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Cheap flights from Seattle to Chicago from C$ 125

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Chicago departing on 27/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
9:00 p.m. - 5:02 a.m.SEA-ORD
6h 02m1 stop
Alaska Airlines Logo
8:00 a.m. - 10:46 a.m.ORD-SEA
4h 46mdirect
C$ 254Alaska Airlines
Find Deal
Tue, 6 Jan - Wed, 7 Jan
United Airlines Logo
12:35 p.m. - 11:14 p.m.SEA-ORD
8h 39m1 stop
United Airlines Logo
1:20 p.m. - 4:01 p.m.ORD-SEA
4h 41mdirect
C$ 256United Airlines
Find Deal
Fri, 23 Jan - Sun, 25 Jan
Delta Logo
11:15 a.m. - 5:21 p.m.SEA-ORD
4h 06mdirect
Delta Logo
7:50 a.m. - 10:41 a.m.ORD-SEA
4h 51mdirect
C$ 262Delta
Find Deal
Thu, 27 Nov - Fri, 5 Dec
Southwest Logo
1:20 p.m. - 10:35 p.m.SEA-ORD
7h 15m1 stop
Southwest Logo
4:25 p.m. - 11:15 p.m.ORD-SEA
8h 50m1 stop
C$ 275Southwest
Find Deal
Thu, 8 Jan - Sun, 11 Jan
Delta Logo
7:20 a.m. - 1:34 p.m.SEA-ORD
4h 14mdirect
Delta Logo
7:50 a.m. - 10:41 a.m.ORD-SEA
4h 51mdirect
C$ 276Delta
Find Deal
Mon, 24 Nov - Wed, 3 Dec
Alaska Airlines Logo
8:30 a.m. - 2:38 p.m.SEA-ORD
4h 08mdirect
Alaska Airlines Logo
6:06 p.m. - 8:56 p.m.ORD-SEA
4h 50mdirect
C$ 282Alaska Airlines
Find Deal
Sun, 25 Jan - Sun, 25 Jan
Hawaiian Airlines Logo
11:00 p.m. - 5:04 a.m.SEA-ORD
4h 04mdirect
Hawaiian Airlines Logo
9:00 a.m. - 5:36 p.m.ORD-SEA
10h 36m1 stop
C$ 294Hawaiian Airlines
Find Deal
Tue, 10 Mar - Wed, 11 Mar
Multiple Airlines Logo
12:25 a.m. - 6:29 a.m.SEA-ORD
4h 04mdirect
Multiple Airlines Logo
6:00 a.m. - 8:45 a.m.ORD-SEA
4h 45mdirect
C$ 329Multiple Airlines
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Sun, 28 Dec - Mon, 5 Jan
Southwest Logo
7:05 a.m. - 10:35 p.m.SEA-ORD
13h 30m1 stop
Southwest Logo
4:25 p.m. - 10:55 p.m.ORD-SEA
8h 30m1 stop
C$ 339Southwest
Find Deal
Wed, 3 Dec - Wed, 10 Dec
Hawaiian Airlines Logo
11:25 a.m. - 11:10 p.m.SEA-ORD
9h 45m1 stop
Hawaiian Airlines Logo
9:00 a.m. - 5:36 p.m.ORD-SEA
10h 36m1 stop
C$ 357Hawaiian Airlines
Find Deal
Tue, 10 Mar - Wed, 11 Mar

Delta flights from Seattle to Chicago

Our best Delta deals on Seattle to Chicago flight tickets
Delta
27 Nov
SEA11:15 a.m.Seattle/Tacoma Intl
4h 06m
ORD5:21 p.m.Chicago O'Hare Intl
5 Dec
ORD7:50 a.m.Chicago O'Hare Intl
4h 51m
SEA10:41 a.m.Seattle/Tacoma Intl
C$ 262
Find similar
Delta
24 Nov
SEA7:20 a.m.Seattle/Tacoma Intl
4h 14m
ORD1:34 p.m.Chicago O'Hare Intl
3 Dec
ORD7:50 a.m.Chicago O'Hare Intl
4h 51m
SEA10:41 a.m.Seattle/Tacoma Intl
C$ 276
Find similar
Delta
22 Feb
SEA5:58 p.m.Seattle/Tacoma Intl
3h 57m
ORD11:55 p.m.Chicago O'Hare Intl
18 Mar
ORD7:30 a.m.Chicago O'Hare Intl
4h 45m
SEA10:15 a.m.Seattle/Tacoma Intl
C$ 298
Find similar

Southwest flights from Seattle to Chicago

Our best Southwest deals on Seattle to Chicago flight tickets
Southwest
8 Jan
SEA1:20 p.m.Seattle/Tacoma Intl
7h 15m
1 stop
ORD10:35 p.m.Chicago O'Hare Intl
11 Jan
ORD4:25 p.m.Chicago O'Hare Intl
8h 50m
1 stop
SEA11:15 p.m.Seattle/Tacoma Intl
C$ 275
Find similar
Southwest
3 Dec
SEA7:05 a.m.Seattle/Tacoma Intl
13h 30m
1 stop
ORD10:35 p.m.Chicago O'Hare Intl
10 Dec
ORD4:25 p.m.Chicago O'Hare Intl
8h 30m
1 stop
SEA10:55 p.m.Seattle/Tacoma Intl
C$ 339
Find similar
Southwest
22 Feb
SEA5:00 a.m.Seattle/Tacoma Intl
7h 05m
1 stop
ORD2:05 p.m.Chicago O'Hare Intl
28 Feb
ORD2:15 p.m.Chicago O'Hare Intl
10h 35m
1 stop
SEA10:50 p.m.Seattle/Tacoma Intl
C$ 373
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Chicago that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 3 November 2025.
Use the filters below to find and compare flights from Seattle to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 6/1

9:00 p.m.-5:02 a.m.

1 stop6h 02m

Chicago O'Hare Intl

Wed 7/1

8:00 a.m.-10:46 a.m.

Nonstop4h 46m

C$ 254

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 23/1

12:35 p.m.-11:14 p.m.

1 stop8h 39m

Chicago O'Hare Intl

Sun 25/1

1:20 p.m.-4:01 p.m.

Nonstop4h 41m

C$ 256

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 27/11

11:15 a.m.-5:21 p.m.

Nonstop4h 06m

Chicago O'Hare Intl

Fri 5/12

7:50 a.m.-10:41 a.m.

Nonstop4h 51m

C$ 262

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 8/1

1:20 p.m.-10:35 p.m.

1 stop7h 15m

Chicago O'Hare Intl

Sun 11/1

4:25 p.m.-11:15 p.m.

1 stop8h 50m

C$ 275

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 24/11

7:20 a.m.-1:34 p.m.

Nonstop4h 14m

Chicago O'Hare Intl

Wed 3/12

7:50 a.m.-10:41 a.m.

Nonstop4h 51m

C$ 276

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 25/1

8:30 a.m.-2:38 p.m.

Nonstop4h 08m

Chicago O'Hare Intl

Sun 25/1

6:06 p.m.-8:56 p.m.

Nonstop4h 50m

C$ 282

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 10/3

11:00 p.m.-5:04 a.m.

Nonstop4h 04m

Chicago O'Hare Intl

Wed 11/3

9:00 a.m.-5:36 p.m.

1 stop10h 36m

C$ 294

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 28/12

12:25 a.m.-6:29 a.m.

Nonstop4h 04m

Chicago O'Hare Intl

Mon 5/1

6:00 a.m.-8:45 a.m.

Nonstop4h 45m

C$ 329

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 3/12

7:05 a.m.-10:35 p.m.

1 stop13h 30m

Chicago O'Hare Intl

Wed 10/12

4:25 p.m.-10:55 p.m.

1 stop8h 30m

C$ 339

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 10/3

11:25 a.m.-11:10 p.m.

1 stop9h 45m

Chicago O'Hare Intl

Wed 11/3

9:00 a.m.-5:36 p.m.

1 stop10h 36m

C$ 357

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chicago from

How to get the cheapest flight ticket from Seattle to Chicago

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Chicago?

The month of February is another great option to travel to Chicago, with average flight prices from Seattle averaging around C$ 368.

What is the cheapest day to depart on your flight to Chicago?

The cheapest day to depart on your flight to Chicago is on a Thursday when prices can be found for as low as C$ 500. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around C$ 914. These prices are subject to change though, so be sure to set up a Price Alert for flights to Chicago.

What is the cheapest time of day to depart on your flight to Chicago?

In the afternoon is the cheapest time of day to fly from Seattle to Chicago when you can find flight prices for as low as C$ 354. Flying to Chicago in the afternoon is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to Chicago, so prices are often more expensive at around C$ 942 per ticket.

What is the cheapest Seattle/Tacoma Intl to Chicago flight route?

Fly from Seattle/Tacoma Intl to Chicago Midway for the best Seattle/Tacoma Intl - Chicago flight prices

How far in advance should I book a flight to Chicago?

You are more likely to see cheaper flights to Chicago from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around C$ 433 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Seattle for as low as C$ 374 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Chicago flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Chicago flights?

You could potentially save up to 56% on your flight if you consider stops on a Seattle to Chicago flight.

How have Seattle to Chicago flight prices changed over time?

As of November 2025, prices for Seattle to Chicago flights are approximately 10% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Chicago

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Chicago according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Chicago (SEA to CHI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Chicago

Best price found

C$ 375

Fastest flight time

3h 57m

Direct flights

Every day

Airports in Chicago

1 airport
The best one-way flight to Chicago from Seattle in the past 72 hours is C$ 375. The best round-trip flight deal from Seattle to Chicago found on momondo in the last 72 hours is C$ 272.
The fastest flight from Seattle to Chicago takes 3h 57m
Direct flights go from Seattle to Chicago every day.
There is 1 airport near Chicago: Chicago O'Hare Intl (ORD)
Search flight deals

  • How far is Seattle/Tacoma Intl to Chicago by plane?

    A flight from Seattle/Tacoma Intl to Chicago will travel around 2787.8 km. Flights usually cover this in 3h 57m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Chicago?

    Prices for flights from Seattle/Tacoma Intl Airport to Chicago are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Chicago?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Chicago?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Chicago.

  • What documentation or ID do you need to fly to Chicago?

    The necessary travel and health documents for your Chicago trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Chicago?

  • What is the most popular airline from Seattle to Chicago?

Best airlines flying from Seattle to Chicago

Compare and see reviews for airlines that fly from Seattle to Chicago with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom C$ 216Free CancellationRating
8.0
11,236 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Seattle to Chicago

    Alaska Airlines operates around 14 flights from Seattle to Chicago every week. The average price of these flights found in the last 72 hours has been C$ 368, but momondo users have found Alaska Airlines deals from Seattle to Chicago from as low as C$ 216 round-trip. Alaska Airlines has been scored 8.0/10 in 11,236 reviews.

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Munster
Hammond
Merrillville

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Chicago?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Chicago . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Chicago with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Chicago from Seattle with this policy.

How can momondo help me find flights from Seattle to Chicago?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Chicago.

I’m not ready to book a flight from Seattle to Chicago right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Chicago from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Chicago trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 25.6 km from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport