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Cheap Flights from Seattle to Chicago

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Compare Seattle / Tacoma International to Chicago O'Hare International flight deals

Find the cheapest month or even day of the year to fly to Chicago O'Hare International

Book the best Chicago O'Hare International fare with no extra fees

Flight deals from Seattle / Tacoma International to Chicago O'Hare International

Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International to Chicago O'Hare International? Find the lowest prices on one-way and return tickets right here.
Chicago.$204 per passenger.Departing Tue, 25 Mar, returning Tue, 1 Apr.Return flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 25 Mar, arriving in Chicago O'Hare International.Inbound direct flight with Delta departs from Chicago O'Hare International on Tue, 1 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $204, select.
Chicago.$213 per passenger.Departing Mon, 14 Apr, returning Fri, 2 May.Return flight with United.Outbound direct flight with United departs from Seattle / Tacoma International on Mon, 14 Apr, arriving in Chicago O'Hare International.Inbound direct flight with United departs from Chicago O'Hare International on Fri, 2 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $213, select.
Chicago.$228 per passenger.Departing Mon, 14 Apr, returning Wed, 16 Apr.Return flight with Spirit Airlines and Frontier Airlines.Outbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Mon, 14 Apr, arriving in Chicago O'Hare International.Inbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Wed, 16 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $228, select.
Chicago.$250 per passenger.Departing Wed, 23 Apr, returning Tue, 29 Apr.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Wed, 23 Apr, arriving in Chicago O'Hare International.Inbound direct flight with Alaska Airlines departs from Chicago O'Hare International on Tue, 29 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $250, select.
Chicago.$271 per passenger.Departing Wed, 12 Nov, returning Tue, 18 Nov.Return flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 12 Nov, arriving in Chicago O'Hare International.Inbound direct flight with Delta departs from Chicago O'Hare International on Tue, 18 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $271, select.
Chicago.$271 per passenger.Departing Wed, 10 Sep, returning Wed, 24 Sep.Return flight with United.Outbound direct flight with United departs from Seattle / Tacoma International on Wed, 10 Sep, arriving in Chicago O'Hare International.Inbound direct flight with United departs from Chicago O'Hare International on Wed, 24 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $271, select.
Chicago.$271 per passenger.Departing Wed, 1 Oct, returning Tue, 7 Oct.Return flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 1 Oct, arriving in Chicago O'Hare International.Inbound direct flight with Delta departs from Chicago O'Hare International on Tue, 7 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $271, select.
Chicago.$272 per passenger.Departing Wed, 27 Aug, returning Sat, 30 Aug.Return flight with American Airlines.Outbound direct flight with American Airlines departs from Seattle / Tacoma International on Wed, 27 Aug, arriving in Chicago O'Hare International.Inbound direct flight with American Airlines departs from Chicago O'Hare International on Sat, 30 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $272, select.

Find the cheapest month to fly from Seattle / Tacoma International to Chicago O'Hare International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Chicago O'Hare International flights are currently cheapest in April.
Mar
from $274
Apr
from $228
May
from $274
Jun
from $320
Jul
from $340
Aug
from $272
Sep
from $271
Oct
from $271
Nov
from $271
Dec
Find prices
Jan
Find prices
Feb
Find prices

Direct flights from Seattle / Tacoma International to Chicago O'Hare International

Seattle / Tacoma International to Chicago O'Hare International: Alternative routes

Compare routes from Seattle / Tacoma International to Chicago below. You may find an airport to fly into that's cheaper, faster, or easier than Chicago O'Hare International.

Seattle to Chicago: Flight information

The things to know before you go.
Cheapest flight found$204
Cheapest month to flyMarch
Average flight time4 hrs, 7 mins
Most popular airlineQatar Airways
Average flights per week566

Finding cheap flights from Seattle / Tacoma International to Chicago O'Hare International: Frequently asked questions

The best price we found for a return flight from Seattle / Tacoma International to Chicago O'Hare International is $204. 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 7 minutes is the average flight time from Seattle / Tacoma International to Chicago O'Hare International.
Qatar Airways, American Airlines and Air Tahiti Nui fly direct from Seattle / Tacoma International to Chicago O'Hare International.
As of March 2025, there are 427 flights per week flying from Seattle / Tacoma International to Chicago O'Hare International.
The cheapest month to fly from Seattle / Tacoma International to Chicago O'Hare International is usually March 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Chicago O'Hare International Airport on Tuesday, 25 March 2025.
Yes – the average flight time is 4 hours and 7 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 O'Hare International 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.
Currently, Delta offers the cheapest flight tickets to Chicago O'Hare International.

Travelling from Seattle-Tacoma International Airport (SEA) to O'Hare International Airport (ORD): what you need to know

  • 4 hours 3 minutes is the average length of a direct flight from Seattle-Tacoma International Airport to O'Hare International Airport. Chicago is 2 hours ahead of Seattle and is in the UTC-5 timezone.

  • Take your pick of 135 weekly flights from Seattle-Tacoma International Airport to O'Hare International Airport. The 00:28 departure with United Airlines is the earliest flight available between SEA and ORD. United Airlines operates the latest service of the day at 23:59.

  • Travelling during a peak time like a bank holiday? Expect longer queues at security and check-in. To be on the safe side, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • If you'd like a stopover for your flight from Seattle-Tacoma International Airport to O'Hare International Airport, just deselect 'Direct flights only' and explore your options. Here are the top stopovers between SEA and ORD:

    • Minneapolis-St. Paul International Airport

    • Denver International Airport

    • Vancouver International Airport

How to find the cheapest flights from Seattle-Tacoma International Airport (SEA) to O'Hare International Airport (ORD)

  • $100 is currently the lowest price for a one-way ticket from Seattle-Tacoma International Airport to O'Hare International Airport. A return flight starts from $204. These fares can change depending on availability and demand.

  • To get your hands on cheap flight tickets from SEA to ORD, reserve your journey 9 months ahead of the departure date.

  • The cheapest month for tickets from Seattle-Tacoma International Airport to O'Hare International Airport is May. Use the 'Whole month' tool to find the lowest prices if you have flexible travel dates.

  • Create a Price Alert for cheap flight tickets from SEA to ORD. There's no need to check back in every day to find out if fares have dropped. We'll let you know as soon as there's a change in price.

  • Tailor your flights using filters. Pick your departure and arrival times, total journey duration and airlines. You can also sort your results by 'Best,' 'Fastest' or 'Cheapest' flights from Seattle-Tacoma International Airport to O'Hare International Airport.

Handy information about Seattle-Tacoma International Airport (SEA)

  • Travelling from central Seattle to Seattle-Tacoma International Airport takes about 54 minutes on public transport. If you ride-share, drive or grab a cab, you'll cover the 23 kilometres in 18 minutes or so, depending on traffic.

  • After an easy way to start to your holiday? Stay near SEA. Whether you're boarding an early flight from Seattle-Tacoma International Airport to O'Hare International Airport or want to avoid feeling rushed, these hotels are the answer:

Arriving at O'Hare International Airport (ORD)

Getting from O'Hare International Airport (ORD) to central Chicago

  • O'Hare International Airport to central Chicago is around 35 minutes by car. It's approximately 40 kilometres away. Find out what options are available, such as car rentals, cabs or ride-sharing.

  • When travelling on public transport, expect a journey of around 54 minutes.

When to fly to O'Hare International Airport (ORD)

  • The quietest month for a flight from Seattle-Tacoma International Airport to O'Hare International Airport is February, while August is the most popular. Choose the ideal time to visit Chicago based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • The warmest month in Chicago is July, with temperatures ranging between 15ºC and 29ºC. Book your flights from Seattle-Tacoma International Airport to O'Hare International Airport in this month if this is the type of weather you enjoy.

  • If you like cooler conditions, look for a cheap ticket from SEA to ORD in January. Average temperatures are between -12ºC and 3ºC then.

More about Chicago

Complete your Chicago trip with hotels and a car rental

  • Comparing flights is not the only thing we're good at. Once you've secured your cheap ticket to O'Hare International Airport, check out our car rental offers that'll give you the flexibility to see the sights at your own pace. Next, have a look at our exclusive rates for hotels to find your perfect Chicago stay.

Plan the rest of your trip from Seattle to Chicago

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.