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Cheap flights from Seattle to Chicago O'Hare Intl Airport from C$ 168

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ORD
25 May — 1 Jun1
1 adult
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 86 days in advance, depart on a Thursday or Saturday and return on a Thursday

Cheap flight deals from Seattle to O'Hare Intl

Enter your travel dates to find the best prices.

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 25 April 2026.

Tue 19/57:36 p.m.
SEA
-
ORD
1 stop8h 04m
United Airlines
Tue 26/57:00 a.m.
ORD
-
SEA
Nonstop4h 40m
United Airlines
Deal found 22/4C$ 322
Wed 20/53:17 p.m.
SEA
-
ORD
Nonstop4h 23m
American Airlines
Wed 27/59:35 p.m.
ORD
-
SEA
Nonstop4h 41m
American Airlines
Deal found 20/4C$ 326
Tue 22/95:48 p.m.
SEA
-
ORD
Nonstop4h 11m
Alaska Airlines
Wed 30/97:00 a.m.
ORD
-
SEA
1 stop7h 50m
Alaska Airlines
Deal found 23/4C$ 330
Tue 22/95:48 p.m.
SEA
-
ORD
Nonstop4h 11m
Alaska Airlines
Wed 23/97:00 p.m.
ORD
-
SEA
Nonstop4h 38m
Alaska Airlines
Deal found 23/4C$ 331
Wed 13/55:45 p.m.
SEA
-
ORD
Nonstop4h 12m
Delta
Tue 19/57:12 a.m.
ORD
-
SEA
Nonstop4h 35m
Delta
Deal found 21/4C$ 335
Wed 20/511:53 p.m.
SEA
-
ORD
Nonstop4h 05m
United Airlines
Mon 25/57:00 a.m.
ORD
-
SEA
Nonstop4h 40m
United Airlines
Deal found 21/4C$ 341
Fri 12/68:12 p.m.
SEA
-
ORD
1 stop7h 20m
Frontier
Wed 24/69:48 p.m.
ORD
-
SEA
1 stop14h 00m
Frontier
Deal found 23/4C$ 342
Tue 1/93:47 p.m.
SEA
-
ORD
1 stop5h 54m
Alaska Airlines
Tue 8/96:00 a.m.
ORD
-
SEA
Nonstop4h 30m
Alaska Airlines
Deal found 22/4C$ 353
Wed 27/512:50 p.m.
SEA
-
ORD
1 stop7h 59m
United Airlines
Sat 30/57:00 a.m.
ORD
-
SEA
Nonstop4h 40m
United Airlines
Deal found 22/4C$ 354
Wed 2/97:00 a.m.
SEA
-
ORD
Nonstop4h 15m
United Airlines
Mon 7/97:59 p.m.
ORD
-
SEA
Nonstop4h 43m
United Airlines
Deal found 23/4C$ 357
Thu 11/67:41 p.m.
SEA
-
ORD
1 stop23h 02m
Frontier
Sun 14/67:12 a.m.
ORD
-
SEA
1 stop29h 23m
Frontier
Deal found 22/4C$ 359

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 25 April 2026.

Round-trip from

C$ 322

One-way from

C$ 168

Popular in

December

Cheapest in

February

Average price

C$ 417

Good round-trip deal

C$ 486 or less

Good one-way deal

C$ 255 or less
United Airlines
  • United Airlines
  • 16/9-23/9
  • 1 total stop
  • 11h 20m total
  • Seattle to Chicago
Search Deals
United Airlines
  • United Airlines
  • 18/8
  • 1 total stop
  • 6h 43m total
  • Seattle to Chicago
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Chicago O'Hare Intl.
Search Deals

Cheapflights Fare Finder

 
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 629,999 searches. Data last updated 25 April 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 - ORD

SEAORD

Seattle/Tacoma Intl

Sun 31/5

12:09 a.m.-6:20 a.m.

Nonstop4h 11m

Chicago O'Hare Intl

Tue 2/6

7:49 p.m.-10:30 p.m.

Nonstop4h 41m

C$ 341

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 11/5

1:28 p.m.-7:52 p.m.

Nonstop4h 24m

Chicago O'Hare Intl

Tue 12/5

3:52 p.m.-10:53 p.m.

1 stop9h 01m

C$ 387

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 15/8

3:55 p.m.-5:00 a.m.

1 stop11h 05m

Chicago O'Hare Intl

Thu 20/8

6:00 a.m.-8:30 a.m.

Nonstop4h 30m

C$ 417
Quickest round-trip

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 7/6

12:09 a.m.-6:20 a.m.

Nonstop4h 11m

Chicago O'Hare Intl

Sat 13/6

6:00 a.m.-8:38 a.m.

Nonstop4h 38m

C$ 430

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 20/5

5:42 p.m.-11:59 p.m.

Nonstop4h 17m

Chicago O'Hare Intl

Wed 27/5

2:10 p.m.-9:30 p.m.

1 stop9h 20m

C$ 431

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 7/6

5:42 p.m.-11:59 p.m.

Nonstop4h 17m

Chicago O'Hare Intl

Sat 13/6

6:00 a.m.-8:38 a.m.

Nonstop4h 38m

C$ 486
Cheapest one-way

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 3/6

5:45 p.m.-11:55 p.m.

Nonstop4h 10m

C$ 168

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 23/5

5:00 p.m.-11:09 p.m.

Nonstop4h 09m

C$ 188

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 11/5

5:45 p.m.-11:57 p.m.

Nonstop4h 12m

C$ 188

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 4/6

12:09 a.m.-6:20 a.m.

Nonstop4h 11m

C$ 220

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/4

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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.
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

How far ahead should I book a flight from Seattle to Chicago O'Hare Intl Airport?

Booking 85 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$ 338). Flying from Seattle to Chicago O'Hare Intl Airport in December is currently the most expensive (average of C$ 468). 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 25 April 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 in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 66% 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 18 April 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?

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 25 April 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.
Alaska Airlines
7.9
Good
12,286 reviews
Check prices

Crew

8.5

Food

7.0

Entertainment

7.0

Overall

7.9

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
7.9
Good
12,286 reviews
Alaska Airlines
7.9
Good
12,286 reviews
Check prices

Crew

8.5

Food

7.0

Entertainment

7.0

Overall

7.9

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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 40 outbound flights to Chicago O'Hare Intl per day.

  • How long is the flight from Seattle to Chicago O'Hare Intl Airport?

    Alaska Airlines can get you from Seattle to Chicago O'Hare Intl Airport in just under 4h 11m. Your travel time will be generally consistent. Seattle and Chicago O'Hare Intl Airport are separated by a distance of 2760 km. All flights are typically direct.

  • What is the cheapest airline to fly from Seattle to Chicago O'Hare Intl Airport round-trip?

    Alaska Airlines, at C$ 212, was found to be the cheapest airline from Seattle to Chicago O'Hare Intl Airport.. Alaska Airlines is 49% 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 Air Tahiti Nui (98%), SWISS (91%) and Brussels Airlines (90%).

  • 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$ 162. While the most popular route (Seattle/Tacoma Intl - Chicago O'Hare Intl) can be booked for C$ 363 on average, our data indicates C$ 500 when flying from Seattle to Chicago O'Hare Intl Airport.

  • Can I find deals for flights from Seattle to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Seattle to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to O'Hare Intl?

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

  • 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$ 338). Flying from Seattle to Chicago O'Hare Intl Airport in December is currently the most expensive (average of C$ 468). 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

Travelling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Evanston
Des Plaines
Skokie
Downers Grove
Elk Grove Village
Racine
Naperville
Bolingbrook
Romeoville
Schaumburg

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Top airline flying from Seattle to O'Hare Intl

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 629,999 searches. Data last updated 25 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 212AverageC$ 359FlexibilityNo 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 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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