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Cheap flights from Chicago O'Hare Intl Airport to Seattle from C$ 125

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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
12 Apr — 19 Apr1
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 September, 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 13 March 2026.

Sat 4/41:25 p.m.
ORD
-
SEA
Nonstop4h 38m
United Airlines
Sat 18/411:35 a.m.
SEA
-
ORD
1 stop9h 54m
United Airlines
Deal found 8/3C$ 241
Wed 15/47:15 a.m.
ORD
-
SEA
Nonstop4h 49m
Delta
Sat 18/45:59 p.m.
SEA
-
ORD
Nonstop3h 59m
Delta
Deal found 8/3C$ 245
Sat 25/43:05 p.m.
ORD
-
SEA
1 stop9h 05m
Southwest
Sat 2/52:15 p.m.
SEA
-
ORD
1 stop7h 10m
Southwest
Deal found 11/3C$ 246
Sat 2/53:05 p.m.
ORD
-
SEA
1 stop9h 05m
Southwest
Sat 9/510:50 a.m.
SEA
-
ORD
1 stop9h 30m
Southwest
Deal found 8/3C$ 249
Wed 29/44:50 p.m.
ORD
-
SEA
1 stop9h 05m
Southwest
Wed 6/58:25 a.m.
SEA
-
ORD
1 stop12h 30m
Southwest
Deal found 11/3C$ 254
Wed 22/49:06 a.m.
ORD
-
SEA
Nonstop4h 42m
United Airlines
Mon 27/411:59 p.m.
SEA
-
ORD
Nonstop4h 00m
United Airlines
Deal found 11/3C$ 257
Sat 16/56:55 p.m.
ORD
-
SEA
Nonstop4h 45m
Delta
Tue 19/511:05 p.m.
SEA
-
ORD
1 stop7h 22m
Delta
Deal found 8/3C$ 258
Sat 18/47:15 a.m.
ORD
-
SEA
Nonstop4h 49m
Delta
Sat 25/411:10 a.m.
SEA
-
ORD
1 stop8h 08m
Delta
Deal found 8/3C$ 260
Wed 29/41:18 p.m.
ORD
-
SEA
1 stop8h 27m
United Airlines
Wed 6/57:00 a.m.
SEA
-
ORD
Nonstop4h 12m
United Airlines
Deal found 11/3C$ 261

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 13 March 2026.

Round-trip from

C$ 241

One-way from

C$ 125

Popular in

November

Cheapest in

January

Average price

C$ 392
United Airlines
  • United Airlines
  • 4/4-18/4
  • 1 total stop
  • 14h 32m total
  • Chicago to Seattle
Search Deals
Southwest
  • Southwest
  • 6/6
  • 1 total stop
  • 8h 20m total
  • Chicago to Seattle
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 29 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 March 2026
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 13 March 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 10/5

9:20 p.m.-11:59 p.m.

Nonstop4h 39m

Seattle/Tacoma Intl

Tue 19/5

10:52 a.m.-5:05 p.m.

Nonstop4h 13m

C$ 257

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 22/4

7:35 a.m.-2:46 p.m.

1 stop9h 11m

Seattle/Tacoma Intl

Tue 28/4

10:35 a.m.-4:39 p.m.

Nonstop4h 04m

C$ 282

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 22/4

4:50 p.m.-11:55 p.m.

1 stop9h 05m

Seattle/Tacoma Intl

Tue 28/4

11:40 a.m.-10:55 p.m.

1 stop9h 15m

C$ 295

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 8/5

7:45 p.m.-12:12 a.m.

1 stop6h 27m

Seattle/Tacoma Intl

Sat 16/5

7:30 a.m.-8:24 p.m.

1 stop10h 54m

C$ 295

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 1/5

7:09 p.m.-11:54 p.m.

1 stop6h 45m

Seattle/Tacoma Intl

Sun 3/5

5:59 p.m.-11:58 p.m.

Nonstop3h 59m

C$ 309

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sun 19/4

9:54 p.m.-12:34 a.m.

Nonstop4h 40m

Seattle/Tacoma Intl

Wed 22/4

7:37 p.m.-6:20 a.m.

1 stop8h 43m

C$ 371

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 12/5

7:45 a.m.-1:35 p.m.

1 stop7h 50m

Seattle/Tacoma Intl

Tue 19/5

11:35 a.m.-11:55 p.m.

2 stops10h 20m

C$ 389
Quickest round-trip

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sun 12/4

6:00 a.m.-8:37 a.m.

Nonstop4h 37m

Seattle/Tacoma Intl

Sun 19/4

12:35 a.m.-6:39 a.m.

Nonstop4h 04m

C$ 418

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 29/6

5:00 a.m.-10:00 a.m.

1 stop7h 00m

Seattle/Tacoma Intl

Mon 29/6

11:52 p.m.-5:58 a.m.

Nonstop4h 06m

C$ 442

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 2/5

3:00 p.m.-11:29 p.m.

2 stops10h 29m

Seattle/Tacoma Intl

Sun 3/5

6:58 p.m.-6:00 a.m.

1 stop9h 02m

C$ 442

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/3

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?

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 6 March 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 78 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$ 152). Flying from Chicago O'Hare Intl Airport to Seattle in December is currently the most expensive (average of C$ 242). 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 13 March 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 29 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 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 Brussels Airlines (87%), Austrian Airlines (87%) and United Airlines (81%).

  • 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$ 152). Flying from Chicago O'Hare Intl Airport to Seattle in December is currently the most expensive (average of C$ 242). 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
Leavenworth
Mukilteo
Tacoma
Kent
Bothell
Cashmere
Tukwila
Olympia
Renton
Marysville
Lynnwood
Kirkland

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