Find flights
Deals
When to book
FAQs

Cheap flights from Seattle to Chicago O'Hare Intl Airport from C$ 213

SEA — ORD
6 Oct — 13 Oct1
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 83 days in advance, depart on a Thursday or Sunday 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

Fri 25/95:50 p.m. -
Nonstop4h 07m
Sat 10/105:48 p.m. -
Nonstop4h 46m
Deal found 4/9C$ 392
Mon 5/107:45 p.m. -
1 stop7h 53m
Sat 10/102:21 p.m. -
1 stop9h 12m
Deal found 3/9C$ 394
Wed 30/97:40 a.m. -
1 stop9h 41m
Mon 5/107:16 p.m. -
Nonstop4h 43m
Deal found 5/9C$ 397
Thu 5/119:35 p.m. -
1 stop24h 15m
Sun 8/116:35 a.m. -
Nonstop4h 45m
Deal found 4/9C$ 401
Fri 2/105:51 p.m. -
Nonstop4h 08m
Fri 9/102:21 p.m. -
1 stop11h 16m
Deal found 4/9C$ 404
Tue 22/95:51 p.m. -
Nonstop4h 08m
Sat 26/98:00 a.m. -
Nonstop4h 34m
Deal found 1/9C$ 411
Fri 6/114:27 p.m. -
1 stop5h 54m
Mon 9/117:00 a.m. -
Nonstop4h 50m
Deal found 3/9C$ 414
Wed 4/111:40 p.m. -
1 stop8h 17m
Sun 8/117:29 a.m. -
1 stop18h 27m
Deal found 4/9C$ 415
Fri 9/105:07 p.m. -
Nonstop4h 03m
Mon 12/108:09 p.m. -
Nonstop4h 44m
Deal found 5/9C$ 416
Thu 15/109:08 p.m. -
1 stop14h 17m
Mon 19/106:00 a.m. -
Nonstop4h 37m
Deal found 5/9C$ 418
Thu 22/1011:41 p.m. -
Nonstop3h 59m
Sat 24/107:20 a.m. -
2 stops10h 44m
Deal found 4/9C$ 421

Find flight deals from Seattle to O'Hare Intl

Round-trip from

C$ 392

One-way from

C$ 213

Popular in

July

Cheapest in

February

Average price

C$ 523

Good round-trip deal

C$ 505 or less

Good one-way deal

C$ 360 or less
Delta
  • Delta
  • 25/9-10/10
  • Nonstop
  • 8h 53m total
  • Seattle to Chicago
Search Deals
Delta
  • Delta
  • 14/11-31/12
  • Nonstop
  • 4h 04m total
  • Seattle to Chicago
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 119 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 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

 
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

Mon 28/9

7:15 a.m.-1:29 p.m.

Nonstop4h 14m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 220

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Mon 21/12

11:44 p.m.-5:59 a.m.

Nonstop4h 15m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 220

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Tue 27/10

5:30 p.m.-11:34 p.m.

Nonstop4h 04m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 220

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Fri 26/2

5:54 p.m.-11:59 p.m.

Nonstop4h 05m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 242
Quickest round-trip

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Thu 19/11

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$ 248

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Tue 3/11

9:08 a.m.-6:59 p.m.

1 stop7h 51m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 256

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Thu 3/12

11:31 a.m.-11:59 p.m.

2 stops10h 28m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 278

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$ 282

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Mon 5/10

9:35 p.m.-4:32 p.m.

2 stops16h 57m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 309

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Wed 7/10

2:30 p.m.-7:41 a.m.

2 stops15h 11m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-10:00 p.m.

Nonstop0h 00m

C$ 309

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

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

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 82 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$ 342). Flying from Seattle to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 577). 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?

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 65% on airfare.

What is the cheapest day to fly from Seattle to Chicago O'Hare Intl Airport?

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$ 444 and C$ 631 in September.
The cheapest round-trip price found within the last 5 days was C$ 392 on Delta (25 Sep-10 Oct).

Related info for your journey

  • 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. 0 airlines 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 37 outbound flights to Chicago O'Hare Intl per day.

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

    Alaska Airlines, United Airlines, and Delta can get you from Seattle to Chicago O'Hare Intl Airport in just under 4h 07m. Your travel time can differ by up to 5h 34m. Seattle and Chicago O'Hare Intl Airport are separated by a distance of 2760 km. This flight may include one or multiple stops.

  • 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 Royal Jordanian (90%), Aer Lingus (87%) and Avianca (85%).

  • 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$ 280. While the most popular route (Seattle/Tacoma Intl - Chicago O'Hare Intl) can be booked for C$ 468 on average, our data indicates C$ 767 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$ 342). Flying from Seattle to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 577). 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
Northbrook
Evanston
Des Plaines
Racine
Rockford
Naperville
Schaumburg
Elk Grove Village
Skokie

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.