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Cheap flights from Chicago O'Hare Intl Airport to Seattle from C$ 120

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 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
17 Jun — 24 Jun1
1 adult

Cheapflights Tip: The best prices from Chicago O'Hare Intl to Seattle/Tacoma Intl are usually found in September or February, booked 78 days in advance, depart on a Tuesday 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 12 June 2025.

Round-trip from

C$ 232

One-way from

C$ 120

Popular in

December

Cheapest in

September

Average price

C$ 455

Good round-trip deal

C$ 278 or less

Good one-way deal

C$ 120 or less
Alaska Airlines
  • Alaska Airlines
  • 7/8-12/8
  • Nonstop
  • 8h 46m total
  • Chicago to Seattle
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Hawaiian Airlines
  • Hawaiian Airlines
  • 31/8
  • 1 total stop
  • 9h 26m total
  • Chicago to Seattle
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Highest demand for flights based on searches. 5% potential increase in price (C$ 31 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 13 potential savings vs. average RT price).
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Average for round-trip flights in June 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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Price to beat on a one-way 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 12 June 2025.

Thu 7/81:03 p.m.ORD - SEA
Nonstop4h 39mAlaska Airlines
Tue 12/86:00 a.m.SEA - ORD
Nonstop4h 07mAlaska Airlines
Deal found 11/6C$ 232
Mon 25/87:19 a.m.ORD - SEA
1 stop8h 09mUnited Airlines
Thu 28/84:55 p.m.SEA - ORD
Nonstop4h 00mUnited Airlines
Deal found 11/6C$ 234
Wed 20/83:10 p.m.ORD - SEA
1 stop8h 25mSouthwest
Wed 27/811:10 a.m.SEA - ORD
2 stops10h 30mSouthwest
Deal found 11/6C$ 238
Wed 30/78:42 p.m.ORD - SEA
Nonstop4h 42mHawaiian Airlines
Wed 6/85:54 p.m.SEA - ORD
Nonstop4h 05mHawaiian Airlines
Deal found 10/6C$ 239
Sat 19/77:11 a.m.ORD - SEA
Nonstop4h 34mDelta
Wed 23/76:10 a.m.SEA - ORD
Nonstop4h 01mDelta
Deal found 11/6C$ 286
Sat 28/66:10 a.m.ORD - SEA
1 stop16h 46mSun Country Air
Fri 4/711:59 p.m.SEA - ORD
1 stop15h 10mSun Country Air
Deal found 11/6C$ 396

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 12 June 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

Thu 7/8

1:03 p.m.-3:42 p.m.

Nonstop4h 39m

Seattle/Tacoma Intl

Tue 12/8

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

Nonstop4h 07m

C$ 232

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 25/8

7:19 a.m.-1:28 p.m.

1 stop8h 09m

Seattle/Tacoma Intl

Thu 28/8

4:55 p.m.-10:55 p.m.

Nonstop4h 00m

C$ 234

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 20/8

3:10 p.m.-9:35 p.m.

1 stop8h 25m

Seattle/Tacoma Intl

Wed 27/8

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

2 stops10h 30m

C$ 238

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 30/7

8:42 p.m.-11:24 p.m.

Nonstop4h 42m

Seattle/Tacoma Intl

Wed 6/8

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

Nonstop4h 05m

C$ 239

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 19/7

7:11 a.m.-9:45 a.m.

Nonstop4h 34m

Seattle/Tacoma Intl

Wed 23/7

6:10 a.m.-12:11 p.m.

Nonstop4h 01m

C$ 286

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 28/6

6:10 a.m.-8:56 p.m.

1 stop16h 46m

Seattle/Tacoma Intl

Fri 4/7

11:59 p.m.-5:09 p.m.

1 stop15h 10m

C$ 396

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sun 31/8

7:00 a.m.-2:26 p.m.

1 stop9h 26m

C$ 120

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 2/7

7:10 a.m.-9:50 a.m.

Nonstop4h 40m

C$ 137

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 8/8

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

Nonstop4h 37m

C$ 141

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 8/7

5:25 p.m.-12:30 a.m.

1 stop9h 05m

C$ 142

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 14 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 9 June 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 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, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Seattle (average of C$ 261). 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 12 June 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 60% on the flight price compared to flying at noon, 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 12 June 2025.

The most flights from ORD to SEA are scheduled on a Thursday (68 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (29 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 mm per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

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 12 June 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Chicago to Seattle by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • 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$ 232. Additional round-trip tickets that might be worth considering are offered by United Airlines and Southwest, with the lowest prices starting at C$ 234 and C$ 238, respectively. Users have found that Alaska Airlines is 40% 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$ 120 is the cheapest one-way deal found within the past few days, from Hawaiian Airlines. You may also be able to find cheap deals on United Airlines and Alaska Airlines, with prices starting from C$ 137 and C$ 141, 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 Air France (91%), United Airlines (90%) and British Airways (83%).

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

    On average you can expect to pay C$ 326 for a flight from Chicago O'Hare Intl Airport to Seattle. The cheapest flight overall is C$ 120 while the most popular route, (Chicago O'Hare Intl - Seattle/Tacoma Intl) is currently priced at C$ 291.

  • 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$ 261). 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 Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Leavenworth
Tukwila
SeaTac
Tacoma
Marysville
Bothell
Renton
Olympia
Lynnwood

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