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Cheap flights from Seattle to Chicago from C$ 211

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CHI
24 Aug — 31 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Chicago are usually found in February or January, booked 61 days in advance, depart on a Friday or Wednesday and return on a Wednesday

Cheap flight deals from Seattle to Chicago

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Chicago
Explore the most affordable flight options available from Seattle to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 July 2026.

Fri 14/810:50 a.m.
SEA
-
ORD
Nonstop4h 10m
Delta
Wed 16/912:50 p.m.
ORD
-
SEA
Nonstop4h 35m
Delta
Deal found 21/7C$ 423
Fri 4/911:00 p.m.
SEA
-
ORD
Nonstop4h 06m
United Airlines
Mon 7/97:00 a.m.
ORD
-
SEA
Nonstop4h 35m
United Airlines
Deal found 21/7C$ 427
Mon 31/812:16 a.m.
SEA
-
ORD
Nonstop4h 04m
Multiple Airlines
Fri 4/98:11 p.m.
ORD
-
SEA
1 stop16h 28m
Multiple Airlines
Deal found 21/7C$ 428
Tue 1/910:34 a.m.
SEA
-
ORD
1 stop17h 43m
Frontier
Fri 4/98:11 p.m.
ORD
-
SEA
1 stop16h 28m
Frontier
Deal found 21/7C$ 432
Tue 18/88:40 p.m.
SEA
-
ORD
1 stop14h 42m
Alaska Airlines
Tue 25/82:18 p.m.
ORD
-
SEA
1 stop9h 22m
Alaska Airlines
Deal found 20/7C$ 435
Wed 12/86:00 a.m.
SEA
-
ORD
Nonstop4h 03m
Alaska Airlines
Mon 24/82:18 p.m.
ORD
-
SEA
1 stop11h 22m
Alaska Airlines
Deal found 21/7C$ 438
Thu 13/87:15 a.m.
SEA
-
ORD
Nonstop4h 08m
Delta
Fri 14/87:00 a.m.
ORD
-
SEA
Nonstop4h 37m
Delta
Deal found 21/7C$ 441
Wed 23/99:45 p.m.
SEA
-
ORD
1 stop29h 53m
Multiple Airlines
Wed 30/96:00 a.m.
ORD
-
SEA
Nonstop4h 30m
Multiple Airlines
Deal found 24/7C$ 442
Fri 25/95:51 p.m.
SEA
-
ORD
Nonstop4h 08m
Alaska Airlines
Sun 27/96:00 a.m.
ORD
-
SEA
Nonstop4h 30m
Alaska Airlines
Deal found 22/7C$ 446
Thu 3/97:40 a.m.
SEA
-
ORD
1 stop9h 41m
Alaska Airlines
Tue 8/96:00 a.m.
ORD
-
SEA
Nonstop4h 30m
Alaska Airlines
Deal found 22/7C$ 451
Wed 14/108:49 a.m.
SEA
-
ORD
1 stop8h 04m
Alaska Airlines
Sun 18/107:49 p.m.
ORD
-
SEA
1 stop15h 39m
Alaska Airlines
Deal found 21/7C$ 455

Find flight deals from Seattle to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 July 2026.

Round-trip from

C$ 423

One-way from

C$ 211

Popular in

June

Cheapest in

February

Average price

C$ 559

Good round-trip deal

C$ 404 or less

Good one-way deal

C$ 577 or less
Delta
  • Delta
  • 14/8-19/9
  • Nonstop
  • 8h 45m total
  • Seattle to Chicago
Search Deals
Delta
  • Delta
  • 13/8
  • Nonstop
  • 4h 08m total
  • Seattle to Chicago
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 122 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Chicago (CHI).
Search Deals

Cheapflights 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, Cheapflights users made 629,999 searches. Data last updated 25 July 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

Cheapest round-trip
Quickest round-trip

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 14/8

5:35 p.m.-11:29 p.m.

Nonstop3h 54m

Chicago O'Hare Intl

Sun 16/8

7:00 a.m.-9:37 a.m.

Nonstop4h 37m

C$ 446

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 17/9

12:16 a.m.-6:20 a.m.

Nonstop4h 04m

Chicago O'Hare Intl

Sun 20/9

8:17 p.m.-9:20 a.m.

1 stop15h 03m

C$ 461

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 21/8

3:54 p.m.-11:59 p.m.

1 stop6h 05m

Chicago O'Hare Intl

Sun 23/8

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

Nonstop4h 44m

C$ 461

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 1/10

2:18 p.m.-11:59 p.m.

1 stop7h 41m

Chicago O'Hare Intl

Mon 5/10

7:16 p.m.-9:59 p.m.

Nonstop4h 43m

C$ 468

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 13/8

7:15 a.m.-1:23 p.m.

Nonstop4h 08m

Chicago O'Hare Intl

Wed 19/8

5:56 p.m.-8:35 p.m.

Nonstop4h 39m

C$ 517

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 19/9

8:49 p.m.-1:22 p.m.

1 stop14h 33m

Chicago O'Hare Intl

Wed 23/9

7:00 p.m.-9:38 p.m.

Nonstop4h 38m

C$ 517
Cheapest one-way

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 18/9

5:51 p.m.-11:59 p.m.

Nonstop4h 08m

C$ 224

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 4/10

5:50 p.m.-11:57 p.m.

Nonstop4h 07m

C$ 224

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 2/10

1:56 p.m.-8:17 p.m.

Nonstop4h 21m

C$ 224

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 12/8

12:17 a.m.-6:20 a.m.

Nonstop4h 03m

C$ 252

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/7

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight from Seattle to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Chicago

What is the cheapest month to book a flight from Seattle to Chicago?

Currently, February is the cheapest month in which you can book a flight from Seattle to Chicago (average of C$ 337). Flying from Seattle to Chicago in June is currently the most expensive (average of C$ 579). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to CHI?

Find hourly flight availability from Seattle to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 July 2026.

It’s typically best to fly out from Seattle to Chicago in the afternoon. Doing so could potentially save you 55% on the flight price compared to flying in the morning, which is usually more expensive.

Weekly flight availability from Seattle to Chicago

Explore weekly flight availability from Seattle to Chicago. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 25 July 2026.

The most flights from SEA to CHI are scheduled on a Friday (68 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (48 on average).

How much does it cost to fly round-trip from Seattle to Chicago?

Airfare is below average for this route at the moment.
Seattle to Chicago flights typically cost between C$ 470 and C$ 634 in August.
The cheapest round-trip price found within the last 5 days was C$ 423 on Delta (14 Aug-19 Sep).

How far ahead should I book a flight from Seattle to Chicago?

To ensure you get the cheapest price possible for a flight from Seattle to Chicago, you should look to book at least 60 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest day to fly from Seattle to Chicago?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Chicago. Price data was last updated on 18 July 2026.

Travelers seeking maximum savings on their Seattle to Chicago flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chicago. Reviews last updated 25 July 2026.
See what other customers who have flown with Alaska Airlines and American Airlines from Seattle to Chicago have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,716 reviews
Check prices

Entertainment

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Alaska Airlines
7.9
Good
12,716 reviews
Alaska Airlines
7.9
Good
12,716 reviews
Check prices

Entertainment

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
American Airlines
7.1
Good
11,845 reviews
Alaska Airlines
7.9
Good
12,716 reviews
Check prices

Entertainment

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Chicago?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Chicago. On average, Seattle/Tacoma Intl has 56 outbound flights to Chicago per day from 1 airline. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

  • How long is the flight from Seattle to Chicago?

    A quick flight from Seattle to Chicago can take about 3h 54m. Delta provides one of the quickest options available for as low as C$ 446. There are 2760 km between Seattle and Chicago. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Seattle to Chicago round-trip?

    Flying on Alaska Airlines is currently your cheapest option to Chicago, with prices starting at C$ 218. Alaska Airlines is 53% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Seattle to Chicago?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Chicago on time: Austrian Airlines (87%), Scandinavian Airlines (83%), Royal Jordanian (82%).

  • What are the cheapest flights from Seattle to Chicago?

    On average you can expect to pay C$ 473 for a flight from Seattle to Chicago. The cheapest flight overall is C$ 301 while the most popular route, (Seattle/Tacoma Intl - Chicago O'Hare Intl) is currently priced at C$ 421.

  • Can I find deals for flights from Seattle to Chicago that include hotel bookings?

    Yes. In addition to deals on Seattle to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Chicago.

  • Can I find deals for business class flights from Seattle to Chicago?

    Yes. Cheapflights offers flight deals from Seattle to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Chicago?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Chicago (average of C$ 337). Flying from Seattle to Chicago in June is currently the most expensive (average of C$ 579). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to O'Hare Intl flights

Top airline flying from Seattle to Chicago

Discover the top airline that operate flights from Seattle to Chicago. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 25 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 218AverageC$ 384FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Chicago?

Cheapflights helps you search for flights from Seattle to Chicago via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Chicago?

Cheapflights simply makes it quick and affordable to book flights from Seattle to Chicago by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Seattle to Chicago with no change fees?

Yes, we can. To see specific flights from Seattle to Chicago with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Chicago become cheaper?

Yes! Start tracking prices for Seattle to Chicago flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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