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Cheap flights from Chicago O'Hare Intl Airport to Seattle from C$ 129

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 23/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
31 Mar — 7 Apr1
1 adult

Cheapflights Tip: The best prices from Chicago O'Hare Intl to Seattle/Tacoma Intl are usually found in April or September, booked 42 days in advance, depart on a Tuesday or Saturday 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 26 March 2025.

Round-trip from

C$ 242

One-way from

C$ 129

Popular in

July

Cheapest in

April

Average price

C$ 455

Good round-trip deal

C$ 285 or less

Good one-way deal

C$ 342 or less
Delta
  • Delta
  • 22/4-29/4
  • Nonstop
  • 8h 51m total
  • Chicago to Seattle
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United Airlines
  • United Airlines
  • 23/4
  • 1 total stop
  • 8h 59m total
  • Chicago to Seattle
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Highest demand for flights based on searches. 17% potential increase in price (C$ 121 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 19 potential savings vs. average RT price).
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Average for round-trip flights in March 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 26 March 2025.

Tue 22/49:00 a.m.ORD - SEA
Nonstop4h 32mAlaska Airlines
Sat 26/45:58 p.m.SEA - ORD
Nonstop4h 01mAlaska Airlines
Deal found 25/3C$ 242
Sat 26/47:50 a.m.ORD - SEA
Nonstop4h 44mDelta
Sat 3/55:55 p.m.SEA - ORD
Nonstop4h 04mDelta
Deal found 25/3C$ 243
Tue 22/48:00 p.m.ORD - SEA
Nonstop4h 43mUnited Airlines
Tue 29/47:08 a.m.SEA - ORD
1 stop8h 02mUnited Airlines
Deal found 25/3C$ 250
Wed 23/45:56 p.m.ORD - SEA
Nonstop4h 36mHawaiian Airlines
Sun 27/411:59 p.m.SEA - ORD
Nonstop4h 06mHawaiian Airlines
Deal found 25/3C$ 282
Tue 8/45:25 p.m.ORD - SEA
1 stop7h 35mSouthwest
Tue 15/42:50 p.m.SEA - ORD
1 stop6h 15mSouthwest
Deal found 25/3C$ 312
Thu 24/49:38 p.m.ORD - SEA
1 stop17h 47mSpirit Airlines
Sat 26/412:30 p.m.SEA - ORD
1 stop16h 03mSpirit Airlines
Deal found 25/3C$ 332
Fri 10/106:39 p.m.ORD - SEA
1 stop24h 34mSun Country Air
Sun 12/106:34 p.m.SEA - ORD
1 stop14h 05mSun Country Air
Deal found 26/3C$ 458
Wed 23/412:09 p.m.ORD - SEA
1 stop11h 05mAmerican Airlines
Tue 29/41:35 p.m.SEA - ORD
Nonstop4h 05mAmerican Airlines
Deal found 25/3C$ 506

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 26 March 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

Tue 22/4

9:00 a.m.-11:32 a.m.

Nonstop4h 32m

Seattle/Tacoma Intl

Sat 26/4

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

Nonstop4h 01m

C$ 242

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 26/4

7:50 a.m.-10:34 a.m.

Nonstop4h 44m

Seattle/Tacoma Intl

Sat 3/5

5:55 p.m.-11:59 p.m.

Nonstop4h 04m

C$ 243

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 22/4

8:00 p.m.-10:43 p.m.

Nonstop4h 43m

Seattle/Tacoma Intl

Tue 29/4

7:08 a.m.-5:10 p.m.

1 stop8h 02m

C$ 250

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 23/4

5:56 p.m.-8:32 p.m.

Nonstop4h 36m

Seattle/Tacoma Intl

Sun 27/4

11:59 p.m.-6:05 a.m.

Nonstop4h 06m

C$ 282

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 8/4

5:25 p.m.-11:00 p.m.

1 stop7h 35m

Seattle/Tacoma Intl

Tue 15/4

2:50 p.m.-11:05 p.m.

1 stop6h 15m

C$ 312

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 24/4

9:38 p.m.-1:25 p.m.

1 stop17h 47m

Seattle/Tacoma Intl

Sat 26/4

12:30 p.m.-6:33 a.m.

1 stop16h 03m

C$ 332

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 24/4

8:25 p.m.-11:09 p.m.

Nonstop4h 44m

Seattle/Tacoma Intl

Sun 27/4

11:59 p.m.-6:04 a.m.

Nonstop4h 05m

C$ 458

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 26/5

9:05 p.m.-9:15 a.m.

1 stop14h 10m

Seattle/Tacoma Intl

Sun 1/6

11:59 p.m.-7:09 p.m.

1 stop17h 10m

C$ 465

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 23/4

7:00 a.m.-1:59 p.m.

1 stop8h 59m

C$ 129

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 23/7

4:00 p.m.-11:15 p.m.

1 stop9h 15m

C$ 134

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/3

Showing 1-10 of 16 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 21 March 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 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, 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 26 March 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 26 March 2025.

The most flights from ORD to SEA are scheduled on a Wednesday (47 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 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 26 March 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,274 reviews
Check prices

Crew

8.6

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,274 reviews
Southwest
8.1
Very good
4,274 reviews
Check prices

Crew

8.6

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,789 reviews
Southwest
8.1
Very good
4,274 reviews
Check prices

Crew

8.6

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,891 reviews
Southwest
8.1
Very good
4,274 reviews
Check prices

Crew

8.6

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Hawaiian Airlines
7.9
Good
2,330 reviews
Southwest
8.1
Very good
4,274 reviews
Check prices

Crew

8.6

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,608 reviews
Southwest
8.1
Very good
4,274 reviews
Check prices

Crew

8.6

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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.

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

    Flying on Delta is currently your cheapest option to Seattle, with prices starting at C$ 242. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and United Airlines, with the lowest prices starting at C$ 249 and C$ 250, respectively. Users have found that Delta is 41% 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$ 129 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Southwest and Alaska Airlines, with prices starting from C$ 134 and C$ 150, 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 (92%), Brussels Airlines (83%) and Avianca (82%).

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

    On average you can expect to pay C$ 501 for a flight from Chicago O'Hare Intl Airport to Seattle. The cheapest flight overall is C$ 236 while the most popular route, (Chicago O'Hare Intl - Seattle/Tacoma Intl) is currently priced at C$ 518.

  • 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
SeaTac
Tukwila
Marysville
Bothell
Leavenworth
Tacoma
Olympia
Lynnwood

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