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Cheap flights from Seattle to Chicago from $94

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 2/16. 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

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Delta Logo
11:10 pm - 9:41 amSEA-ORD
8h 31m1 stop
Delta Logo
8:50 am - 2:45 pmORD-SEA
7h 55m1 stop
$177Delta
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Thu, Feb 5 - Sun, Feb 8
Delta Logo
6:05 am - 5:34 pmSEA-MDW
9h 29m1 stop
Delta Logo
1:49 pm - 8:46 pmMDW-SEA
8h 57m1 stop
$177Delta
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Wed, Jan 7 - Tue, Jan 13
Multiple Airlines Logo
12:26 pm - 10:56 pmSEA-ORD
8h 30m1 stop
Multiple Airlines Logo
8:00 am - 10:46 amORD-SEA
4h 46mnonstop
$178Multiple Airlines
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Fri, Jan 9 - Mon, Jan 12
Southwest Logo
12:45 pm - 5:00 amSEA-MDW
14h 15m2 stops
Southwest Logo
6:10 am - 12:20 pmMDW-SEA
8h 10m1 stop
$179Southwest
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Tue, Jan 6 - Tue, Jan 13
Frontier Logo
12:26 pm - 10:56 pmSEA-ORD
8h 30m1 stop
Frontier Logo
12:00 pm - 11:09 amORD-SEA
25h 09m2 stops
$179Frontier
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Fri, Jan 9 - Wed, Jan 14
Southwest Logo
8:45 am - 8:40 pmSEA-MDW
9h 55m2 stops
Southwest Logo
3:25 pm - 11:15 pmMDW-SEA
9h 50m1 stop
$180Southwest
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Wed, Jan 7 - Sun, Jan 11
American Airlines Logo
2:04 pm - 8:15 pmSEA-ORD
4h 11mnonstop
American Airlines Logo
7:36 pm - 10:20 pmORD-SEA
4h 44mnonstop
$181American Airlines
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Fri, Jan 16 - Mon, Jan 19
American Airlines Logo
12:14 am - 6:07 amSEA-ORD
3h 53mnonstop
American Airlines Logo
7:36 pm - 10:20 pmORD-SEA
4h 44mnonstop
$182American Airlines
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Sun, Jan 4 - Sat, Jan 10
Alaska Airlines Logo
6:00 am - 12:13 pmSEA-ORD
4h 13mnonstop
Alaska Airlines Logo
6:06 pm - 8:56 pmORD-SEA
4h 50mnonstop
$184Alaska Airlines
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Mon, Dec 29 - Fri, Jan 9
Alaska Airlines Logo
5:50 pm - 11:50 pmSEA-ORD
4h 00mnonstop
Alaska Airlines Logo
9:00 am - 5:29 pmORD-SEA
10h 29m1 stop
$185Alaska Airlines
Find Deal
Sun, Feb 1 - Tue, Feb 10

Alaska Airlines flights from Seattle to Chicago

Our best Alaska Airlines deals on Seattle to Chicago flight tickets
Alaska Airlines
Dec 29
SEA6:00 amSeattle/Tacoma Intl
4h 13m
ORD12:13 pmChicago O'Hare Intl
Jan 9
ORD6:06 pmChicago O'Hare Intl
4h 50m
SEA8:56 pmSeattle/Tacoma Intl
$184
Find similar
Alaska Airlines
Feb 1
SEA5:50 pmSeattle/Tacoma Intl
4h 00m
ORD11:50 pmChicago O'Hare Intl
Feb 10
ORD9:00 amChicago O'Hare Intl
10h 29m
1 stop
SEA5:29 pmSeattle/Tacoma Intl
$185
Find similar
Alaska Airlines
Jan 15
SEA11:00 amSeattle/Tacoma Intl
4h 10m
ORD5:10 pmChicago O'Hare Intl
Jan 18
ORD2:06 pmChicago O'Hare Intl
6h 37m
1 stop
SEA6:43 pmSeattle/Tacoma Intl
$187
Find similar

Delta flights from Seattle to Chicago

Our best Delta deals on Seattle to Chicago flight tickets
Delta
Jan 7
SEA6:05 amSeattle/Tacoma Intl
9h 29m
1 stop
MDW5:34 pmChicago Midway
Jan 13
MDW9:32 amChicago Midway
6h 49m
1 stop
SEA2:21 pmSeattle/Tacoma Intl
$177
Find similar
Delta
Jan 1
SEA12:55 amSeattle/Tacoma Intl
6h 30m
1 stop
ORD9:25 amChicago O'Hare Intl
Jan 6
ORD2:20 pmChicago O'Hare Intl
4h 40m
SEA5:00 pmSeattle/Tacoma Intl
$190
Find similar
Delta
Jan 2
SEA5:55 pmSeattle/Tacoma Intl
4h 04m
ORD11:59 pmChicago O'Hare Intl
Jan 10
ORD7:30 amChicago O'Hare Intl
4h 45m
SEA10:15 amSeattle/Tacoma Intl
$195
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 832,500 searches. Data last updated December 3, 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

Thu 2/5

11:10 pm-9:41 am

1 stop8h 31m

Chicago O'Hare Intl

Sun 2/8

8:50 am-2:45 pm

1 stop7h 55m

$177

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Wed 1/7

6:05 am-5:34 pm

1 stop9h 29m

Chicago Midway

Tue 1/13

1:49 pm-8:46 pm

1 stop8h 57m

$177

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 1/9

12:26 pm-10:56 pm

1 stop8h 30m

Chicago O'Hare Intl

Mon 1/12

8:00 am-10:46 am

Nonstop4h 46m

$178

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Tue 1/6

12:45 pm-5:00 am

2 stops14h 15m

Chicago Midway

Tue 1/13

6:10 am-12:20 pm

1 stop8h 10m

$179

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 1/9

12:26 pm-10:56 pm

1 stop8h 30m

Chicago O'Hare Intl

Wed 1/14

12:00 pm-11:09 am

2 stops25h 09m

$179

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Wed 1/7

8:45 am-8:40 pm

2 stops9h 55m

Chicago Midway

Sun 1/11

3:25 pm-11:15 pm

1 stop9h 50m

$180

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 1/16

2:04 pm-8:15 pm

Nonstop4h 11m

Chicago O'Hare Intl

Mon 1/19

7:36 pm-10:20 pm

Nonstop4h 44m

$181

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 1/4

12:14 am-6:07 am

Nonstop3h 53m

Chicago O'Hare Intl

Sat 1/10

7:36 pm-10:20 pm

Nonstop4h 44m

$182

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 12/29

6:00 am-12:13 pm

Nonstop4h 13m

Chicago O'Hare Intl

Fri 1/9

6:06 pm-8:56 pm

Nonstop4h 50m

$184

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 2/1

5:50 pm-11:50 pm

Nonstop4h 00m

Chicago O'Hare Intl

Tue 2/10

9:00 am-5:29 pm

1 stop10h 29m

$185

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 typical price of a round-trip flight between Seattle and Chicago?

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 $221. 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 $263.

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 $392. 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 $489.

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 $295. In contrast, the most expensive time of day to depart to Chicago is in the morning when prices are around $450.

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 $307 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 December 2025, prices for Seattle to Chicago flights are approximately 28% 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

$177

Fastest flight time

3h 55m

Direct flights

Every day

Airports in Chicago

2 airports
The best one-way flight to Chicago from Seattle in the past 72 hours is $177. The best round-trip flight deal from Seattle to Chicago found on momondo in the last 72 hours is $318.
The fastest flight from Seattle to Chicago takes 3h 55m
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 53m.

  • 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?

  • 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?

  • 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
Spirit AirlinesPriceFrom $107Free CancellationRating
6.3
8,157 reviews
Search Spirit Airlines flights
Hawaiian AirlinesPriceFrom $121Free CancellationRating
7.8
2,815 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $123Free CancellationRating
7.9
8,007 reviews
Search Delta flights
FrontierPriceFrom $150Free CancellationRating
5.8
3,093 reviews
Search Frontier flights
United AirlinesPriceFrom $165Free CancellationRating
7.4
9,064 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $175Free CancellationRating
8.0
11,391 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $179Free CancellationRating
8.0
4,253 reviews
Search Southwest flights
American AirlinesPriceFrom $183Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights

  • Alaska Airlines Flights From Seattle to Chicago

    Alaska Airlines flies from Seattle to Chicago around 10 times per week, with 11,391 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from Seattle to Chicago in the last 72 hours was $175 (round-trip), much lower than the average airfare cost of $330 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 $361, however, with flight time and availability significantly affecting the price. Southwest (8.0/10 from 4,253 user reviews) flies into Chicago from Seattle 5 times in an average week so prices can vary.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
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.
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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 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport