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Book Flights from Chicago to Seattle will help you to find the best deals on flights from Chicago to Seattle. 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 Seattle. 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 SEA and read reviews from others who booked their flights with

Frequently Asked Questions - Chicago to Seattle Flights

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

    9:15AM Southwest Airlines Flight #883

  • When does the last flight depart to SEA?

    10:35PM Spirit Airlines Flight #727

  • What is the travel distance between Chicago and Seattle?

    1,734 miles

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

    There are 89 weekly flights between CHI and SEA.

  • How many daily flights fly between Chicago and Seattle?

    There are 11 daily flights between CHI and SEA

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


  • Which is the nearest airport to Seattle, Washington?

    Kenmore Air Harbor

  • Which is the nearest airport to Chicago, Illinois?

    Midway International Airport