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Book Flights from Seattle to Chicago will help you to find the best deals on flights from Seattle to Chicago. With our search technology, effortlessly searching flight routes across hundreds of airlines has never been easier or more convenient. With, we aim to make it simple and quick to search, select and save on the flights that best suit your needs and budget.

No matter if you are traveling for business or pleasure, we offer a wide range of deals from business class discounts to last minute flight deals to destinations like Chicago. Whether you are planning ahead or looking for last minute tickets, CheapOair has the right flights at the right price. After booking your ticket, explore this page to view blog posts about this destination, learn more about hotels near CHI and read reviews from others who booked their flights with

Frequently Asked Questions - Seattle to Chicago Flights

  • When does the first flight of the day depart from SEA?

    6:45AM Southwest Airlines Flight #665

  • When does the last flight depart to CHI?

    11:55PM Southwest Airlines Flight #4008

  • What is the travel distance between Seattle and Chicago?

    1,734 miles

  • How many weekly flights are there between SEA to CHI?

    There are 92 weekly flights between SEA and CHI.

  • How many daily flights fly between Seattle and Chicago?

    There are 12 daily flights between SEA and CHI

  • Which is the busiest day in terms of passengers traffic between SEA to CHI?


  • Which is the nearest airport to Chicago, Illinois?

    Midway International Airport

  • Which is the nearest airport to Seattle, Washington?

    Kenmore Air Harbor