Cheap flights from Seattle to Chicago O'Hare Intl Airport from C$ 226
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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ORD
22 Nov — 29 Nov1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Chicago O'Hare Intl are usually found in February or January, booked 61 days in advance, depart on a Friday or Wednesday and return on a Thursday
Cheap flight deals from Seattle to O'Hare Intl
Enter your travel dates to find the best prices.
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One-way
Cheapest flights from Seattle to O'Hare Intl
Explore the most affordable flight options available from Seattle to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 October 2026.
Tue 10/1111:42 p.m. -
Nonstop3h 58m
Wed 11/117:00 a.m. -
Nonstop4h 50m
Deal found 21/10C$ 404
Thu 19/115:51 p.m. -
Nonstop4h 08m
Thu 26/119:00 a.m. -
Nonstop4h 57m
Deal found 22/10C$ 407
Thu 19/119:13 p.m. -
1 stop29h 57m
Thu 26/119:00 a.m. -
Nonstop4h 57m
Deal found 22/10C$ 409
Mon 9/115:51 p.m. -
Nonstop4h 08m
Thu 19/117:00 a.m. -
Nonstop4h 50m
Deal found 21/10C$ 411
Wed 9/1210:48 a.m. -
Nonstop4h 05m
Mon 14/121:30 p.m. -
1 stop9h 31m
Deal found 22/10C$ 419
Sat 14/117:13 a.m. -
1 stop9h 46m
Tue 24/116:00 a.m. -
Nonstop4h 41m
Deal found 21/10C$ 425
Sat 7/114:27 p.m. -
1 stop5h 54m
Thu 12/119:30 a.m. -
Nonstop4h 44m
Deal found 21/10C$ 431
Thu 31/121:02 p.m. -
1 stop6h 27m
Sat 9/112:40 p.m. -
1 stop7h 32m
Deal found 19/10C$ 432
Mon 9/119:59 p.m. -
1 stop13h 10m
Mon 16/112:15 p.m. -
1 stop10h 42m
Deal found 21/10C$ 439
Fri 4/121:32 p.m. -
2 stops22h 58m
Sun 6/128:53 p.m. -
2 stops20h 50m
Deal found 20/10C$ 442
Best flights from Seattle to O'Hare Intl
Discover carefully curated flight deals from Seattle to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 23 October 2026.
Thu 14/17:20 a.m. -
Nonstop4h 11m
Sat 16/16:30 a.m. -
Nonstop4h 45m
Deal found 21/10C$ 411
Tue 15/128:09 p.m. -
1 stop15h 06m
Mon 21/128:59 p.m. -
Nonstop4h 54m
Deal found 21/10C$ 425
Wed 13/17:20 a.m. -
Nonstop4h 11m
Sat 16/16:30 a.m. -
Nonstop4h 45m
Deal found 21/10C$ 411
Sat 14/117:13 a.m. -
1 stop9h 46m
Tue 17/117:20 a.m. -
1 stop9h 25m
Deal found 22/10C$ 439
Sat 28/117:27 a.m. -
Nonstop4h 10m
Wed 2/126:40 a.m. -
Nonstop4h 57m
Deal found 20/10C$ 470
Thu 24/1211:53 p.m. -
1 stop11h 17m
Sat 2/16:00 a.m. -
Nonstop5h 00m
Deal found 21/10C$ 484
Thu 17/125:50 p.m. -
Nonstop4h 07m
Sun 20/122:27 p.m. -
Nonstop4h 48m
Deal found 20/10C$ 534
Sat 19/125:48 p.m. -
Nonstop4h 11m
Fri 25/126:00 a.m. -
Nonstop5h 00m
Deal found 20/10C$ 557
Thu 24/1211:39 p.m. -
Nonstop4h 01m
Tue 29/127:58 p.m. -
1 stop15h 35m
Deal found 22/10C$ 576
Sun 8/116:00 a.m. -
1 stop6h 36m
Tue 17/1112:58 p.m. -
Nonstop4h 38m
Deal found 20/10C$ 589
Sat 21/1111:58 p.m. -
Nonstop3h 58m
Sun 22/119:00 a.m. -
Nonstop4h 57m
Deal found 18/10C$ 586
Direct flights from Seattle to O'Hare Intl
Explore direct flight options from Seattle to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 23 October 2026.
Tue 10/1111:42 p.m. -
Nonstop3h 58m
Wed 11/117:00 a.m. -
Nonstop4h 50m
Deal found 21/10C$ 404
Thu 19/115:51 p.m. -
Nonstop4h 08m
Thu 26/119:00 a.m. -
Nonstop4h 57m
Deal found 22/10C$ 407
Mon 9/115:51 p.m. -
Nonstop4h 08m
Thu 19/117:00 a.m. -
Nonstop4h 50m
Deal found 21/10C$ 411
Thu 12/1111:42 p.m. -
Nonstop3h 58m
Fri 13/119:30 a.m. -
Nonstop4h 44m
Deal found 21/10C$ 464
Wed 25/115:55 p.m. -
Nonstop4h 04m
Sat 28/116:40 a.m. -
Nonstop4h 50m
Deal found 21/10C$ 470
Fri 13/115:55 p.m. -
Nonstop4h 04m
Thu 26/1112:58 p.m. -
Nonstop4h 38m
Deal found 21/10C$ 471
Fri 20/1110:56 p.m. -
Nonstop4h 10m
Mon 23/114:15 p.m. -
Nonstop4h 48m
Deal found 21/10C$ 473
Wed 23/127:15 a.m. -
Nonstop4h 17m
Sat 2/16:00 a.m. -
Nonstop4h 54m
Deal found 22/10C$ 484
Sat 19/125:48 p.m. -
Nonstop4h 11m
Wed 23/126:00 a.m. -
Nonstop5h 00m
Deal found 20/10C$ 495
Mon 23/115:55 p.m. -
Nonstop4h 04m
Sat 28/116:40 a.m. -
Nonstop4h 50m
Deal found 21/10C$ 498
Sun 15/1111:42 p.m. -
Nonstop3h 58m
Tue 24/116:00 a.m. -
Nonstop4h 41m
Deal found 21/10C$ 502
Sun 13/125:51 p.m. -
Nonstop4h 08m
Wed 6/16:57 p.m. -
Nonstop4h 45m
Deal found 19/10C$ 503
Last-minute flights from Seattle to O'Hare Intl
Discover last-minute flight deals from Seattle to O'Hare Intl. Data last updated 23 October 2026 and is based on user searches.
Sat 7/114:27 p.m. -
1 stop5h 54m
Thu 12/119:30 a.m. -
Nonstop4h 44m
Deal found 21/10C$ 431
Sat 7/114:27 p.m. -
1 stop5h 54m
Thu 12/116:30 a.m. -
2 stops29h 15m
Deal found 21/10C$ 461
Mon 9/115:51 p.m. -
Nonstop4h 08m
Thu 19/117:00 a.m. -
Nonstop4h 50m
Deal found 21/10C$ 411
Mon 9/119:59 p.m. -
1 stop13h 10m
Mon 16/112:15 p.m. -
1 stop10h 42m
Deal found 21/10C$ 439
Tue 10/1111:42 p.m. -
Nonstop3h 58m
Wed 11/117:00 a.m. -
Nonstop4h 50m
Deal found 21/10C$ 404
Thu 12/1111:42 p.m. -
Nonstop3h 58m
Fri 13/119:30 a.m. -
Nonstop4h 44m
Deal found 21/10C$ 464
Sat 14/117:13 a.m. -
1 stop9h 46m
Tue 24/116:00 a.m. -
Nonstop4h 41m
Deal found 21/10C$ 425
Thu 19/115:51 p.m. -
Nonstop4h 08m
Thu 26/119:00 a.m. -
Nonstop4h 57m
Deal found 22/10C$ 407
Thu 19/119:13 p.m. -
1 stop29h 57m
Thu 26/119:00 a.m. -
Nonstop4h 57m
Deal found 22/10C$ 409
Thu 19/1110:56 p.m. -
Nonstop4h 10m
Thu 26/111:30 p.m. -
1 stop9h 26m
Deal found 19/10C$ 450
One-way flights from Seattle to O'Hare Intl
Search for one-way flight options from Seattle to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 23 October 2026.
Fri 15/14:29 p.m. -
1 stop5h 57m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 21/10C$ 226
Thu 24/129:59 p.m. -
1 stop13h 11m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 21/10C$ 227
Fri 4/121:32 p.m. -
2 stops22h 58m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 20/10C$ 233
Mon 9/115:55 p.m. -
Nonstop4h 04m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 19/10C$ 237
Thu 3/129:07 p.m. -
1 stop29h 52m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 19/10C$ 238
Wed 25/1110:39 a.m. -
Nonstop4h 08m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 20/10C$ 265
Fri 13/117:27 a.m. -
Nonstop4h 10m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 22/10C$ 266
Mon 21/1211:44 p.m. -
Nonstop4h 14m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 20/10C$ 268
Wed 10/32:42 p.m. -
1 stop7h 35m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 18/10C$ 272
Wed 25/1112:20 p.m. -
1 stop7h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 19/10C$ 279
Tue 10/119:08 a.m. -
1 stop7h 51m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 22/10C$ 280
Find flight deals from Seattle to O'Hare Intl
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to O'Hare Intl (ORD). 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 23 October 2026.
Customize your flight search to find flights from Seattle to O'Hare Intl 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 23 October 2026.
Use the filters below to find and compare flights from Seattle to Chicago O'Hare Intl Airport 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
Sat 28/11
7:27 a.m.-1:37 p.m.
Nonstop4h 10m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 265
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Fri 4/12
5:51 p.m.-11:59 p.m.
Nonstop4h 08m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 268
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Fri 20/11
1:09 p.m.-11:49 p.m.
1 stop8h 40m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 280
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Sat 19/12
5:48 p.m.-11:59 p.m.
Nonstop4h 11m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 290
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Sun 13/12
7:00 a.m.-1:10 p.m.
Nonstop4h 10m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 299
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Sun 3/1
7:00 a.m.-1:12 p.m.
Nonstop4h 12m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 330
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Mon 30/11
10:56 p.m.-5:06 a.m.
Nonstop4h 10m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 330
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Thu 3/12
11:40 p.m.-5:37 a.m.
Nonstop3h 57m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 330
Quickest round-trip
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Thu 25/2
2:20 p.m.-8:16 p.m.
Nonstop3h 56m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 330
SeattleChicago
SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl
SEAORD
Seattle/Tacoma Intl
Fri 19/3
2:42 p.m.-12:17 a.m.
1 stop7h 35m
Chicago O'Hare Intl
Wed 31/12
12:00 a.m.-10:00 p.m.
Nonstop0h 00m
C$ 337
Flights are sorted by cheapest round-trip flights first.
Deals found on 20/10
Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Seattle to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Seattle with our price prediction graph.
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 O'Hare Intl Airport
Prices
Airlines
How far ahead should I book a flight from Seattle to Chicago O'Hare Intl Airport?
Booking 60 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Chicago O'Hare Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Seattle to Chicago O'Hare Intl Airport?
Currently, February is the cheapest month in which you can book a flight from Seattle to Chicago O'Hare Intl Airport (average of C$ 346). Flying from Seattle to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 585). 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 ORD?
Find hourly flight availability from Seattle to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 23 October 2026.
One of the essential ways to save on airfare from Seattle to Chicago O'Hare Intl Airport is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 60% on airfare.
What is the cheapest day to fly from Seattle to Chicago O'Hare Intl Airport?
Use this chart to determine the cheapest time to fly round-trip from Seattle to O'Hare Intl. Price data was last updated on 17 October 2026.
Travelers seeking maximum savings on their Seattle to Chicago O'Hare Intl Airport 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.
How much does it cost to fly round-trip from Seattle to Chicago O'Hare Intl Airport?
Airfare is below average for this route at the moment.
Seattle to Chicago O'Hare Intl Airport flights typically cost between C$ 423 and C$ 669 in November.The cheapest round-trip price found within the last 5 days was C$ 404 on Alaska Airlines (10 Nov-11 Nov).
Weekly flight availability from Seattle to Chicago O'Hare Intl Airport
Explore weekly flight availability from Seattle to O'Hare Intl. 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 23 October 2026.
The most flights from SEA to ORD are scheduled on a Thursday (53 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (24 on average).
Reviews of airlines servicing O'Hare Intl
Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated 23 October 2026.
Check out reviews from past customers who have flown with Alaska Airlines from Seattle to Chicago O'Hare Intl Airport to help guide your decision. You can also see how each airline stacks up 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 O'Hare Intl. 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 O'Hare Intl?
Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly out of when you book flights from Seattle to Chicago O'Hare Intl. 1 airline have flights from Seattle/Tacoma Intl to Chicago O'Hare Intl on a regular basis. Booking flights from Seattle/Tacoma Intl to Chicago O'Hare Intl should not be difficult; the airport handles an average of 33 outbound flights to Chicago O'Hare Intl per day.
How long is the flight from Seattle to Chicago O'Hare Intl Airport?
Delta and Alaska Airlines can get you from Seattle to Chicago O'Hare Intl Airport in just under 4h 11m. Your travel time can differ by up to 10h 55m. Seattle and Chicago O'Hare Intl Airport are separated by a distance of 2760 km. This flight may include one or multiple stops.
What is the cheapest airline to fly from Seattle to Chicago O'Hare Intl Airport round-trip?
Alaska Airlines, at C$ 217, was found to be the cheapest airline from Seattle to Chicago O'Hare Intl Airport.. Alaska Airlines is 56% 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 O'Hare Intl Airport?
The top 3 most reliable airlines when flying from Seattle to Chicago O'Hare Intl Airport are Aer Lingus (85%), Royal Jordanian (84%) and Avianca (83%).
What are the cheapest flights from Seattle to Chicago O'Hare Intl Airport?
Looking at all options, your cheapest flight can be booked for C$ 274. While the most popular route (Seattle/Tacoma Intl - Chicago O'Hare Intl) can be booked for C$ 409 on average, our data indicates C$ 513 when flying from Seattle to Chicago O'Hare Intl Airport.
Can I find deals for business class flights from Seattle to O'Hare Intl?
Yes. Cheapflights offers flight deals from Seattle to O'Hare Intl 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 O'Hare Intl Airport?
Currently, February is the cheapest month in which you can book a flight from Seattle to Chicago O'Hare Intl Airport (average of C$ 346). Flying from Seattle to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 585). 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 O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 23 October 2026.
Discover the top airline that operate flights from Seattle to O'Hare Intl. 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 7,457,451 searches. Data last updated 23 October 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 O'Hare Intl?
Cheapflights makes it easy to find Seattle to O'Hare Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Seattle to O'Hare Intl?
Cheapflights simply makes it quick and affordable to book flights from Seattle to O'Hare Intl 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 O'Hare Intl with no change fees?
Certainly. Search results for flights to O'Hare Intl from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from Seattle to O'Hare Intl become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to O'Hare Intl from Seattle today and book when prices fit your budget.
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