How many flights depart from Seattle to Chicago on average per day?

As of December 2025, there are 38 flights per day flying from Seattle to Chicago. The most common time of day flights depart is 10:00a.m., with 69% of flights taking off at noon.

Which layover airport has the shortest connection time from Seattle to Chicago?

Las Vegas (LAS) has the shortest average layover time for this route: 2h 20m.

How many flights depart from Seattle to Chicago on average per week?

267 flights are operational weekly from Seattle to Chicago as of December 2025. The most popular departure day for this route is Fri, with 19% of flights per week taking off on this day.

Which airport is the most popular layover for flights between Seattle and Chicago?

Denver (DEN) was the most common stop: 75% of momondo users choosing one-stop flights on this route connected there.

Which layover airport has the shortest travel time from Seattle to Chicago?

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 7h 20m.

Which layover airport offers the lowest fares from Seattle to Chicago?

Flights via Las Vegas (LAS) offer the lowest average round-trip price of C$ 348.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Chicago?

Delta and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Chicago

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?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Chicago is 2 as of December 2025.

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.

C$ 136 Cheap Flights from Seattle to Chicago in 2025/26

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Find the cheapest flights from Seattle to Chicago

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:45 p.m. - 1:10 p.m.

SEA

ORD

13h 25m1 stop

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

ORD

SEA

4h 46mdirect

C$ 244Alaska Airlines

Sat, 17 Jan - Wed, 21 Jan

7:00 a.m. - 1:08 p.m.

SEA

ORD

4h 08mdirect

7:54 p.m. - 10:43 p.m.

ORD

SEA

4h 49mdirect

C$ 248United Airlines

Mon, 19 Jan - Mon, 26 Jan

8:45 a.m. - 10:35 p.m.

SEA

ORD

11h 50m1 stop

2:15 p.m. - 9:10 p.m.

ORD

SEA

8h 55m1 stop

C$ 251Southwest

Tue, 13 Jan - Sat, 17 Jan

12:32 p.m. - 11:26 p.m.

SEA

ORD

8h 54m1 stop

7:59 p.m. - 10:43 p.m.

ORD

SEA

4h 44mdirect

C$ 255United Airlines

Sat, 21 Feb - Mon, 23 Feb

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

SEA

ORD

4h 11mdirect

3:07 p.m. - 10:39 p.m.

ORD

SEA

9h 32m1 stop

C$ 256Alaska Airlines

Sat, 21 Feb - Wed, 25 Feb

7:50 p.m. - 1:10 p.m.

SEA

ORD

15h 20m1 stop

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

ORD

SEA

4h 46mdirect

C$ 257Alaska Airlines

Wed, 14 Jan - Sat, 17 Jan

5:00 a.m. - 2:45 p.m.

SEA

ORD

7h 45m1 stop

7:15 a.m. - 3:55 p.m.

ORD

SEA

10h 40m1 stop

C$ 259Southwest

Sat, 21 Feb - Fri, 27 Feb

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

SEA

ORD

3h 58mdirect

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

ORD

SEA

4h 40mdirect

C$ 271Delta

Sun, 11 Jan - Wed, 14 Jan

5:50 p.m. - 11:50 p.m.

SEA

ORD

4h 00mdirect

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

ORD

SEA

4h 50mdirect

C$ 278Alaska Airlines

Fri, 16 Jan - Mon, 2 Feb

9:45 p.m. - 1:10 p.m.

SEA

ORD

13h 25m1 stop

3:44 p.m. - 10:15 p.m.

ORD

SEA

8h 31m1 stop

C$ 284Alaska Airlines

Sat, 17 Jan - Wed, 21 Jan

United Airlines flights from Seattle to Chicago

Our best United Airlines deals on Seattle to Chicago flight tickets

United Airlines

19 Jan

SEA7:00 a.m.Seattle/Tacoma Intl

4h 08m

ORD1:08 p.m.Chicago O'Hare Intl

26 Jan

ORD7:54 p.m.Chicago O'Hare Intl

4h 49m

SEA10:43 p.m.Seattle/Tacoma Intl

C$ 248

Find similar

United Airlines

20 Jan

SEA12:35 p.m.Seattle/Tacoma Intl

8h 39m

1 stop

ORD11:14 p.m.Chicago O'Hare Intl

27 Jan

ORD1:20 p.m.Chicago O'Hare Intl

4h 41m

SEA4:01 p.m.Seattle/Tacoma Intl

C$ 252

Find similar

United Airlines

21 Feb

SEA12:32 p.m.Seattle/Tacoma Intl

8h 54m

1 stop

ORD11:26 p.m.Chicago O'Hare Intl

23 Feb

ORD7:59 p.m.Chicago O'Hare Intl

4h 44m

SEA10:43 p.m.Seattle/Tacoma Intl

C$ 255

Find similar

Southwest flights from Seattle to Chicago

Our best Southwest deals on Seattle to Chicago flight tickets

Southwest

13 Jan

SEA8:45 a.m.Seattle/Tacoma Intl

11h 50m

1 stop

ORD10:35 p.m.Chicago O'Hare Intl

17 Jan

ORD2:15 p.m.Chicago O'Hare Intl

8h 55m

1 stop

SEA9:10 p.m.Seattle/Tacoma Intl

C$ 251

Find similar

Southwest

21 Feb

SEA5:00 a.m.Seattle/Tacoma Intl

7h 45m

1 stop

ORD2:45 p.m.Chicago O'Hare Intl

27 Feb

ORD7:15 a.m.Chicago O'Hare Intl

10h 40m

1 stop

SEA3:55 p.m.Seattle/Tacoma Intl

C$ 259

Find similar

Southwest

14 Jan

SEA1:20 p.m.Seattle/Tacoma Intl

7h 15m

1 stop

ORD10:35 p.m.Chicago O'Hare Intl

17 Jan

ORD2:15 p.m.Chicago O'Hare Intl

8h 55m

1 stop

SEA9:10 p.m.Seattle/Tacoma Intl

C$ 288

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 17/1

9:45 p.m.-1:10 p.m.

1 stop13h 25m

Chicago O'Hare Intl

Wed 21/1

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

Nonstop4h 46m

C$ 244

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 19/1

7:00 a.m.-1:08 p.m.

Nonstop4h 08m

Chicago O'Hare Intl

Mon 26/1

7:54 p.m.-10:43 p.m.

Nonstop4h 49m

C$ 248

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 13/1

8:45 a.m.-10:35 p.m.

1 stop11h 50m

Chicago O'Hare Intl

Sat 17/1

2:15 p.m.-9:10 p.m.

1 stop8h 55m

C$ 251

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 21/2

12:32 p.m.-11:26 p.m.

1 stop8h 54m

Chicago O'Hare Intl

Mon 23/2

7:59 p.m.-10:43 p.m.

Nonstop4h 44m

C$ 255

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 21/2

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

Nonstop4h 11m

Chicago O'Hare Intl

Wed 25/2

3:07 p.m.-10:39 p.m.

1 stop9h 32m

C$ 256

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 14/1

7:50 p.m.-1:10 p.m.

1 stop15h 20m

Chicago O'Hare Intl

Sat 17/1

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

Nonstop4h 46m

C$ 257

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 21/2

5:00 a.m.-2:45 p.m.

1 stop7h 45m

Chicago O'Hare Intl

Fri 27/2

7:15 a.m.-3:55 p.m.

1 stop10h 40m

C$ 259

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 11/1

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

Nonstop3h 58m

Chicago O'Hare Intl

Wed 14/1

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

Nonstop4h 40m

C$ 271

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 16/1

5:50 p.m.-11:50 p.m.

Nonstop4h 00m

Chicago O'Hare Intl

Mon 2/2

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

Nonstop4h 50m

C$ 278

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 17/1

9:45 p.m.-1:10 p.m.

1 stop13h 25m

Chicago O'Hare Intl

Wed 21/1

3:44 p.m.-10:15 p.m.

1 stop8h 31m

C$ 284

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

Other information

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$ 361.

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$ 520. 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$ 989. 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$ 348. 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$ 989 per ticket.

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

Fly from Seattle/Tacoma Intl to Chicago O'Hare Intl 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$ 421 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$ 365 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 24% 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 December 2025, prices for Seattle to Chicago flights are approximately 27% 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$ 453
Fastest flight time	3h 57m
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$ 453. The best round-trip flight deal from Seattle to Chicago found on momondo in the last 72 hours is C$ 955.

The fastest flight from Seattle to Chicago takes 3h 57m

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 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?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Chicago is 2 as of December 2025.
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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to Chicago is Boeing 737-800 (24.37% of total bookings). The next most popular plane models are Airbus A321neo (17.19%), Boeing 737-800 Passenger/BBJ2 (winglets) (9.93%), and Boeing 737 MAX 9 (9.74%).
What is the most popular airline from Seattle to Chicago?
momondo data reveals that the most frequently booked airline on the route from Seattle to Chicago is Alaska Airlines, representing 59% of all bookings. The subsequent popular airlines are American Airlines at 15%, Delta at 13%, and Frontier at 13%.

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 Airlines	PriceFrom C$ 120	Free Cancellation	Rating 7.8 2,820 reviews		Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom C$ 213	Free Cancellation	Rating 8.0 11,518 reviews		Search Alaska Airlines flights

Alaska Airlines Flights From Seattle to Chicago
Alaska Airlines operates around 20 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$ 213 round-trip. Alaska Airlines has been scored 8.0/10 in 11,518 reviews.
Hawaiian Airlines Flights From Seattle to Chicago
Across 2,820 Hawaiian Airlines reviews on momondo, the average score is 7.8/10. Hawaiian Airlines flies from Seattle to Chicago about 31 times each week, with ticket deals ranging from C$ 120 to C$ 484. Price data is based on momondo searches in the last 72 hours.

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.

Start using Trips

Find my bookings

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Daily price changes in your inbox - only with Price Alerts.

1 adult

Thu 22/1

Thu 29/1

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Chicago Midway Airport

Chicago O'Hare Intl Airport

Popular Cities in the United States

Flights to Fort Lauderdalefrom C$ 146

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Flights to New Yorkfrom C$ 241

Flights to Las Vegasfrom C$ 127

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Flights to Miamifrom C$ 262

Flights to San Franciscofrom C$ 135

Flights to Honolulufrom C$ 300

Flights to Phoenixfrom C$ 146

Flights to Tampafrom C$ 190

Flights to Houstonfrom C$ 211

Flights to Seattlefrom C$ 160

Cheap flights from Seattle to Chicago from C$ 136

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 13/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Seattle to Chicago

Cheap round-trip flights

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Cheap last-minute flights

Cheap direct flights

United Airlines flights from Seattle to Chicago

Our best United Airlines deals on Seattle to Chicago flight tickets

Southwest flights from Seattle to Chicago

Our best Southwest deals on Seattle to Chicago flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Seattle to Chicago that are best for you.

See travel insights to Chicago from

How to get the cheapest flight ticket from Seattle to Chicago

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$ 361.

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

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

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

Fly from Seattle/Tacoma Intl to Chicago O'Hare Intl for the best Seattle/Tacoma Intl - Chicago flight prices

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

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 24% 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 December 2025, prices for Seattle to Chicago flights are approximately 27% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Chicago?

Delta and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Chicago

Which airport is the most popular layover for flights between Seattle and Chicago?

Denver (DEN) was the most common stop: 75% of momondo users choosing one-stop flights on this route connected there.

Which layover airport offers the lowest fares from Seattle to Chicago?

Flights via Las Vegas (LAS) offer the lowest average round-trip price of C$ 348.

Which layover airport has the shortest travel time from Seattle to Chicago?

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 7h 20m.

Which layover airport has the shortest connection time from Seattle to Chicago?

Las Vegas (LAS) has the shortest average layover time for this route: 2h 20m.

How many flights depart from Seattle to Chicago on average per day?

As of December 2025, there are 38 flights per day flying from Seattle to Chicago. The most common time of day flights depart is 10:00a.m., with 69% of flights taking off at noon.

How many flights depart from Seattle to Chicago on average per week?

267 flights are operational weekly from Seattle to Chicago as of December 2025. The most popular departure day for this route is Fri, with 19% of flights per week taking off on this day.

When to book flights from Seattle to Chicago

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

Fastest flight time

Direct flights

Airports in Chicago

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

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

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?

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

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

Alaska Airlines Flights From Seattle to Chicago

Hawaiian Airlines Flights From Seattle to Chicago

Travelling to a place near Chicago?

Why use momondo?

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

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

How can momondo help me find flights 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?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Fly into one of these airports located in Chicago