day ago
₩777,800
Roundtrip
found 1 day ago
Select United flight, departing Thu, Mar 26 from San José to Seattle, returning Mon, Mar 30, priced at ₩777,800 found 1 day ago
American Airlines
Thu, Mar 26 - Mon, Mar 30
SJO
San José
SEA
Seattle
₩788,200 Roundtrip, found 1 day ago
₩788,200
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Mar 26 from San José to Seattle, returning Mon, Mar 30, priced at ₩788,200 found 1 day ago
American Airlines
Thu, Mar 26 - Mon, Mar 30
SJO
San José
SEA
Seattle
₩796,100 Roundtrip, found 1 day ago
₩796,100
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Mar 26 from San José to Seattle, returning Mon, Mar 30, priced at ₩796,100 found 1 day ago
American Airlines
Thu, Mar 26 - Mon, Mar 30
SJO
San José
SEA
Seattle
₩847,300 Roundtrip, found 1 day ago
₩847,300
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Mar 26 from San José to Seattle, returning Mon, Mar 30, priced at ₩847,300 found 1 day ago
American Airlines
Thu, Mar 26 - Mon, Mar 30
SJO
San José
SEA
Seattle
₩849,300 Roundtrip, found 1 day ago
₩849,300
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Mar 26 from San José to Seattle, returning Mon, Mar 30, priced at ₩849,300 found 1 day ago
United
Thu, Mar 26 - Mon, Mar 30
SJO
San José
SEA
Seattle
₩854,600 Roundtrip, found 1 day ago
₩854,600
Roundtrip
found 1 day ago
Select United flight, departing Thu, Mar 26 from San José to Seattle, returning Mon, Mar 30, priced at ₩854,600 found 1 day ago
Delta
Thu, Mar 26 - Mon, Mar 30
SJO
San José
SEA
Seattle
₩891,900 Roundtrip, found 1 day ago
₩891,900
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Mar 26 from San José to Seattle, returning Mon, Mar 30, priced at ₩891,900 found 1 day ago
Air Canada
Thu, Mar 26 - Mon, Mar 30
SJO
San José
SEA
Seattle
₩1,161,300 Roundtrip, found 1 day ago
₩1,161,300
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Mar 26 from San José to Seattle, returning Mon, Mar 30, priced at ₩1,161,300 found 1 day ago
avianca
Thu, Mar 26 - Mon, Mar 30
SJO
San José
SEA
Seattle
₩1,443,000 Roundtrip, found 1 day ago
₩1,443,000
Roundtrip
found 1 day ago
Select avianca flight, departing Thu, Mar 26 from San José to Seattle, returning Mon, Mar 30, priced at ₩1,443,000 found 1 day ago

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

October is typically the cheapest month to fly

From ₩479,395 - ₩1,009,667 per traveler.

Frequently asked questions

How much is a flight from Juan Santamaria Intl. Airport (SJO) to Sea-Tac Airport?
Round-trip tickets between Juan Santamaria Intl. Airport (SJO) and Sea-Tac Airport start from ₩770,500. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year — book now to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Juan Santamaria Intl. Airport (SJO) to Sea-Tac Airport?
Most flights can be canceled online, but whether you incur a fee differs between airlines. If you do have to cancel your trip, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Juan Santamaria Intl. Airport to SEA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Juan Santamaria Intl. Airport to SEA flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SJO to SEA?
You'll have 5,500 kilometers to cover on the long-haul San Jose to SeaTac route. Wear comfy clothes and consider taking a pair of noise-canceling headphones.
Which airlines fly direct from Juan Santamaria Intl. Airport to Seattle - Tacoma Intl. Airport (SEA)?
If you want to fly straight from SJO to SEA, you'll have to book a flight with at least one stop. Unfortunately, there are no airlines that fly directly on this route.
Are Juan Santamaria Intl. Airport to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Late planners can sometimes score a bargain, with some of the cheapest airfares from SJO to Seattle - Tacoma Intl. Airport (SEA) cropping up a few weeks prior to the departure date. If you'd rather plan ahead of time, Expedia compares and updates all the best flight deals continuously — as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines advertise prices so far in advance.

Travel information

Travel information

Origin airport
Juan Santamaría Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, American Airlines, Delta, United, avianca
Roundtrip price
₩770,500
Distance
5450 km

Book with confidence

Book with confidence

San José to Seattle Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from San José to Seattle will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Seattle.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with SJO to SEA flights that won’t make your bank account wince. Ready to temporarily leave behind San José for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to SEA with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

San José to Seattle Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to Expedia members.