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

37 flights are operational daily from Seattle to Chicago as of November 2025. The most popular departure time for this route is 10:00AM, with 55% of flights per day taking off at noon.

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

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

What airlines fly to Chicago?

Alaska Airlines, Delta and United Airlines are the top three most popular airlines that fly to Chicago from Seattle according to our data. Alaska Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Chicago. Keep in mind that there are 8 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

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

As of November 2025, 260 flights take off from Seattle and land in Chicago each week. The most common flight departure day for this route is Mon, with 19% of weekly flights taking off on this day.

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 refresh daily.

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

As of November 2025, there are 8 operators available to choose from 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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.

$89 Cheap Flights from Seattle to Chicago in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

5:55 pm - 11:53 pmSEA-ORD

3h 58mnonstop

7:30 am - 10:15 amORD-SEA

4h 45mnonstop

$177Delta

Find Deal

Fri, Jan 16 - Mon, Jan 19

6:35 am - 12:30 pmSEA-MDW

3h 55mnonstop

10:35 am - 1:15 pmMDW-SEA

4h 40mnonstop

$177Southwest

Find Deal

Thu, Jan 1 - Wed, Jan 7

12:48 pm - 11:08 amSEA-MDW

20h 20m1 stop

6:15 am - 4:36 pmMDW-SEA

12h 21m1 stop

$178Frontier

Find Deal

Sat, Dec 13 - Mon, Dec 15

12:48 pm - 12:12 amSEA-ORD

9h 24m1 stop

6:00 am - 8:41 amORD-SEA

4h 41mnonstop

$178Multiple Airlines

Find Deal

Sun, Dec 7 - Sun, Dec 14

3:40 pm - 6:46 pmSEA-ORD

25h 06m2 stops

7:00 am - 11:53 amORD-SEA

6h 53m1 stop

$179Frontier

Find Deal

Mon, Dec 8 - Mon, Dec 15

12:18 am - 6:21 amSEA-ORD

4h 03mnonstop

12:59 pm - 10:06 amORD-SEA

23h 07m1 stop

$180Multiple Airlines

Find Deal

Sat, Dec 6 - Sun, Dec 14

11:01 am - 1:58 pmSEA-ORD

24h 57m2 stops

7:00 am - 11:53 amORD-SEA

6h 53m1 stop

$181Multiple Airlines

Find Deal

Mon, Dec 8 - Mon, Dec 15

12:40 pm - 12:28 amSEA-ORD

9h 48m1 stop

7:54 pm - 10:43 pmORD-SEA

4h 49mnonstop

$183United Airlines

Find Deal

Fri, Jan 9 - Sun, Jan 11

12:18 am - 6:21 amSEA-ORD

4h 03mnonstop

8:00 am - 10:46 amORD-SEA

4h 46mnonstop

$185Alaska Airlines

Find Deal

Sun, Dec 7 - Thu, Jan 8

4:21 pm - 10:30 pmSEA-ORD

4h 09mnonstop

5:51 pm - 8:35 pmORD-SEA

4h 44mnonstop

$186Hawaiian Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

Hawaiian Airlines flights from Seattle to Chicago

Our best Hawaiian Airlines deals on Seattle to Chicago flight tickets

Hawaiian Airlines

Dec 4

SEA4:21 pmSeattle/Tacoma Intl

4h 09m

ORD10:30 pmChicago O'Hare Intl

Dec 8

ORD5:51 pmChicago O'Hare Intl

4h 44m

SEA8:35 pmSeattle/Tacoma Intl

$186

Find similar

Hawaiian Airlines

Dec 4

SEA5:50 pmSeattle/Tacoma Intl

4h 09m

ORD11:59 pmChicago O'Hare Intl

Dec 8

ORD8:00 amChicago O'Hare Intl

4h 52m

SEA10:52 amSeattle/Tacoma Intl

$192

Find similar

Hawaiian Airlines

Jan 1

SEA5:49 pmSeattle/Tacoma Intl

4h 10m

ORD11:59 pmChicago O'Hare Intl

Jan 7

ORD3:44 pmChicago O'Hare Intl

8h 31m

1 stop

SEA10:15 pmSeattle/Tacoma Intl

$224

Find similar

American Airlines flights from Seattle to Chicago

Our best American Airlines deals on Seattle to Chicago flight tickets

American Airlines

Jan 1

SEA2:52 pmSeattle/Tacoma Intl

4h 27m

ORD9:19 pmChicago O'Hare Intl

Jan 7

ORD10:27 amChicago O'Hare Intl

4h 41m

SEA1:08 pmSeattle/Tacoma Intl

$189

Find similar

American Airlines

Dec 3

SEA12:38 amSeattle/Tacoma Intl

4h 04m

ORD6:42 amChicago O'Hare Intl

Dec 8

ORD7:15 amChicago O'Hare Intl

4h 43m

SEA9:58 amSeattle/Tacoma Intl

$198

Find similar

American Airlines

Nov 27

SEA10:39 amSeattle/Tacoma Intl

4h 06m

ORD4:45 pmChicago O'Hare Intl

Dec 2

ORD7:15 amChicago O'Hare Intl

4h 50m

SEA10:05 amSeattle/Tacoma Intl

$201

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 1/16

5:55 pm-11:53 pm

Nonstop3h 58m

Chicago O'Hare Intl

Mon 1/19

7:30 am-10:15 am

Nonstop4h 45m

$177

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Thu 1/1

6:35 am-12:30 pm

Nonstop3h 55m

Chicago Midway

Wed 1/7

10:35 am-1:15 pm

Nonstop4h 40m

$177

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Sat 12/13

12:48 pm-11:08 am

1 stop20h 20m

Chicago Midway

Mon 12/15

6:15 am-4:36 pm

1 stop12h 21m

$178

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 12/7

12:48 pm-12:12 am

1 stop9h 24m

Chicago O'Hare Intl

Sun 12/14

6:00 am-8:41 am

Nonstop4h 41m

$178

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 12/8

3:40 pm-6:46 pm

2 stops25h 06m

Chicago O'Hare Intl

Mon 12/15

7:00 am-11:53 am

1 stop6h 53m

$179

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 12/6

12:18 am-6:21 am

Nonstop4h 03m

Chicago O'Hare Intl

Sun 12/14

12:59 pm-10:06 am

1 stop23h 07m

$180

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 12/8

11:01 am-1:58 pm

2 stops24h 57m

Chicago O'Hare Intl

Mon 12/15

7:00 am-11:53 am

1 stop6h 53m

$181

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 1/9

12:40 pm-12:28 am

1 stop9h 48m

Chicago O'Hare Intl

Sun 1/11

7:54 pm-10:43 pm

Nonstop4h 49m

$183

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 12/7

12:18 am-6:21 am

Nonstop4h 03m

Chicago O'Hare Intl

Thu 1/8

8:00 am-10:46 am

Nonstop4h 46m

$185

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 12/4

4:21 pm-10:30 pm

Nonstop4h 09m

Chicago O'Hare Intl

Mon 12/8

5:51 pm-8:35 pm

Nonstop4h 44m

$186

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

Other information

What is the cheapest month to fly to Chicago?

The month of January is, on average, the cheapest month to fly to Chicago from Seattle, with most prices found around $229. If you’re not able to fly to Chicago in January, then February is your next best option. Flight prices from Seattle to Chicago during February average around $268.

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 Wednesday when prices can be found for as low as $395. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Chicago for around $494.

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

Our most recent data shows that the best time of day to fly to Chicago is in the afternoon. Flights from Seattle to Chicago during this time can be as low as $290. In contrast, the most expensive time of day to depart to Chicago is in the morning when prices are around $453.

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 $308 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 $258 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.

How have Seattle to Chicago flight prices changed over time?

As of November 2025, prices for Seattle to Chicago flights are approximately 19% 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	$168
Fastest flight time	3h 50m
Direct flights	Every day
Airports in Chicago	2 airports

The best one-way flight to Chicago from Seattle in the past 72 hours is $168. The best round-trip flight deal from Seattle to Chicago found on momondo in the last 72 hours is $312.

The fastest flight from Seattle to Chicago takes 3h 50m

Direct flights go from Seattle to Chicago every day.

There are 2 airports near Chicago: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)

Search flight deals

How far is Seattle/Tacoma Intl to Chicago by plane?
Chicago is 1732.3 mi away from Seattle/Tacoma Intl. In terms of flight time, this usually takes a little over 3h 55m.
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 refresh daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Chicago?
As of November 2025, there are 8 operators available to choose from 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 flights between Seattle and Chicago, the leading plane model is Boeing 737-800, making up 20.01% of the total bookings. Other popular models include Boeing 737 MAX 9 with 16.92%, Boeing 737-900 Passenger/BBJ3 (winglets) with 13.71%, and Airbus A321neo with 11.90%.
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 33% of all bookings. The subsequent popular airlines are Delta at 25%, United Airlines at 17%, and American Airlines at 15%.

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
Spirit Airlines	PriceFrom $107	Free Cancellation	Rating 6.3 8,137 reviews	Search Spirit Airlines flights
Hawaiian Airlines	PriceFrom $121	Free Cancellation	Rating 7.8 2,809 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $124	Free Cancellation	Rating 7.9 8,008 reviews	Search Delta flights
Frontier	PriceFrom $137	Free Cancellation	Rating 5.8 3,113 reviews	Search Frontier flights
United Airlines	PriceFrom $167	Free Cancellation	Rating 7.4 9,015 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $177	Free Cancellation	Rating 8.0 11,275 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $179	Free Cancellation	Rating 8.0 4,235 reviews	Search Southwest flights
American Airlines	PriceFrom $181	Free Cancellation	Rating 7.2 11,050 reviews	Search American Airlines flights

Alaska Airlines Flights From Seattle to Chicago
Alaska Airlines flies from Seattle to Chicago around 13 times per week, with 11,275 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from Seattle to Chicago in the last 72 hours was $177 (round-trip), much lower than the average airfare cost of $331 for Alaska Airlines flights on this route.
Southwest Flights From Seattle to Chicago
$179 is the best Southwest flight deal from Seattle to Chicago found on momondo over the last 72 hours. The average Southwest ticket price found was closer to $370, however, with flight time and availability significantly affecting the price. Southwest (8.0/10 from 4,235 user reviews) flies into Chicago from Seattle 7 times in an average week so prices can vary.

Merrillville

New Buffalo

Hammond

Benton Harbor

Saint Joseph

Portage

Lansing

Schererville

Valparaiso

Crown Point

Munster

Chesterton

Monticello

Porter

Griffith

Saint John

Why use momondo?

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

Finding the right flight to Chicago from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chicago quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Chicago from Seattle which offer a flexible booking policy as well as other useful filters and features.

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 can track prices for Seattle to Chicago flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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

Get notified when prices go down

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

1 adult

Fri 12/12

Fri 12/19

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Cheap flights from Seattle to Chicago from $89

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 1/6. 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 and deals

Big names and 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

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Hawaiian Airlines flights from Seattle to Chicago

Our best Hawaiian Airlines deals on Seattle to Chicago flight tickets

American Airlines flights from Seattle to Chicago

Our best American Airlines 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

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, on average, the cheapest month to fly to Chicago from Seattle, with most prices found around $229. If you’re not able to fly to Chicago in January, then February is your next best option. Flight prices from Seattle to Chicago during February average around $268.

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?

Our most recent data shows that the best time of day to fly to Chicago is in the afternoon. Flights from Seattle to Chicago during this time can be as low as $290. In contrast, the most expensive time of day to depart to Chicago is in the morning when prices are around $453.

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?

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.

How have Seattle to Chicago flight prices changed over time?

As of November 2025, prices for Seattle to Chicago flights are approximately 19% 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, Southwest, and American Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Chicago

What airlines fly to Chicago?

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

37 flights are operational daily from Seattle to Chicago as of November 2025. The most popular departure time for this route is 10:00AM, with 55% of flights per day taking off at noon.

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

As of November 2025, 260 flights take off from Seattle and land in Chicago each week. The most common flight departure day for this route is Mon, with 19% of weekly flights 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

Southwest Flights From Seattle to Chicago

Traveling 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

Airports listed have a maximum distance of 78.5 mi from Chicago