This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CHI
9 Oct — 16 Oct1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Chicago are usually found in February or January, booked 80 days in advance, depart on a Thursday or Wednesday and return on a Thursday
Cheap flight deals from Seattle to Chicago
Enter your travel dates to find the best prices.
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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 9 September 2026.
Fri 6/114:27 p.m. -
1 stop5h 54m
Mon 9/117:00 a.m. -
Nonstop4h 50m
Deal found 8/9C$ 386
Tue 29/97:40 a.m. -
1 stop9h 41m
Sat 3/107:00 a.m. -
Nonstop4h 42m
Deal found 6/9C$ 394
Wed 30/97:40 a.m. -
1 stop9h 41m
Mon 5/107:16 p.m. -
Nonstop4h 43m
Deal found 6/9C$ 396
Thu 5/119:35 p.m. -
1 stop24h 15m
Sun 8/116:35 a.m. -
Nonstop4h 45m
Deal found 4/9C$ 400
Fri 4/1210:52 a.m. -
Nonstop4h 09m
Fri 4/127:55 p.m. -
1 stop16h 10m
Deal found 7/9C$ 401
Thu 15/108:07 p.m. -
1 stop20h 46m
Sun 18/106:00 a.m. -
Nonstop4h 37m
Deal found 7/9C$ 403
Fri 6/114:27 p.m. -
1 stop5h 54m
Mon 9/116:30 a.m. -
1 stop10h 42m
Deal found 5/9C$ 404
Sun 22/1111:47 p.m. -
1 stop10h 01m
Fri 27/115:55 p.m. -
Nonstop4h 43m
Deal found 7/9C$ 407
Thu 15/105:07 p.m. -
Nonstop4h 03m
Thu 29/105:48 p.m. -
1 stop7h 27m
Deal found 7/9C$ 409
Wed 4/111:40 p.m. -
1 stop8h 17m
Sun 8/117:29 a.m. -
1 stop18h 27m
Deal found 4/9C$ 414
Fri 9/105:07 p.m. -
Nonstop4h 03m
Mon 12/108:09 p.m. -
Nonstop4h 44m
Deal found 7/9C$ 415
Thu 1/105:07 p.m. -
Nonstop4h 03m
Mon 12/108:09 p.m. -
Nonstop4h 44m
Deal found 6/9C$ 416
Best flights from Seattle to Chicago
Discover carefully curated flight deals from Seattle to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 9 September 2026.
Fri 15/19:23 p.m. -
1 stop13h 50m
Mon 18/18:00 a.m. -
Nonstop4h 47m
Deal found 6/9C$ 408
Fri 6/119:35 p.m. -
2 stops15h 01m
Tue 10/117:17 p.m. -
1 stop6h 42m
Deal found 4/9C$ 421
Tue 12/13:51 p.m. -
1 stop6h 12m
Fri 15/17:50 p.m. -
Nonstop4h 49m
Deal found 8/9C$ 466
Thu 15/1010:39 a.m. -
Nonstop4h 14m
Sat 17/1012:00 p.m. -
Nonstop4h 37m
Deal found 9/9C$ 437
Wed 30/98:41 a.m. -
1 stop8h 40m
Sat 3/103:49 p.m. -
Nonstop4h 39m
Deal found 8/9C$ 451
Sat 24/107:45 a.m. -
Nonstop4h 15m
Mon 26/1012:50 p.m. -
Nonstop4h 35m
Deal found 9/9C$ 437
Fri 16/1011:56 a.m. -
Nonstop4h 24m
Sat 24/107:00 a.m. -
Nonstop4h 42m
Deal found 8/9C$ 452
Sat 17/105:00 a.m. -
1 stop8h 20m
Sat 17/108:12 p.m. -
Nonstop4h 44m
Deal found 7/9C$ 506
Fri 15/11:30 p.m. -
1 stop6h 23m
Mon 18/16:59 p.m. -
1 stop7h 12m
Deal found 5/9C$ 473
Thu 22/102:30 p.m. -
1 stop7h 17m
Tue 27/102:03 p.m. -
1 stop10h 02m
Deal found 5/9C$ 473
Thu 28/110:05 a.m. -
1 stop10h 03m
Mon 1/27:40 a.m. -
2 stops10h 46m
Deal found 6/9C$ 576
Thu 11/21:30 p.m. -
1 stop6h 23m
Sun 14/27:00 a.m. -
1 stop9h 23m
Deal found 6/9C$ 547
Direct flights from Seattle to Chicago
Explore direct flight options from Seattle to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 9 September 2026.
Thu 24/912:16 a.m. -
Nonstop4h 04m
Fri 2/106:00 a.m. -
Nonstop4h 30m
Deal found 5/9C$ 396
Sat 3/105:07 p.m. -
Nonstop4h 03m
Sun 11/107:00 a.m. -
Nonstop4h 38m
Deal found 5/9C$ 403
Fri 9/105:07 p.m. -
Nonstop4h 03m
Mon 12/108:09 p.m. -
Nonstop4h 44m
Deal found 7/9C$ 415
Thu 1/105:07 p.m. -
Nonstop4h 03m
Mon 12/108:09 p.m. -
Nonstop4h 44m
Deal found 6/9C$ 416
Tue 20/108:32 a.m. -
Nonstop4h 21m
Tue 20/105:46 p.m. -
Nonstop4h 42m
Deal found 9/9C$ 430
Sun 27/96:00 a.m. -
Nonstop4h 07m
Sat 3/109:00 a.m. -
Nonstop4h 44m
Deal found 6/9C$ 437
Tue 29/95:51 p.m. -
Nonstop4h 08m
Sat 3/109:00 a.m. -
Nonstop4h 44m
Deal found 8/9C$ 438
Tue 10/1111:42 p.m. -
Nonstop3h 58m
Sat 14/116:35 p.m. -
Nonstop4h 54m
Deal found 8/9C$ 441
Thu 17/127:20 a.m. -
Nonstop4h 10m
Thu 31/126:00 a.m. -
Nonstop4h 54m
Deal found 7/9C$ 445
Fri 16/1010:39 a.m. -
Nonstop4h 14m
Mon 26/106:35 a.m. -
Nonstop4h 45m
Deal found 9/9C$ 452
Fri 9/103:14 p.m. -
Nonstop4h 15m
Tue 13/106:49 a.m. -
Nonstop4h 42m
Deal found 8/9C$ 454
Fri 25/96:00 a.m. -
Nonstop4h 07m
Mon 5/107:16 p.m. -
Nonstop4h 43m
Deal found 6/9C$ 458
Last-minute flights from Seattle to Chicago
Discover last-minute flight deals from Seattle to Chicago. Data last updated 9 September 2026 and is based on user searches.
Tue 29/98:41 a.m. -
1 stop8h 40m
Wed 7/107:00 a.m. -
Nonstop4h 42m
Deal found 6/9C$ 394
Tue 29/910:57 a.m. -
1 stop16h 41m
Sun 4/108:55 p.m. -
1 stop23h 33m
Deal found 8/9C$ 421
Wed 30/98:40 p.m. -
1 stop14h 42m
Sat 3/107:00 a.m. -
Nonstop4h 42m
Deal found 6/9C$ 396
Thu 1/105:07 p.m. -
Nonstop4h 03m
Mon 12/108:09 p.m. -
Nonstop4h 44m
Deal found 6/9C$ 416
Sat 3/105:07 p.m. -
Nonstop4h 03m
Tue 6/1012:55 p.m. -
1 stop9h 42m
Deal found 7/9C$ 418
Fri 9/105:07 p.m. -
Nonstop4h 03m
Mon 12/108:09 p.m. -
Nonstop4h 44m
Deal found 7/9C$ 415
Thu 15/109:08 p.m. -
1 stop19h 45m
Sun 18/106:00 a.m. -
Nonstop4h 37m
Deal found 6/9C$ 403
Thu 15/105:07 p.m. -
Nonstop4h 03m
Thu 29/105:48 p.m. -
1 stop7h 27m
Deal found 7/9C$ 409
Fri 16/1011:56 a.m. -
Nonstop4h 24m
Sat 31/107:20 a.m. -
2 stops10h 44m
Deal found 7/9C$ 419
Mon 19/102:27 p.m. -
1 stop7h 32m
Mon 2/118:20 p.m. -
Nonstop4h 47m
Deal found 5/9C$ 434
Tue 20/108:32 a.m. -
Nonstop4h 21m
Tue 20/105:46 p.m. -
Nonstop4h 42m
Deal found 9/9C$ 430
Fri 23/103:55 p.m. -
1 stop6h 04m
Mon 26/108:30 p.m. -
Nonstop4h 47m
Deal found 4/9C$ 423
One-way flights from Seattle to Chicago
Search for one-way flight options from Seattle to Chicago. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.
Fri 2/104:27 p.m. -
2 stops19h 50m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 7/9C$ 214
Wed 30/95:50 p.m. -
Nonstop4h 07m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 8/9C$ 219
Tue 3/117:35 p.m. -
1 stop7h 29m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 8/9C$ 233
Fri 9/105:07 p.m. -
Nonstop4h 03m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 8/9C$ 234
Sat 6/31:45 p.m. -
Nonstop4h 10m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 8/9C$ 247
Fri 2/102:27 p.m. -
1 stop7h 32m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 8/9C$ 248
Thu 24/99:45 p.m. -
1 stop29h 53m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 7/9C$ 250
Fri 25/1210:32 a.m. -
1 stop6h 13m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 7/9C$ 252
Thu 24/126:28 p.m. -
1 stop22h 17m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 7/9C$ 259
Tue 29/911:13 p.m. -
Nonstop4h 06m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 7/9C$ 261
Mon 21/126:16 p.m. -
1 stop14h 07m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 7/9C$ 273
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 9 September 2026.
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 7,457,451 searches. Data last updated 9 September 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
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Wed 11/11
10:50 a.m.-5:00 p.m.
Nonstop4h 10m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 219
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Thu 10/12
10:52 a.m.-5:01 p.m.
Nonstop4h 09m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 219
Quickest round-trip
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Wed 11/11
11:42 p.m.-5:40 a.m.
Nonstop3h 58m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 219
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Thu 4/3
10:52 a.m.-5:01 p.m.
Nonstop4h 09m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 247
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Fri 5/3
8:03 a.m.-2:12 p.m.
Nonstop4h 09m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 261
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Sun 4/10
11:31 a.m.-11:59 p.m.
1 stop10h 28m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 281
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Sun 18/10
7:15 a.m.-1:30 p.m.
Nonstop4h 15m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 296
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Sat 5/12
12:58 a.m.-7:00 a.m.
Nonstop4h 02m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 296
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Thu 1/10
7:18 a.m.-7:21 p.m.
2 stops10h 03m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 303
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Sat 3/10
6:39 a.m.-6:53 p.m.
2 stops10h 14m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 303
Flights are sorted by cheapest round-trip flights first.
Deals found on 9/9
Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3
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.
SEA-CHI
SEA-ORD
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
SEA-CHI
SEA-ORD
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$ 332). Flying from Seattle to Chicago in June is currently the most expensive (average of C$ 568). 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 9 September 2026.
It’s typically best to fly out from Seattle to Chicago in the afternoon. Doing so could potentially save you 58% 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 9 September 2026.
The most flights from SEA to CHI are scheduled on a Tuesday (59 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 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$ 419 and C$ 574 in November.The cheapest round-trip price found within the last 5 days was C$ 386 on Multiple Airlines (6 Nov-9 Nov).
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 81 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 5 September 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 9 September 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.
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 32 outbound flights to Chicago per day from 0 airlines. 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 13h 50m. Alaska Airlines provides one of the quickest options available for as low as C$ 408. There are 2760 km between Seattle and Chicago. This flight may include one or multiple stops.
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: Royal Jordanian (90%), Aer Lingus (87%), Avianca (85%).
What are the cheapest flights from Seattle to Chicago?
On average you can expect to pay C$ 495 for a flight from Seattle to Chicago. The cheapest flight overall is C$ 260 while the most popular route, (Seattle/Tacoma Intl - Chicago O'Hare Intl) is currently priced at C$ 396.
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$ 332). Flying from Seattle to Chicago in June is currently the most expensive (average of C$ 568). 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.
Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 9 September 2026.
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on 9 September 2026.
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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