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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 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.
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0 bags

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Cheap round-trip flights

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American Airlines Logo
2:46 pm - 8:59 pmSEA-ORD
4h 13mnonstop
American Airlines Logo
7:35 am - 10:25 amORD-SEA
4h 50mnonstop
$206American Airlines
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Sat, Nov 8 - Mon, Nov 10
Alaska Airlines Logo
12:18 am - 6:21 amSEA-ORD
4h 03mnonstop
Alaska Airlines Logo
3:05 pm - 9:43 pmORD-SEA
8h 38m1 stop
$207Alaska Airlines
Find Deal
Wed, Dec 3 - Sat, Dec 6
Delta Logo
11:55 pm - 9:01 amSEA-MDW
7h 06m1 stop
Delta Logo
5:13 pm - 11:59 pmMDW-SEA
8h 46m1 stop
$207Delta
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Fri, Nov 28 - Fri, Dec 5
Multiple Airlines Logo
6:15 pm - 12:24 amSEA-ORD
4h 09mnonstop
Multiple Airlines Logo
6:00 am - 12:13 pmORD-SEA
8h 13m1 stop
$208Multiple Airlines
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Fri, Nov 7 - Thu, Nov 13
Frontier Logo
2:22 pm - 12:49 amSEA-ORD
8h 27m1 stop
Frontier Logo
6:05 pm - 12:07 pmORD-SEA
20h 02m1 stop
$209Frontier
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Sun, Nov 2 - Tue, Nov 4
Frontier Logo
8:43 pm - 11:39 pmSEA-ORD
24h 56m2 stops
Frontier Logo
6:00 am - 12:13 pmORD-SEA
8h 13m1 stop
$211Frontier
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Wed, Oct 22 - Mon, Nov 17
United Airlines Logo
11:30 pm - 5:29 amSEA-ORD
3h 59mnonstop
United Airlines Logo
7:10 am - 9:53 amORD-SEA
4h 43mnonstop
$213United Airlines
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Wed, Nov 19 - Sat, Nov 22
Southwest Logo
5:45 am - 11:40 amSEA-MDW
3h 55mnonstop
Southwest Logo
10:50 am - 1:25 pmMDW-SEA
4h 35mnonstop
$213Southwest
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Sat, Dec 6 - Tue, Dec 9
Southwest Logo
6:35 am - 12:30 pmSEA-MDW
3h 55mnonstop
Southwest Logo
5:15 am - 11:55 amMDW-SEA
8h 40m1 stop
$214Southwest
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Wed, Nov 12 - Wed, Nov 19
Delta Logo
7:25 am - 1:34 pmSEA-ORD
4h 09mnonstop
Delta Logo
6:00 pm - 8:45 pmORD-SEA
4h 45mnonstop
$227Delta
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Fri, Oct 31 - Fri, Oct 31

Frontier flights from Seattle to Chicago

Our best Frontier deals on Seattle to Chicago flight tickets
Frontier
Oct 28
SEA12:58 pmSeattle/Tacoma Intl
9h 14m
1 stop
ORD12:12 amChicago O'Hare Intl
Nov 2
ORD5:00 amChicago O'Hare Intl
8h 13m
1 stop
SEA11:13 amSeattle/Tacoma Intl
$207
Find similar
Frontier
Oct 27
SEA8:43 pmSeattle/Tacoma Intl
25h 29m
1 stop
ORD12:12 amChicago O'Hare Intl
Oct 30
ORD6:20 pmChicago O'Hare Intl
19h 53m
2 stops
SEA12:13 pmSeattle/Tacoma Intl
$208
Find similar
Frontier
Nov 2
SEA2:22 pmSeattle/Tacoma Intl
8h 27m
1 stop
ORD12:49 amChicago O'Hare Intl
Nov 4
ORD6:05 pmChicago O'Hare Intl
20h 02m
1 stop
SEA12:07 pmSeattle/Tacoma Intl
$209
Find similar

American Airlines flights from Seattle to Chicago

Our best American Airlines deals on Seattle to Chicago flight tickets
American Airlines
Nov 8
SEA2:46 pmSeattle/Tacoma Intl
4h 13m
ORD8:59 pmChicago O'Hare Intl
Nov 10
ORD7:35 amChicago O'Hare Intl
4h 50m
SEA10:25 amSeattle/Tacoma Intl
$206
Find similar
American Airlines
Nov 1
SEA12:59 amSeattle/Tacoma Intl
3h 59m
ORD5:58 amChicago O'Hare Intl
Nov 8
ORD8:30 pmChicago O'Hare Intl
4h 48m
SEA11:18 pmSeattle/Tacoma Intl
$219
Find similar
American Airlines
Nov 7
SEA12:59 amSeattle/Tacoma Intl
4h 00m
ORD6:59 amChicago O'Hare Intl
Nov 9
ORD7:35 amChicago O'Hare Intl
4h 50m
SEA10:25 amSeattle/Tacoma Intl
$242
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 October 14, 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

Sat 11/8

2:46 pm-8:59 pm

Nonstop4h 13m

Chicago O'Hare Intl

Mon 11/10

7:35 am-10:25 am

Nonstop4h 50m

$206

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 12/3

12:18 am-6:21 am

Nonstop4h 03m

Chicago O'Hare Intl

Sat 12/6

3:05 pm-9:43 pm

1 stop8h 38m

$207

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Fri 11/28

11:55 pm-9:01 am

1 stop7h 06m

Chicago Midway

Fri 12/5

5:13 pm-11:59 pm

1 stop8h 46m

$207

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 11/7

6:15 pm-12:24 am

Nonstop4h 09m

Chicago O'Hare Intl

Thu 11/13

6:00 am-12:13 pm

1 stop8h 13m

$208

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 11/2

2:22 pm-12:49 am

1 stop8h 27m

Chicago O'Hare Intl

Tue 11/4

6:05 pm-12:07 pm

1 stop20h 02m

$209

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 10/22

8:43 pm-11:39 pm

2 stops24h 56m

Chicago O'Hare Intl

Mon 11/17

6:00 am-12:13 pm

1 stop8h 13m

$211

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 11/19

11:30 pm-5:29 am

Nonstop3h 59m

Chicago O'Hare Intl

Sat 11/22

7:10 am-9:53 am

Nonstop4h 43m

$213

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Sat 12/6

5:45 am-11:40 am

Nonstop3h 55m

Chicago Midway

Tue 12/9

10:50 am-1:25 pm

Nonstop4h 35m

$213

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Wed 11/12

6:35 am-12:30 pm

Nonstop3h 55m

Chicago Midway

Wed 11/19

5:15 am-11:55 am

1 stop8h 40m

$214

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 10/31

7:25 am-1:34 pm

Nonstop4h 09m

Chicago O'Hare Intl

Fri 10/31

6:00 pm-8:45 pm

Nonstop4h 45m

$227

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, on average, the cheapest month to fly to Chicago from Seattle, with most prices found around $225. 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 $265.

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 $393. 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 $505.

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 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 $311 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 $269 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 2% 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 October 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

$158

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 $158. The best round-trip flight deal from Seattle to Chicago found on momondo in the last 72 hours is $277.
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?

  • 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
8,097 reviews
Search Spirit Airlines flights
DeltaPriceFrom $117Free CancellationRating
7.9
7,977 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $121Free CancellationRating
7.8
2,779 reviews
Search Hawaiian Airlines flights
FrontierPriceFrom $137Free CancellationRating
5.8
3,135 reviews
Search Frontier flights
United AirlinesPriceFrom $169Free CancellationRating
7.4
8,977 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $174Free CancellationRating
8.0
11,082 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $179Free CancellationRating
8.0
4,238 reviews
Search Southwest flights
American AirlinesPriceFrom $180Free CancellationRating
7.2
11,044 reviews
Search American Airlines flights

  • Alaska Airlines Flights From Seattle to Chicago

    Alaska Airlines flies from Seattle to Chicago around 27 times per week, with 11,082 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from Seattle to Chicago in the last 72 hours was $174 (round-trip), much lower than the average airfare cost of $332 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 $381, however, with flight time and availability significantly affecting the price. Southwest (8.0/10 from 4,238 user reviews) flies into Chicago from Seattle 7 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