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Cheap flights from Chicago O'Hare Intl Airport to Seattle 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
27 May — 3 Jun1
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 78 days in advance, depart on a Thursday or Friday and return on a Thursday

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 27 April 2026.

Sat 16/57:12 a.m.
ORD
-
SEA
Nonstop4h 35m
Delta
Wed 20/57:30 a.m.
SEA
-
ORD
Nonstop4h 15m
Delta
Deal found 22/4C$ 328
Wed 19/88:42 p.m.
ORD
-
SEA
Nonstop4h 44m
Alaska Airlines
Tue 25/83:47 p.m.
SEA
-
ORD
1 stop5h 54m
Alaska Airlines
Deal found 22/4C$ 329
Tue 12/57:12 a.m.
ORD
-
SEA
Nonstop4h 35m
Delta
Wed 20/510:35 a.m.
SEA
-
ORD
Nonstop4h 14m
Delta
Deal found 22/4C$ 331
Tue 1/95:00 a.m.
ORD
-
SEA
1 stop7h 03m
United Airlines
Tue 1/93:51 p.m.
SEA
-
ORD
1 stop6h 08m
United Airlines
Deal found 23/4C$ 335
Thu 14/57:49 p.m.
ORD
-
SEA
Nonstop4h 41m
Alaska Airlines
Tue 9/65:42 p.m.
SEA
-
ORD
Nonstop4h 17m
Alaska Airlines
Deal found 23/4C$ 340
Sat 16/57:40 a.m.
ORD
-
SEA
Nonstop4h 41m
Alaska Airlines
Sat 16/512:45 p.m.
SEA
-
ORD
Nonstop4h 18m
Alaska Airlines
Deal found 22/4C$ 342
Tue 9/67:40 a.m.
ORD
-
SEA
Nonstop4h 41m
Alaska Airlines
Tue 9/61:30 p.m.
SEA
-
ORD
1 stop21h 51m
Alaska Airlines
Deal found 22/4C$ 346
Tue 18/87:20 a.m.
ORD
-
SEA
1 stop7h 43m
Alaska Airlines
Wed 26/85:48 p.m.
SEA
-
ORD
Nonstop4h 11m
Alaska Airlines
Deal found 23/4C$ 353
Tue 12/58:48 p.m.
ORD
-
SEA
Nonstop4h 41m
Alaska Airlines
Mon 18/511:59 a.m.
SEA
-
ORD
1 stop9h 56m
Alaska Airlines
Deal found 22/4C$ 354
Thu 14/57:54 p.m.
ORD
-
SEA
Nonstop4h 45m
United Airlines
Sat 16/511:53 p.m.
SEA
-
ORD
Nonstop4h 01m
United Airlines
Deal found 23/4C$ 361
Mon 17/88:05 p.m.
ORD
-
SEA
Nonstop4h 44m
Alaska Airlines
Tue 25/83:47 p.m.
SEA
-
ORD
1 stop5h 54m
Alaska Airlines
Deal found 22/4C$ 362
Thu 20/86:00 a.m.
ORD
-
SEA
Nonstop4h 30m
Alaska Airlines
Wed 26/85:48 p.m.
SEA
-
ORD
Nonstop4h 11m
Alaska Airlines
Deal found 23/4C$ 364

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 27 April 2026.

Round-trip from

C$ 328

One-way from

C$ 168

Popular in

June

Cheapest in

January

Average price

C$ 392

Good one-way deal

C$ 470 or less
Delta
  • Delta
  • 16/5-20/5
  • Nonstop
  • 8h 50m total
  • Chicago to Seattle
Search Deals
United Airlines
  • United Airlines
  • 11/8
  • 1 total stop
  • 7h 34m total
  • Chicago to Seattle
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 27 April 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

Wed 26/8

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

Nonstop4h 44m

Seattle/Tacoma Intl

Sat 29/8

5:48 p.m.-11:59 p.m.

Nonstop4h 11m

C$ 340

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 13/5

6:00 a.m.-8:34 a.m.

Nonstop4h 34m

Seattle/Tacoma Intl

Sun 14/6

9:28 p.m.-5:00 a.m.

1 stop5h 32m

C$ 439

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 7/8

4:20 p.m.-7:06 p.m.

Nonstop4h 46m

Seattle/Tacoma Intl

Thu 13/8

2:26 p.m.-10:41 p.m.

1 stop6h 15m

C$ 443

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 24/7

5:55 p.m.-8:34 p.m.

Nonstop4h 39m

Seattle/Tacoma Intl

Tue 28/7

5:40 p.m.-11:38 p.m.

Nonstop3h 58m

C$ 485

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 15/8

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

Nonstop4h 37m

Seattle/Tacoma Intl

Sun 23/8

5:45 p.m.-11:47 p.m.

Nonstop4h 02m

C$ 485

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sun 28/6

5:55 p.m.-8:35 p.m.

Nonstop4h 40m

Seattle/Tacoma Intl

Sun 5/7

7:20 a.m.-1:30 p.m.

Nonstop4h 10m

C$ 485

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sun 5/7

6:55 a.m.-9:31 a.m.

Nonstop4h 36m

Seattle/Tacoma Intl

Sun 12/7

7:20 a.m.-1:28 p.m.

Nonstop4h 08m

C$ 485

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 19/8

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

Nonstop4h 37m

Seattle/Tacoma Intl

Mon 24/8

5:45 p.m.-11:47 p.m.

Nonstop4h 02m

C$ 485
Quickest round-trip

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 22/7

6:55 a.m.-9:27 a.m.

Nonstop4h 32m

Seattle/Tacoma Intl

Fri 31/7

5:30 p.m.-11:28 p.m.

Nonstop3h 58m

C$ 485

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 14/7

5:55 p.m.-8:34 p.m.

Nonstop4h 39m

Seattle/Tacoma Intl

Fri 7/8

5:30 p.m.-11:28 p.m.

Nonstop3h 58m

C$ 485

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/4

Showing 1-10 of 23 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 77 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$ 312). Flying from Chicago O'Hare Intl Airport to Seattle in June is currently the most expensive (average of C$ 474). 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 27 April 2026.

It’s typically best to fly out from Chicago O'Hare Intl Airport to Seattle at noon. Doing so could potentially save you 36% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

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 33 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 39m. Fly via Alaska Airlines, United Airlines, or Delta to get the fastest option. The distance from Chicago O'Hare Intl Airport to Seattle is about 2760 km. Most flights are nonstop.

  • 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 Tahiti Nui (89%), Scandinavian Airlines (84%) and Brussels Airlines (77%).

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

    On average you can expect to pay C$ 503 for a flight from Chicago O'Hare Intl Airport to Seattle. The cheapest flight overall is C$ 192 while the most popular route, (Chicago O'Hare Intl - Seattle/Tacoma Intl) is currently priced at C$ 417.

  • 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$ 312). Flying from Chicago O'Hare Intl Airport to Seattle in June is currently the most expensive (average of C$ 474). 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?

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SeaTac
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