Cheap flights from Seattle to Chicago

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      Qatar Airways
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      Compare Seattle to Chicago flight deals

      Find the cheapest month or even day of the year to fly to Chicago

      Book the best Chicago fare with no extra fees

      Flight deals from Seattle to Chicago

      Looking for a cheap last-minute deal or the best round-trip flight from Seattle to Chicago? If you want to travel next month, round-trip fares start from $179. Find the lowest prices on one-way and round-trip tickets right here.

      Find the cheapest month to fly from Seattle to Chicago

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Chicago flights are currently cheapest in September.

      Direct flights from Seattle to Chicago

      Aer Lingus
      Air France
      Alaska Airlines
      American Airlines
      Austrian Airlines
      Avianca
      British Airways
      Brussels Airlines
      Delta
      Emirates
      Finnair
      Gulf Air
      Iberia
      KLM
      Korean Air
      Lufthansa
      Malaysia Airlines
      Porter Airlines
      Qatar Airways
      Royal Jordanian
      Scandinavian Airlines
      Southwest Airlines
      SWISS
      Turkish Airlines
      United

      Alternative Seattle to Chicago routes

      Looking for the cheapest, fastest or easiest route from Seattle to Chicago? You could fly into the following airports instead.

      Seattle to Chicago: Flight information

      The things to know before you go.
      Cheapest flight found$179
      Cheapest month to flyOctober
      Average flight time4 hrs, 6 mins
      Most popular airlineQatar Airways
      Average flights per week2,052

      Finding cheap flights from Seattle to Chicago: Frequently asked questions

      There are 3 airports in Chicago: Chicago Midway, Chicago O'Hare International and Chicago Rockford.
      The best price we found for a round-trip flight from Seattle to Chicago is $179. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      4 hours and 5 minutes is the average flight time from Seattle to Chicago.
      Qatar Airways, American Airlines and Alaska Airlines fly direct from Seattle to Chicago.
      There are 2,052 flights per week flying from Seattle to Chicago, as of August 2026.
      The cheapest month to fly from Seattle to Chicago is usually October.
      If you're flying from Seattle, the cheapest airport near Chicago is Chicago O'Hare International – which is 25.5 km away from the center of Chicago. We've found flights to this airport from $179.
      After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Chicago on Monday, October 26, 2026.
      Yes – the average flight time is 4 hours and 5 minutes.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chicago but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Chicago is around 40 days in advance, so don’t leave your flight to the last minute.

      In August, the average temperature is usually around 22°C. July is typically the warmest month in Chicago, when it usually averages around 26°C. You can expect the least rain in January. The coldest month is January, with temperatures averaging -8°C. The rainiest month is August.
      The cheapest airline that flies to Chicago is Frontier Airlines, and the cheapest airline that flies to Chicago O'Hare International Airport is Alaska Airlines.

      Flying from Seattle to Chicago: what you need to know

      • Begin planning your trip by checking out the ideal departure point for your flight from Seattle to Chicago. Explore your options for setting off from Seattle / Tacoma International Airport (SEA) or Paine Field Airport (PAE), two of the city's main airports.

      • The major entry paths to Chicago are Chicago O'Hare International Airport (ORD) and Chicago Midway Airport (MDW).

      • Around 4 hours 5 minutes is how long you can expect to be in the air on a direct Seattle to Chicago flight.

      • Chicago is two hours ahead of Seattle and follows the UTC-6 timezone.

      • The busiest route for flights from Seattle to Chicago is from Seattle / Tacoma International Airport (SEA) to Chicago O'Hare International Airport (ORD). You can select from 113 services every week between these two airports. If you'd like to be on your way as soon as possible, the earliest flight from SEA to ORD is the 00:05 American Airlines option. If you prefer traveling later, the latest available service is at 23:59 with American Airlines.

      • For a stress-free journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to board your Seattle to Chicago flight.

      • Flying during a peak time like July? School holidays and other high seasons can mean longer queues at check-in and security. Play things extra safe and arrive up to four hours before international flights and two hours before a domestic departure.

      How to find the cheapest flights from Seattle to Chicago

      • To find cheap Seattle to Chicago flights, book as early as you can. Airlines usually offer lower prices when tickets first go on sale.

      • The 'Whole month' search tool will show you the cheapest plane tickets from Seattle to Chicago across every month. It's a great way to find a bargain if your dates aren't set in stone.

      • You don't need to search every day to see if prices have dropped when you set up a Price Alert. We'll notify you the moment there's a better deal on cheap flights from Seattle to Chicago.

      • Save money on your Seattle to Chicago flight with the help of our filters. Choose your ideal duration, departure time and airlines, then sort the results by 'Cheapest' to see the best deals.

      Flying from Seattle

      Seattle / Tacoma International Airport (SEA)

      • Jet off from Seattle / Tacoma International Airport (SEA) and fly right through to Chicago O'Hare International Airport (ORD) or Chicago Midway Airport (MDW). If you're searching for a direct flight from Seattle to Chicago out of SEA, that's where your journey can take you.

      • These are some of the major carriers offering direct Seattle to Chicago plane tickets out of SEA:

      • The journey from central Seattle to SEA takes around 35 minutes on public transport. If you drive, ride-share or take a cab, you'll cover the 19 kilometers in 25 minutes or so, depending on traffic conditions.

      • Have an early flight from Seattle to Chicago? Avoid the last-minute rush to the airport (and catch some extra z's) by choosing one of these hotels near Seattle / Tacoma International Airport:

      • Seattle / Tacoma International Airport maintains a strong on-time performance, so you're unlikely to face delays. Departures from SEA land at their destination as scheduled 80% of the time.

      Arriving in Chicago

      Chicago O'Hare International Airport (ORD)

      • Chicago O'Hare International Airport (ORD) to central Chicago takes about 30 minutes by car. The center is roughly 26 kilometers away.

      • When traveling by public transport, expect a journey time of roughly 45 minutes.

      • The last thing you want is a lengthy journey to your hotel if you're getting in late on a flight from Seattle to Chicago. Stay at one of these accommodation options near ORD instead:

      • Pick up a Chicago O'Hare International Airport rental car and explore Chicago and beyond with your own set of wheels. Routes Car Rentals, Dollar and Budget are leading providers you can book with here.

      • To get the best deal, reserve your vehicle from Chicago O'Hare International Airport about four weeks ahead of your Seattle to Chicago flight.

      • You'll find ORD at 10000 West O'Hare.

      Chicago Midway Airport (MDW)

      • Chicago Midway Airport (MDW) is roughly 14 kilometers from central Chicago. After your flight from Seattle to Chicago, it takes approximately 25 minutes to get to the heart of the city in a cab or ride-share.

      • You can expect the journey to take about 30 minutes on public transport.

      • After your flight from Seattle to Chicago, rest your head at a hotel near MDW. These are some great accommodation options that'll help you get into relaxation mode:

      • The quickest way to reach your destination is with a Chicago Midway Airport rental car. Grab your wheels from Dollar, Hertz or Budget and be off and running.

      • Get the pick of the lot. Reserving your ride from MDW four weeks ahead of time often means more savings and a bigger choice of vehicles.

      • You can find Chicago Midway Airport at 5700 South Cicero.

      Chicago Rockford Airport (RFD)

      • Chicago Rockford Airport (RFD) is roughly 129 kilometers from central Chicago. It takes about 1 hour 40 minutes to reach the city center in a ride-share or cab after your flight from Seattle to Chicago.

      • The journey takes around 2 hours when traveling by public transport.

      • Start your travels without stressing over how to reach your destination with a Chicago Rockford Airport rental car. You can book with trusted suppliers here like Budget, Alamo and National.

      • Rental agencies sometimes offer promotions for early bookings, so book your ride from RFD a few weeks ahead of your flight from Seattle to Chicago. A little planning can save you money.

      • The address for Chicago Rockford Airport is 2 Airport Cir.

      Best time to go to Chicago

      • July is the busiest month for flights from Seattle to Chicago. To escape the crowds, head to Chicago in March.

      • Before locking in your Seattle to Chicago tickets, think about the type of weather you enjoy. July is the warmest month in Chicago, with temperatures ranging from 16ºC (61ºF) to 28ºC (82ºF).

      • Search for cheap flights from Seattle to Chicago in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between -12ºC (10ºF) and 3ºC (37ºF) on average.

      More about Chicago

      Explore more of the United States

      • Chicago has loads to offer, but there are so many other corners of the United States just waiting to be explored. About 451 kilometers southeast of Chicago, a visit to Columbus will keep you busy. Start with leading sights like Franklin Park Conservatory and Botanical Gardens, Columbus Park of Roses and Ohio Theatre.

      • Indianapolis is another favorite destination in the United States and is around 257 kilometers southeast of Chicago. No trip is complete without experiencing Lucas Oil Stadium, Eiteljorg Museum of American Indians and Western Art and The Children's Museum of Indianapolis.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.