Search flights from Chicago (CHI) to Seattle (SEA)

Book your plane tickets from Chicago to Seattle with ease

Cheapest flights to Seattle

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

Flying from Chicago to Seattle: things to know

The most popular route is from Chicago O'Hare International Airport in Chicago to Sea-Tac Airport in Seattle. On average this flight takes 4 hours 48 minutes one way and costs US$598 for the round trip.

Most popular route
Chicago O'Hare International Airport (ORD) to Sea-Tac Airport (SEA)
Average flight time
4 hours 48 minutes
Average round-trip price
US$598
Fly from Chicago to Seattle
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 Chicago to Seattle

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

  • Alaska Airlines
  • United Airlines
  • American Airlines
  • Hawaiian Airlines
  • Frontier Airlines
  • Spirit Airlines
  • Southwest Airlines
  • Allegiant Air
  • Qatar Airways

Frequently asked questions

Fly to more destinations from Chicago

Research, refine and make plans for your whole trip

Flights to Sea-Tac Airport

Jet into this airport to explore Seattle at your leisure. Compare flights, fares and airlines – all in one place.

Flights to Snohomish County Airport

Jet into this airport to explore Seattle at your leisure.

All flights

Fly to your next dream destination.

Flights to Washington State

Reaching Washington State just got easier!

Hotels in Seattle

A popular choice with visitors to the United States.