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Cheap flights from Seattle to Chicago from C$ 124

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 11/2. 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
8:00 a.m. - 2:11 p.m.
SEA
-
ORD
4h 11mdirect
Alaska Airlines Logo
5:29 p.m. - 8:16 p.m.
ORD
-
SEA
4h 47mdirect
C$ 239Alaska Airlines
Thu, 19 Feb - Thu, 19 Feb
Alaska Airlines Logo
5:55 p.m. - 11:56 p.m.
SEA
-
ORD
4h 01mdirect
Alaska Airlines Logo
1:00 p.m. - 3:46 p.m.
ORD
-
SEA
4h 46mdirect
C$ 246Alaska Airlines
Fri, 27 Feb - Mon, 2 Mar
Delta Logo
5:55 p.m. - 11:53 p.m.
SEA
-
ORD
3h 58mdirect
Delta Logo
2:20 p.m. - 5:00 p.m.
ORD
-
SEA
4h 40mdirect
C$ 247Delta
Thu, 5 Feb - Wed, 11 Feb
United Airlines Logo
12:57 p.m. - 12:28 a.m.
SEA
-
ORD
9h 31m
1 stop
United Airlines Logo
8:50 a.m. - 11:32 a.m.
ORD
-
SEA
4h 42mdirect
C$ 254United Airlines
Sun, 8 Feb - Wed, 11 Feb
Alaska Airlines Logo
9:40 p.m. - 1:11 p.m.
SEA
-
ORD
13h 31m
1 stop
Alaska Airlines Logo
1:00 p.m. - 3:46 p.m.
ORD
-
SEA
4h 46mdirect
C$ 260Alaska Airlines
Wed, 18 Feb - Mon, 2 Mar
Alaska Airlines Logo
12:29 a.m. - 6:40 a.m.
SEA
-
ORD
4h 11mdirect
Alaska Airlines Logo
10:00 a.m. - 12:36 p.m.
ORD
-
SEA
4h 36mdirect
C$ 267Alaska Airlines
Fri, 15 May - Sat, 16 May
Alaska Airlines Logo
8:00 a.m. - 2:11 p.m.
SEA
-
ORD
4h 11mdirect
Alaska Airlines Logo
3:07 p.m. - 11:40 p.m.
ORD
-
SEA
10h 33m
1 stop
C$ 272Alaska Airlines
Fri, 27 Feb - Mon, 2 Mar
Alaska Airlines Logo
12:35 a.m. - 6:39 a.m.
SEA
-
ORD
4h 04mdirect
Alaska Airlines Logo
3:22 p.m. - 6:02 p.m.
ORD
-
SEA
4h 40mdirect
C$ 273Alaska Airlines
Tue, 31 Mar - Tue, 7 Apr
Frontier Logo
1:16 p.m. - 11:14 p.m.
SEA
-
ORD
7h 58m
1 stop
Frontier Logo
6:03 p.m. - 11:19 a.m.
ORD
-
SEA
19h 16m
1 stop
C$ 279Frontier
Thu, 19 Feb - Sun, 22 Feb
Delta Logo
7:15 a.m. - 1:25 p.m.
SEA
-
ORD
4h 10mdirect
Delta Logo
12:46 p.m. - 3:20 p.m.
ORD
-
SEA
4h 34mdirect
C$ 287Delta
Sat, 18 Apr - Fri, 24 Apr

United Airlines flights from Seattle to Chicago

Our best United Airlines deals on Seattle to Chicago flight tickets
United Airlines
8 Feb
SEA12:57 p.m.Seattle/Tacoma Intl
9h 31m
1 stop
ORD12:28 a.m.Chicago O'Hare Intl
11 Feb
ORD8:50 a.m.Chicago O'Hare Intl
4h 42m
SEA11:32 a.m.Seattle/Tacoma Intl
C$ 254
United Airlines
18 Mar
SEA12:36 p.m.Seattle/Tacoma Intl
9h 02m
1 stop
ORD11:38 p.m.Chicago O'Hare Intl
23 Mar
ORD8:01 p.m.Chicago O'Hare Intl
4h 44m
SEA10:45 p.m.Seattle/Tacoma Intl
C$ 296
United Airlines
31 Jan
SEA10:58 a.m.Seattle/Tacoma Intl
4h 07m
ORD5:05 p.m.Chicago O'Hare Intl
7 Feb
ORD3:35 p.m.Chicago O'Hare Intl
4h 39m
SEA6:14 p.m.Seattle/Tacoma Intl
C$ 328

Southwest flights from Seattle to Chicago

Our best Southwest deals on Seattle to Chicago flight tickets
Southwest
11 Feb
SEA8:45 a.m.Seattle/Tacoma Intl
11h 50m
1 stop
ORD10:35 p.m.Chicago O'Hare Intl
16 Feb
ORD3:45 p.m.Chicago O'Hare Intl
10h 25m
1 stop
SEA12:10 a.m.Seattle/Tacoma Intl
C$ 316
Southwest
24 Feb
SEA1:20 p.m.Seattle/Tacoma Intl
7h 15m
1 stop
ORD10:35 p.m.Chicago O'Hare Intl
28 Feb
ORD5:15 p.m.Chicago O'Hare Intl
7h 35m
1 stop
SEA10:50 p.m.Seattle/Tacoma Intl
C$ 323
Southwest
26 Feb
SEA6:30 a.m.Seattle/Tacoma Intl
14h 05m
1 stop
ORD10:35 p.m.Chicago O'Hare Intl
1 Mar
ORD2:15 p.m.Chicago O'Hare Intl
12h 40m
1 stop
SEA12:55 a.m.Seattle/Tacoma Intl
C$ 344

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 14 January 2026.
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

Thu 19/2

8:00 a.m.-2:11 p.m.

Nonstop4h 11m

Chicago O'Hare Intl

Thu 19/2

5:29 p.m.-8:16 p.m.

Nonstop4h 47m

C$ 239

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 27/2

5:55 p.m.-11:56 p.m.

Nonstop4h 01m

Chicago O'Hare Intl

Mon 2/3

1:00 p.m.-3:46 p.m.

Nonstop4h 46m

C$ 246

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 5/2

5:55 p.m.-11:53 p.m.

Nonstop3h 58m

Chicago O'Hare Intl

Wed 11/2

2:20 p.m.-5:00 p.m.

Nonstop4h 40m

C$ 247

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 8/2

12:57 p.m.-12:28 a.m.

1 stop9h 31m

Chicago O'Hare Intl

Wed 11/2

8:50 a.m.-11:32 a.m.

Nonstop4h 42m

C$ 254

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 18/2

9:40 p.m.-1:11 p.m.

1 stop13h 31m

Chicago O'Hare Intl

Mon 2/3

1:00 p.m.-3:46 p.m.

Nonstop4h 46m

C$ 260

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 15/5

12:29 a.m.-6:40 a.m.

Nonstop4h 11m

Chicago O'Hare Intl

Sat 16/5

10:00 a.m.-12:36 p.m.

Nonstop4h 36m

C$ 266

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 27/2

8:00 a.m.-2:11 p.m.

Nonstop4h 11m

Chicago O'Hare Intl

Mon 2/3

3:07 p.m.-11:40 p.m.

1 stop10h 33m

C$ 272

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 31/3

12:35 a.m.-6:39 a.m.

Nonstop4h 04m

Chicago O'Hare Intl

Tue 7/4

3:22 p.m.-6:02 p.m.

Nonstop4h 40m

C$ 273

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 19/2

1:16 p.m.-11:14 p.m.

1 stop7h 58m

Chicago O'Hare Intl

Sun 22/2

6:03 p.m.-11:19 a.m.

1 stop19h 16m

C$ 279

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 18/4

7:15 a.m.-1:25 p.m.

Nonstop4h 10m

Chicago O'Hare Intl

Fri 24/4

12:46 p.m.-3:20 p.m.

Nonstop4h 34m

C$ 287

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 January is another great option to travel to Chicago, with average flight prices from Seattle averaging around C$ 347.

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$ 495. 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 Tuesday because tickets tend to average around C$ 1,001. 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$ 351. 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$ 995 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$ 414 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$ 368 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 50% 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 January 2026, prices for Seattle to Chicago flights are approximately 3% 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$ 457

Fastest flight time

4h 11m

Direct flights

Every day

Airports in Chicago

3 airports
The best one-way flight to Chicago from Seattle in the past 72 hours is C$ 457. The best round-trip flight deal from Seattle to Chicago found on momondo in the last 72 hours is C$ 537.
The fastest flight from Seattle to Chicago takes 4h 11m
Direct flights go from Seattle to Chicago every day.
There are 3 airports in Chicago. From Seattle there are direct flights to 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 4h 11m, 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
Hawaiian AirlinesPriceFrom C$ 121Free CancellationRating
7.8
2,827 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom C$ 214Free CancellationRating
8.0
11,708 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Seattle to Chicago

    Alaska Airlines operates around 19 flights from Seattle to Chicago every week. The average price of these flights found in the last 72 hours has been C$ 371, but momondo users have found Alaska Airlines deals from Seattle to Chicago from as low as C$ 214 round-trip. Alaska Airlines has been scored 8.0/10 in 11,708 reviews.

  • Hawaiian Airlines Flights From Seattle to Chicago

    Across 2,827 Hawaiian Airlines reviews on momondo, the average score is 7.8/10. Hawaiian Airlines flies from Seattle to Chicago about 20 times each week, with ticket deals ranging from C$ 121 to C$ 488. Price data is based on momondo searches in the last 72 hours.

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

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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