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Cheap flights from Chicago O'Hare Intl Airport to Seattle from C$ 218

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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
25 Aug — 1 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Chicago O'Hare Intl to Seattle/Tacoma Intl are usually found in January or February, booked 41 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap flight deals from O'Hare Intl to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from O'Hare Intl to Seattle
Explore the most affordable flight options available from O'Hare Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 July 2026.

Mon 5/102:21 p.m.
ORD
-
SEA
1 stop9h 12m
Alaska Airlines
Mon 5/1011:41 p.m.
SEA
-
ORD
Nonstop3h 59m
Alaska Airlines
Deal found 26/7C$ 410
Thu 1/106:30 a.m.
ORD
-
SEA
1 stop10h 38m
Frontier
Fri 9/107:00 p.m.
SEA
-
ORD
1 stop8h 42m
Frontier
Deal found 26/7C$ 413
Sun 23/89:20 p.m.
ORD
-
SEA
1 stop22h 31m
Frontier
Sun 30/89:29 p.m.
SEA
-
ORD
1 stop19h 33m
Frontier
Deal found 25/7C$ 414
Thu 8/108:12 p.m.
ORD
-
SEA
Nonstop4h 44m
United Airlines
Sat 10/107:25 p.m.
SEA
-
ORD
1 stop7h 39m
United Airlines
Deal found 21/7C$ 417
Mon 2/117:56 p.m.
ORD
-
SEA
1 stop20h 51m
Alaska Airlines
Tue 3/115:46 p.m.
SEA
-
ORD
Nonstop4h 11m
Alaska Airlines
Deal found 24/7C$ 418
Thu 20/86:00 a.m.
ORD
-
SEA
Nonstop4h 30m
Alaska Airlines
Mon 24/88:49 p.m.
SEA
-
ORD
1 stop14h 33m
Alaska Airlines
Deal found 21/7C$ 421
Wed 2/94:20 p.m.
ORD
-
SEA
Nonstop4h 47m
United Airlines
Sun 6/97:00 a.m.
SEA
-
ORD
Nonstop4h 15m
United Airlines
Deal found 21/7C$ 423
Sun 20/98:00 a.m.
ORD
-
SEA
Nonstop4h 34m
Alaska Airlines
Mon 28/95:51 p.m.
SEA
-
ORD
Nonstop4h 08m
Alaska Airlines
Deal found 21/7C$ 427
Sat 19/94:08 p.m.
ORD
-
SEA
Nonstop4h 39m
Alaska Airlines
Sun 27/910:13 a.m.
SEA
-
ORD
1 stop11h 46m
Alaska Airlines
Deal found 21/7C$ 430
Tue 11/82:20 p.m.
ORD
-
SEA
1 stop8h 15m
Alaska Airlines
Tue 11/812:17 a.m.
SEA
-
ORD
Nonstop4h 03m
Alaska Airlines
Deal found 21/7C$ 433
Tue 22/97:20 a.m.
ORD
-
SEA
1 stop9h 19m
Alaska Airlines
Wed 30/98:40 p.m.
SEA
-
ORD
1 stop14h 42m
Alaska Airlines
Deal found 22/7C$ 435
Tue 6/102:21 p.m.
ORD
-
SEA
1 stop9h 12m
Alaska Airlines
Tue 6/1011:41 p.m.
SEA
-
ORD
Nonstop3h 59m
Alaska Airlines
Deal found 26/7C$ 440

Find flight deals from O'Hare Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Seattle (SEA). 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 26 July 2026.

Round-trip from

C$ 410

One-way from

C$ 218

Popular in

July

Cheapest in

January

Average price

C$ 571

Good one-way deal

C$ 294 or less
Alaska Airlines
  • Alaska Airlines
  • 22/10-22/10
  • 1 total stop
  • 14h 11m total
  • Chicago to Seattle
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 5/9
  • 1 total stop
  • 11h 34m total
  • Chicago to Seattle
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 144 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a one-way flight from Chicago O'Hare Intl to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl to Seattle 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 26 July 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 5/10

2:21 p.m.-9:33 p.m.

1 stop9h 12m

Seattle/Tacoma Intl

Mon 5/10

11:41 p.m.-5:40 a.m.

Nonstop3h 59m

C$ 410
Quickest round-trip

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 2/9

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

Nonstop4h 37m

Seattle/Tacoma Intl

Fri 4/9

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

Nonstop3h 54m

C$ 423

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 11/9

2:18 p.m.-9:40 p.m.

1 stop9h 22m

Seattle/Tacoma Intl

Tue 22/9

6:00 a.m.-12:07 p.m.

Nonstop4h 07m

C$ 423

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sun 30/8

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

1 stop15h 03m

Seattle/Tacoma Intl

Tue 1/9

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

Nonstop4h 04m

C$ 423

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 22/9

7:20 a.m.-2:39 p.m.

1 stop9h 19m

Seattle/Tacoma Intl

Fri 2/10

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

1 stop7h 41m

C$ 455

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 19/8

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

Nonstop4h 30m

Seattle/Tacoma Intl

Sun 23/8

6:00 a.m.-12:07 p.m.

Nonstop4h 07m

C$ 466

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 6/10

7:00 a.m.-9:42 a.m.

Nonstop4h 42m

Seattle/Tacoma Intl

Tue 6/10

11:56 a.m.-6:20 p.m.

Nonstop4h 24m

C$ 496

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 31/8

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

Nonstop4h 44m

Seattle/Tacoma Intl

Wed 9/9

5:13 p.m.-11:17 p.m.

Nonstop4h 04m

C$ 503

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 30/9

8:00 a.m.-10:34 a.m.

Nonstop4h 34m

Seattle/Tacoma Intl

Mon 5/10

5:49 p.m.-11:59 p.m.

Nonstop4h 10m

C$ 503

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 3/12

8:42 p.m.-11:26 p.m.

Nonstop4h 44m

Seattle/Tacoma Intl

Sat 5/12

1:45 p.m.-7:55 p.m.

Nonstop4h 10m

C$ 503

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/7

Showing 1-10 of 24 resultsSorted by cheapest first
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Best time to book a flight from O'Hare Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from O'Hare Intl 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 Chicago O'Hare Intl Airport to Seattle

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

The price you pay for your flight from Chicago O'Hare Intl Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 40 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Seattle (average of C$ 307). Flying from Chicago O'Hare Intl Airport to Seattle in July is currently the most expensive (average of C$ 574). 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 ORD to SEA?

Find hourly flight availability from O'Hare Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 July 2026.

It’s typically best to fly out from Chicago O'Hare Intl Airport to Seattle at noon. Doing so could potentially save you 51% on the flight price compared to flying in the morning, which is usually more expensive.

How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to Seattle?

Airfare is below average for this route at the moment.

Chicago O'Hare Intl Airport to Seattle flights typically cost between C$ 448 and C$ 636 in October.
The cheapest round-trip price found within the last 5 days was C$ 410 on Alaska Airlines (22 Oct-22 Oct).

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Seattle. 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 into for flights to Seattle from Chicago O'Hare Intl?

    Located just 18.4 km from the city centre, Seattle/Tacoma Intl is the airport most travellers will use when flying to Seattle from Chicago O'Hare Intl. Booking flights from Chicago O'Hare Intl to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 46 daily inbound flights from Chicago O'Hare Intl from 0 different airlines.

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

    There are many flights that can get you from Chicago O'Hare Intl Airport to Seattle in 4h 37m. Fly via Alaska Airlines or Delta to get the fastest option. The distance from Chicago O'Hare Intl Airport to Seattle is about 2760 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to Seattle?

    The top 3 most reliable airlines when flying from Chicago O'Hare Intl Airport to Seattle are Air France (83%), Austrian Airlines (81%) and Brussels Airlines (78%).

  • What are the cheapest flights from Chicago O'Hare Intl Airport to Seattle?

    On average you can expect to pay C$ 294 for a flight from Chicago O'Hare Intl Airport to Seattle. The cheapest flight overall is C$ 168 while the most popular route, (Chicago O'Hare Intl - Seattle/Tacoma Intl) is currently priced at C$ 517.

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

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

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

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

  • Can I find deals for business class flights from O'Hare Intl to Seattle?

    Yes. Cheapflights offers flight deals from O'Hare Intl to Seattle 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 Chicago O'Hare Intl Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Seattle (average of C$ 307). Flying from Chicago O'Hare Intl Airport to Seattle in July is currently the most expensive (average of C$ 574). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Kent
Leavenworth
Mukilteo
Tacoma
Renton
Cashmere
Lynnwood
Ellensburg
Tukwila
Olympia
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Federal Way
Kirkland

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