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Cheap flights from Chicago O'Hare Intl Airport to Seattle from C$ 248

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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
10 Jul — 17 Jul1
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 88 days in advance, depart on a Friday or Wednesday 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 10 June 2026.

Sat 8/86:00 a.m.
ORD
-
SEA
Nonstop4h 38m
Alaska Airlines
Sat 8/85:48 p.m.
SEA
-
ORD
Nonstop4h 11m
Alaska Airlines
Deal found 5/6C$ 492
Sun 11/107:00 a.m.
ORD
-
SEA
Nonstop4h 45m
Delta
Tue 20/105:45 p.m.
SEA
-
ORD
Nonstop4h 01m
Delta
Deal found 8/6C$ 494
Tue 30/66:55 a.m.
ORD
-
SEA
Nonstop4h 36m
Delta
Wed 1/77:20 a.m.
SEA
-
ORD
Nonstop4h 11m
Delta
Deal found 9/6C$ 495
Mon 20/76:55 a.m.
ORD
-
SEA
Nonstop4h 32m
Delta
Wed 29/77:20 a.m.
SEA
-
ORD
Nonstop4h 08m
Delta
Deal found 10/6C$ 496
Thu 23/76:55 a.m.
ORD
-
SEA
Nonstop4h 32m
Delta
Mon 27/75:40 p.m.
SEA
-
ORD
Nonstop3h 58m
Delta
Deal found 10/6C$ 498
Tue 30/68:02 a.m.
ORD
-
SEA
Nonstop4h 35m
Multiple Airlines
Thu 2/77:41 p.m.
SEA
-
ORD
1 stop23h 02m
Multiple Airlines
Deal found 9/6C$ 499
Wed 16/126:00 a.m.
ORD
-
SEA
Nonstop4h 39m
Alaska Airlines
Sun 27/1212:57 p.m.
SEA
-
ORD
1 stop8h 44m
Alaska Airlines
Deal found 8/6C$ 501
Tue 7/76:20 a.m.
ORD
-
SEA
1 stop10h 05m
Alaska Airlines
Tue 7/75:48 p.m.
SEA
-
ORD
Nonstop4h 11m
Alaska Airlines
Deal found 9/6C$ 502
Sat 8/88:20 p.m.
ORD
-
SEA
Nonstop4h 44m
Alaska Airlines
Sun 16/87:26 a.m.
SEA
-
ORD
1 stop14h 10m
Alaska Airlines
Deal found 9/6C$ 503
Fri 16/106:50 a.m.
ORD
-
SEA
1 stop12h 55m
Frontier
Wed 21/107:41 p.m.
SEA
-
ORD
1 stop12h 20m
Frontier
Deal found 8/6C$ 505
Mon 7/99:48 p.m.
ORD
-
SEA
1 stop14h 00m
Frontier
Sat 12/99:16 p.m.
SEA
-
ORD
1 stop12h 41m
Frontier
Deal found 8/6C$ 506
Sat 5/99:00 a.m.
ORD
-
SEA
Nonstop4h 39m
Alaska Airlines
Sat 12/98:41 a.m.
SEA
-
ORD
1 stop8h 40m
Alaska Airlines
Deal found 8/6C$ 508

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 10 June 2026.

Round-trip from

C$ 492

One-way from

C$ 248

Popular in

June

Cheapest in

January

Average price

C$ 513

Good one-way deal

C$ 636 or less
Alaska Airlines
  • Alaska Airlines
  • 8/8-8/8
  • Nonstop
  • 8h 49m total
  • Chicago to Seattle
Search Deals
United Airlines
  • United Airlines
  • 29/9
  • 2 total stops
  • 16h 15m total
  • Chicago to Seattle
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 120 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 10 June 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

Sun 12/7

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

Nonstop4h 38m

Seattle/Tacoma Intl

Thu 16/7

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

Nonstop4h 11m

C$ 495

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 25/6

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

Nonstop4h 36m

Seattle/Tacoma Intl

Mon 29/6

7:20 a.m.-1:31 p.m.

Nonstop4h 11m

C$ 495

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 17/7

8:07 p.m.-10:58 p.m.

Nonstop4h 51m

Seattle/Tacoma Intl

Mon 20/7

11:11 p.m.-5:18 a.m.

Nonstop4h 07m

C$ 495

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 17/8

3:43 p.m.-6:22 p.m.

Nonstop4h 39m

Seattle/Tacoma Intl

Tue 25/8

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

Nonstop4h 07m

C$ 495
Quickest round-trip

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sun 28/6

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

Nonstop4h 38m

Seattle/Tacoma Intl

Fri 3/7

12:17 a.m.-6:20 a.m.

Nonstop4h 03m

C$ 495

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 7/7

8:20 p.m.-11:04 p.m.

Nonstop4h 44m

Seattle/Tacoma Intl

Mon 13/7

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

Nonstop4h 11m

C$ 495

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 3/12

6:00 a.m.-8:39 a.m.

Nonstop4h 39m

Seattle/Tacoma Intl

Sat 5/12

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

Nonstop4h 05m

C$ 495

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 7/7

6:42 p.m.-9:34 p.m.

Nonstop4h 52m

Seattle/Tacoma Intl

Fri 10/7

12:17 a.m.-6:20 a.m.

Nonstop4h 03m

C$ 495

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 8/7

6:42 p.m.-9:34 p.m.

Nonstop4h 52m

Seattle/Tacoma Intl

Thu 16/7

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

Nonstop4h 11m

C$ 495

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 8/9

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

1 stop9h 19m

Seattle/Tacoma Intl

Tue 8/9

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

Nonstop4h 04m

C$ 508

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/6

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 72 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$ 303). Flying from Chicago O'Hare Intl Airport to Seattle in June is currently the most expensive (average of C$ 548). 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 10 June 2026.

It’s typically best to fly out from Chicago O'Hare Intl Airport to Seattle in the afternoon. Doing so could potentially save you 25% on the flight price compared to flying in the evening, 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 40 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 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 Korean Air (83%), Avianca (82%) and Alaska Airlines (81%).

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

    On average you can expect to pay C$ 636 for a flight from Chicago O'Hare Intl Airport to Seattle. The cheapest flight overall is C$ 296 while the most popular route, (Chicago O'Hare Intl - Seattle/Tacoma Intl) is currently priced at C$ 524.

  • 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$ 303). Flying from Chicago O'Hare Intl Airport to Seattle in June is currently the most expensive (average of C$ 548). 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
Tukwila
Olympia
Marysville
Kirkland

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