Search flights from Seattle (SEA) to San José (SJO)

Book your plane tickets from Seattle to San José with ease

Cheapest flights to San José

The cheapest flights available in the next 60 days – prices are updated regularly

Flying from Seattle to San José: things to know

The most popular route is from Sea-Tac Airport in Seattle to Juan Santamaría International Airport in San José. On average this flight takes 11 hours 37 minutes one way and costs US$6,385 for the round trip.

Most popular route
Sea-Tac Airport (SEA) to Juan Santamaría International Airport (SJO)
Average flight time
11 hours 37 minutes
Average round-trip price
US$6,385
Fly from Seattle to San José
9 airlines

Reasons to book flights with Booking.com

  • Great selection

    Easily compare flights, airlines and prices – all in one place

  • No hidden fees

    Always know exactly what you’re paying for

  • Flexibility

    Use our flexible plane ticket option to change your dates if needed

Flexible plane ticket options are available for an additional cost on selected airfares

Airlines that fly from Seattle to San José

Airline options may vary according to recently booked flights and your search terms

  • American Airlines
  • Aeromexico
  • United Airlines
  • Alaska Airlines
  • Spirit Airlines
  • Avianca
  • Copa Airlines
  • Southwest Airlines
  • Sun Country

Frequently asked questions

Fly to more destinations from Seattle

Research, refine and make plans for your whole trip

Flights to San José

Get your flight tickets to San José right here on Booking.com.

Flights from the United States to Costa Rica

More options to fly to Costa Rica.

All flights

Fly to your next dream destination.

Flights from Seattle to Costa Rica

Plan your next getaway from Seattle.

Hotels in San José

A popular choice with visitors to Costa Rica.