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Cheap flights from Chicago O'Hare Intl Airport to Seattle from C$ 123

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 19/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
20 Feb — 27 Feb1
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 February or September, booked 42 days in advance, depart on a Thursday or Saturday 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 21 January 2026.

Wed 11/28:00 a.m.
ORD
-
SEA
Nonstop4h 46m
Multiple Airlines
Mon 16/28:00 a.m.
SEA
-
ORD
Nonstop4h 11m
Multiple Airlines
Deal found 21/1C$ 242
Sat 14/23:54 p.m.
ORD
-
SEA
Nonstop4h 46m
Alaska Airlines
Fri 20/210:22 a.m.
SEA
-
ORD
Nonstop4h 11m
Alaska Airlines
Deal found 20/1C$ 245
Fri 6/32:20 p.m.
ORD
-
SEA
Nonstop4h 40m
Delta
Mon 9/35:55 p.m.
SEA
-
ORD
Nonstop3h 56m
Delta
Deal found 21/1C$ 246
Thu 12/22:20 p.m.
ORD
-
SEA
Nonstop4h 40m
Delta
Wed 18/25:55 p.m.
SEA
-
ORD
Nonstop3h 57m
Delta
Deal found 21/1C$ 247
Thu 12/24:20 p.m.
ORD
-
SEA
Nonstop4h 43m
United Airlines
Fri 20/212:32 p.m.
SEA
-
ORD
1 stop8h 54m
United Airlines
Deal found 20/1C$ 253
Thu 12/27:00 a.m.
ORD
-
SEA
Nonstop4h 51m
Alaska Airlines
Wed 18/29:40 p.m.
SEA
-
ORD
1 stop13h 31m
Alaska Airlines
Deal found 20/1C$ 259
Thu 5/38:01 p.m.
ORD
-
SEA
Nonstop4h 44m
United Airlines
Sun 8/37:00 a.m.
SEA
-
ORD
Nonstop4h 06m
United Airlines
Deal found 21/1C$ 260
Thu 12/34:20 p.m.
ORD
-
SEA
Nonstop4h 43m
United Airlines
Fri 13/311:59 p.m.
SEA
-
ORD
Nonstop3h 57m
United Airlines
Deal found 20/1C$ 263
Mon 9/37:00 a.m.
ORD
-
SEA
Nonstop4h 51m
Alaska Airlines
Mon 9/312:56 p.m.
SEA
-
ORD
1 stop9h 03m
Alaska Airlines
Deal found 20/1C$ 264
Mon 16/38:01 p.m.
ORD
-
SEA
Nonstop4h 44m
United Airlines
Fri 20/311:59 p.m.
SEA
-
ORD
Nonstop3h 57m
United Airlines
Deal found 19/1C$ 268
Fri 20/24:20 p.m.
ORD
-
SEA
Nonstop4h 43m
United Airlines
Sun 22/27:00 a.m.
SEA
-
ORD
Nonstop4h 06m
United Airlines
Deal found 21/1C$ 271
Tue 10/23:44 p.m.
ORD
-
SEA
1 stop8h 31m
Alaska Airlines
Wed 18/25:55 p.m.
SEA
-
ORD
Nonstop4h 01m
Alaska Airlines
Deal found 20/1C$ 272

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 21 January 2026.

Round-trip from

C$ 242

One-way from

C$ 123

Popular in

June

Cheapest in

February

Average price

C$ 358

Good round-trip deal

C$ 240 or less
Hawaiian Airlines
  • Hawaiian Airlines
  • 11/2-17/2
  • Nonstop
  • 8h 57m total
  • Chicago to Seattle
Search Deals
United Airlines
  • United Airlines
  • 17/2
  • Nonstop
  • 4h 44m total
  • Chicago to Seattle
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip 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 21 January 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

O'Hare Intl

Fly to

Seattle

Route

Depart

Return

Price

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 6/3

5:29 p.m.-8:16 p.m.

Nonstop4h 47m

Seattle/Tacoma Intl

Mon 9/3

5:55 p.m.-11:56 p.m.

Nonstop4h 01m

C$ 245

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 18/2

7:40 a.m.-10:25 a.m.

Nonstop4h 45m

Seattle/Tacoma Intl

Sat 28/2

5:55 p.m.-11:52 p.m.

Nonstop3h 57m

C$ 245

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 2/4

7:55 p.m.-10:37 p.m.

Nonstop4h 42m

Seattle/Tacoma Intl

Tue 7/4

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

Nonstop4h 00m

C$ 245

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sun 15/2

7:40 a.m.-10:25 a.m.

Nonstop4h 45m

Seattle/Tacoma Intl

Sun 22/2

7:10 a.m.-1:22 p.m.

Nonstop4h 12m

C$ 245

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sun 8/3

7:25 a.m.-10:03 a.m.

Nonstop4h 38m

Seattle/Tacoma Intl

Sat 14/3

5:55 p.m.-11:51 p.m.

Nonstop3h 56m

C$ 245

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 6/3

2:20 p.m.-5:00 p.m.

Nonstop4h 40m

Seattle/Tacoma Intl

Mon 9/3

5:55 p.m.-11:51 p.m.

Nonstop3h 56m

C$ 246

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 5/3

12:54 p.m.-7:28 p.m.

1 stop8h 34m

Seattle/Tacoma Intl

Sun 8/3

7:00 a.m.-1:06 p.m.

Nonstop4h 06m

C$ 286

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 12/3

1:00 p.m.-3:46 p.m.

Nonstop4h 46m

Seattle/Tacoma Intl

Sat 21/3

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

Nonstop4h 10m

C$ 293

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 13/2

7:00 a.m.-9:51 a.m.

Nonstop4h 51m

Seattle/Tacoma Intl

Wed 18/2

10:48 p.m.-1:11 p.m.

1 stop12h 23m

C$ 296

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 14/2

5:29 p.m.-8:16 p.m.

Nonstop4h 47m

Seattle/Tacoma Intl

Wed 18/2

9:40 p.m.-1:11 p.m.

1 stop13h 31m

C$ 296

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/1

Showing 1-10 of 20 results
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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?

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to Seattle. Price data was last updated on 16 January 2026.

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 42 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, October is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Seattle (average of C$ 155). Flying from Chicago O'Hare Intl Airport to Seattle in December is currently the most expensive (average of C$ 246). 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 21 January 2026.

It’s typically best to fly out from Chicago O'Hare Intl Airport to Seattle at noon. Doing so could potentially save you 40% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 23 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 40m. 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. 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 Brussels Airlines (72%), United Airlines (66%) and American Airlines (65%).

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

    On average you can expect to pay C$ 245 for a flight from Chicago O'Hare Intl Airport to Seattle. The cheapest flight overall is C$ 129 while the most popular route, (Chicago O'Hare Intl - Seattle/Tacoma Intl) is currently priced at C$ 245.

  • 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, October is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Seattle (average of C$ 155). Flying from Chicago O'Hare Intl Airport to Seattle in December is currently the most expensive (average of C$ 246). 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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Leavenworth
SeaTac
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Kent
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