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Cheap flights from Chicago O'Hare Intl Airport to Seattle from C$ 136

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 30/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
3 Aug — 10 Aug1
1 adult

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 Tuesday or Thursday 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 29 July 2025.

Round-trip from

C$ 251

One-way from

C$ 136

Popular in

December

Cheapest in

September

Average price

C$ 457

Good round-trip deal

C$ 336 or less
Alaska Airlines
  • Alaska Airlines
  • 10/9-10/9
  • Nonstop
  • 8h 42m total
  • Chicago to Seattle
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Southwest
  • Southwest
  • 30/8
  • 1 total stop
  • 8h 10m total
  • Chicago to Seattle
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 33 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 July 2025
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Price to beat on a round-trip flight from Chicago O'Hare Intl to Seattle/Tacoma Intl.
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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 29 July 2025.

Wed 10/910:00 a.m.ORD - SEA
Nonstop4h 34mAlaska Airlines
Wed 10/93:59 p.m.SEA - ORD
Nonstop4h 08mAlaska Airlines
Deal found 27/7C$ 251
Sat 23/87:15 a.m.ORD - SEA
Nonstop4h 30mDelta
Sat 30/85:50 p.m.SEA - ORD
Nonstop4h 01mDelta
Deal found 29/7C$ 252
Tue 9/94:10 p.m.ORD - SEA
Nonstop4h 39mUnited Airlines
Tue 23/97:10 a.m.SEA - ORD
1 stop8h 00mUnited Airlines
Deal found 27/7C$ 268
Sat 30/84:20 p.m.ORD - SEA
1 stop8h 10mSouthwest
Sat 6/95:00 a.m.SEA - ORD
1 stop6h 05mSouthwest
Deal found 28/7C$ 278
Wed 27/86:20 a.m.ORD - SEA
Nonstop4h 30mHawaiian Airlines
Mon 1/912:59 a.m.SEA - ORD
Nonstop4h 04mHawaiian Airlines
Deal found 28/7C$ 292

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 29 July 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

Wed 10/9

10:00 a.m.-12:34 p.m.

Nonstop4h 34m

Seattle/Tacoma Intl

Wed 10/9

3:59 p.m.-10:07 p.m.

Nonstop4h 08m

C$ 251

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 23/8

7:15 a.m.-9:45 a.m.

Nonstop4h 30m

Seattle/Tacoma Intl

Sat 30/8

5:50 p.m.-11:51 p.m.

Nonstop4h 01m

C$ 252

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 9/9

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

Nonstop4h 39m

Seattle/Tacoma Intl

Tue 23/9

7:10 a.m.-5:10 p.m.

1 stop8h 00m

C$ 268

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 30/8

4:20 p.m.-10:30 p.m.

1 stop8h 10m

Seattle/Tacoma Intl

Sat 6/9

5:00 a.m.-1:05 p.m.

1 stop6h 05m

C$ 278

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 11/9

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

Nonstop4h 32m

Seattle/Tacoma Intl

Sun 14/9

12:59 a.m.-7:03 a.m.

Nonstop4h 04m

C$ 298

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 30/8

4:20 p.m.-10:30 p.m.

1 stop8h 10m

C$ 136

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 3/9

6:00 a.m.-1:03 p.m.

1 stop9h 03m

C$ 137

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 15/10

8:20 a.m.-5:34 p.m.

1 stop11h 14m

C$ 143

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 22/8

6:20 a.m.-8:50 a.m.

Nonstop4h 30m

C$ 158

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sun 26/10

7:37 a.m.-10:15 a.m.

Nonstop4h 38m

C$ 171

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

Showing 1-10 of 11 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 25 July 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 64 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 29 July 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.

Weekly flight availability from Chicago O'Hare Intl Airport to Seattle

Explore weekly flight availability from O'Hare Intl to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 29 July 2025.

The most flights from ORD to SEA are scheduled on a Monday (76 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (49 on average).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 29 July 2025.
See what other customers who have flown with Alaska Airlines,Southwest, andDelta from Chicago O'Hare Intl Airport to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Hawaiian Airlines
7.8
Good
2,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,899 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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 61 daily inbound flights from Chicago O'Hare Intl from 0 different airlines.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to Seattle round-trip?

    Flying on Alaska Airlines is currently your cheapest option to Seattle, with prices starting at C$ 251. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at C$ 252 and C$ 268, respectively. Users have found that Alaska Airlines is 35% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Seattle one-way?

    C$ 136 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on United Airlines and Alaska Airlines, with prices starting from C$ 137 and C$ 143, respectively.

  • 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 KLM (100%), Air France (86%) and Delta (85%).

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

    On average you can expect to pay C$ 401 for a flight from Chicago O'Hare Intl Airport to Seattle. The cheapest flight overall is C$ 336 while the most popular route, (Chicago O'Hare Intl - Seattle/Tacoma Intl) is currently priced at C$ 434.

  • 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
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