Find flights
Deals
When to book
FAQs

Cheap flights from Chicago O'Hare Intl Airport to Seattle from C$ 133

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
11 oct. — 18 oct.1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Chicago O'Hare Intl to Seattle/Tacoma Intl are usually found in September or February, booked 84 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap 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 11 septiembre 2025.

Round-trip from

C$ 244

One-way from

C$ 133

Popular in

December

Cheapest in

September

Average price

C$ 303
Alaska Airlines
  • Alaska Airlines
  • 24/11-27/11
  • Nonstop
  • 8h 50m total
  • Chicago to Seattle
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 7/12
  • Nonstop
  • 4h 41m total
  • Chicago to Seattle
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 35 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 September 2025
Search Deals

Find flight deals from O'Hare Intl to Seattle

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 11 septiembre 2025.

mar. 28/106:15 a.m.ORD - SEA
1 stop7h 30mSouthwest
mié. 5/118:10 a.m.SEA - ORD
2 stops12h 25mSouthwest
Deal found 11/9C$ 244
mar. 30/92:53 p.m.ORD - SEA
1 stop8h 41mUnited Airlines
jue. 2/101:57 p.m.SEA - ORD
Nonstop4h 15mUnited Airlines
Deal found 11/9C$ 245
sáb. 25/107:00 a.m.ORD - SEA
1 stop9h 35mAlaska Airlines
jue. 30/103:31 p.m.SEA - ORD
Nonstop4h 09mAlaska Airlines
Deal found 11/9C$ 248
mié. 1/106:20 a.m.ORD - SEA
Nonstop4h 32mAlaska Airlines
sáb. 1/115:20 a.m.SEA - ORD
1 stop5h 49mAlaska Airlines
Deal found 10/9C$ 249
mar. 18/1110:00 a.m.ORD - SEA
Nonstop4h 39mAlaska Airlines
mié. 26/1112:25 a.m.SEA - ORD
Nonstop4h 03mAlaska Airlines
Deal found 11/9C$ 251
vie. 17/106:00 a.m.ORD - SEA
Nonstop4h 27mAlaska Airlines
dom. 19/1012:17 a.m.SEA - ORD
Nonstop4h 07mAlaska Airlines
Deal found 11/9C$ 252
sáb. 22/116:15 p.m.ORD - SEA
1 stop6h 55mUnited Airlines
jue. 27/1110:53 a.m.SEA - ORD
Nonstop4h 03mUnited Airlines
Deal found 10/9C$ 254
mar. 18/118:00 a.m.ORD - SEA
Nonstop4h 44mAlaska Airlines
sáb. 22/115:49 p.m.SEA - ORD
Nonstop4h 10mAlaska Airlines
Deal found 11/9C$ 255
mié. 1/106:20 a.m.ORD - SEA
Nonstop4h 32mAlaska Airlines
dom. 2/117:40 p.m.SEA - ORD
1 stop7h 21mAlaska Airlines
Deal found 10/9C$ 256
mié. 22/1012:40 p.m.ORD - SEA
2 stops12h 20mSouthwest
sáb. 25/105:00 a.m.SEA - ORD
1 stop6h 05mSouthwest
Deal found 10/9C$ 258
mié. 22/1012:40 p.m.ORD - SEA
2 stops12h 15mSouthwest
mié. 29/105:50 a.m.SEA - ORD
1 stop6h 10mSouthwest
Deal found 11/9C$ 259
mié. 19/118:00 a.m.ORD - SEA
Nonstop4h 44mAlaska Airlines
vie. 28/115:49 p.m.SEA - ORD
Nonstop4h 10mAlaska Airlines
Deal found 11/9C$ 261

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 11 septiembre 2025.
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

jue. 16/10

7:10 a.m.-9:43 a.m.

Nonstop4h 33m

Seattle/Tacoma Intl

mar. 21/10

7:37 p.m.-5:13 a.m.

1 stop7h 36m

C$ 245

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

mié. 1/10

6:20 a.m.-8:52 a.m.

Nonstop4h 32m

Seattle/Tacoma Intl

dom. 2/11

7:40 p.m.-5:01 a.m.

1 stop7h 21m

C$ 256

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

vie. 5/12

6:13 p.m.-8:57 p.m.

Nonstop4h 44m

Seattle/Tacoma Intl

dom. 14/12

11:15 a.m.-5:18 p.m.

Nonstop4h 03m

C$ 256

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

dom. 9/11

6:00 a.m.-8:40 a.m.

Nonstop4h 40m

Seattle/Tacoma Intl

mié. 12/11

5:20 a.m.-1:09 p.m.

1 stop5h 49m

C$ 261

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

vie. 3/10

1:01 p.m.-3:35 p.m.

Nonstop4h 34m

Seattle/Tacoma Intl

sáb. 4/10

12:17 a.m.-6:24 a.m.

Nonstop4h 07m

C$ 265

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

jue. 20/11

6:00 a.m.-8:40 a.m.

Nonstop4h 40m

Seattle/Tacoma Intl

mar. 25/11

6:00 a.m.-12:03 p.m.

Nonstop4h 03m

C$ 267

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

mié. 24/12

9:15 a.m.-12:03 p.m.

Nonstop4h 48m

Seattle/Tacoma Intl

vie. 2/1

10:52 a.m.-5:01 p.m.

Nonstop4h 09m

C$ 269

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

jue. 25/9

7:10 a.m.-9:45 a.m.

Nonstop4h 35m

Seattle/Tacoma Intl

mié. 8/10

5:55 p.m.-11:50 p.m.

Nonstop3h 55m

C$ 269

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

sáb. 27/9

4:10 p.m.-6:49 p.m.

Nonstop4h 39m

Seattle/Tacoma Intl

lun. 6/10

10:50 a.m.-5:05 p.m.

Nonstop4h 15m

C$ 281

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

vie. 17/10

7:00 a.m.-2:35 p.m.

1 stop9h 35m

Seattle/Tacoma Intl

mar. 21/10

12:17 a.m.-6:24 a.m.

Nonstop4h 07m

C$ 281

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 23 results
1
2
3

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 29 August 2025.

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 84 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$ 262). Flying from Chicago O'Hare Intl Airport to Seattle in December is currently the most expensive (average of C$ 353). 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 11 septiembre 2025.

It’s typically best to fly out from Chicago O'Hare Intl Airport to Seattle in the evening. Doing so could potentially save you 38% 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 45 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 32m. Fly via Alaska Airlines, Delta, or Hawaiian 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 Delta (87%), Air France (87%) and KLM (83%).

  • 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$ 262). Flying from Chicago O'Hare Intl Airport to Seattle in December is currently the most expensive (average of C$ 353). 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
Leavenworth
SeaTac
Tukwila
Tacoma
Bothell
Cashmere
Renton
Olympia
Marysville
Lynnwood

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from O'Hare Intl to Seattle?

Cheapflights makes it easy to find O'Hare Intl to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from O'Hare Intl to Seattle?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from O'Hare Intl to Seattle for you. Better yet — we are completely free to use.

Can Cheapflights find flights from O'Hare Intl to Seattle with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from O'Hare Intl to Seattle flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from O'Hare Intl to Seattle become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.