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Cheap flights from Chicago O'Hare Intl Airport to Seattle from £66

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 26/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
27 Mar — 3 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 Wednesday or Monday and return on a Monday

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 22 March 2025.

Round-trip from

£131

One-way from

£66

Popular in

July

Cheapest in

April

Average price

£246

Good round-trip deal

£192 or less
Delta
  • Delta
  • 22/4-30/4
  • Nonstop
  • 8h 44m total
  • Chicago to Seattle
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Delta
  • Delta
  • 26/4
  • Nonstop
  • 4h 44m total
  • Chicago to Seattle
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£35 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£6 potential savings vs. average return 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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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 22 March 2025.

Tue 22/407:50ORD - SEA
Nonstop4h 40mDelta
Wed 30/417:55SEA - ORD
Nonstop4h 04mDelta
Deal found 20/3£131
Tue 29/721:32ORD - SEA
Nonstop4h 36mUnited Airlines
Tue 12/809:45SEA - ORD
1 stop8h 16mUnited Airlines
Deal found 19/3£135
Sat 18/1007:00ORD - SEA
1 stop6h 38mAlaska Airlines
Wed 22/1013:55SEA - ORD
Nonstop4h 04mAlaska Airlines
Deal found 21/3£138
Wed 3/906:15ORD - SEA
1 stop7h 30mSouthwest
Sat 13/908:10SEA - ORD
1 stop7h 45mSouthwest
Deal found 21/3£145
Fri 4/414:05ORD - SEA
Nonstop4h 37mHawaiian Airlines
Wed 9/418:02SEA - ORD
Nonstop3h 57mHawaiian Airlines
Deal found 20/3£177
Thu 5/618:17ORD - SEA
1 stop6h 33mSun Country Air
Sun 8/623:59SEA - ORD
1 stop16h 10mSun Country Air
Deal found 21/3£224

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 22 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

19:19-22:00

Nonstop4h 41m

Seattle/Tacoma Intl

Tue 29/4

17:58-23:59

Nonstop4h 01m

£131

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 17/5

18:59-21:42

Nonstop4h 43m

Seattle/Tacoma Intl

Sun 25/5

17:50-23:59

Nonstop4h 09m

£135

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 29/7

21:32-00:08

Nonstop4h 36m

Seattle/Tacoma Intl

Tue 12/8

09:45-20:01

1 stop8h 16m

£135

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 14/5

06:00-08:30

Nonstop4h 30m

Seattle/Tacoma Intl

Wed 28/5

08:00-23:56

1 stop13h 56m

£138

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 3/9

06:15-11:45

1 stop7h 30m

Seattle/Tacoma Intl

Sat 13/9

08:10-17:55

1 stop7h 45m

£145

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 5/6

18:17-22:50

1 stop6h 33m

Seattle/Tacoma Intl

Sun 8/6

23:59-18:09

1 stop16h 10m

£224

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 26/4

06:00-08:30

Nonstop4h 30m

£66

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sun 25/5

07:15-09:46

Nonstop4h 31m

£70

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 24/6

17:25-00:30

1 stop9h 05m

£73

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 26/4

07:00-13:59

1 stop8h 59m

£80

Flights are sorted by cheapest return flights first.

Deals found on 20/3

Showing 1-10 of 13 results
1
2

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 return 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 return flight from O'Hare Intl to Seattle. Price data was last updated on 21 March 2025.

The best time to book flights from Chicago O'Hare Intl Airport to Seattle is 42 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 £622). Flying from Chicago O'Hare Intl Airport to Seattle in July is currently the most expensive (average of £946). 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 22 March 2025.

A simple way to save on the total cost of your ticket is to fly from Chicago O'Hare Intl Airport to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight at midday.

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 22 March 2025.

The most flights from ORD to SEA are scheduled on a Friday (46 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 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 inches 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 22 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 have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very Good
4,278 reviews
Check prices

Entertainment

7.6

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Food

7.1

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
4,278 reviews
Southwest
8.1
Very Good
4,278 reviews
Check prices

Entertainment

7.6

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Food

7.1

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
9,759 reviews
Southwest
8.1
Very Good
4,278 reviews
Check prices

Entertainment

7.6

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Food

7.1

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
7,892 reviews
Southwest
8.1
Very Good
4,278 reviews
Check prices

Entertainment

7.6

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Food

7.1

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
2,326 reviews
Southwest
8.1
Very Good
4,278 reviews
Check prices

Entertainment

7.6

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Food

7.1

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
8,605 reviews
Southwest
8.1
Very Good
4,278 reviews
Check prices

Entertainment

7.6

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Food

7.1

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?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Chicago O'Hare Intl to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from Chicago O'Hare Intl; the airport handles an average of 32 inbound flights from Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Seattle airport from Chicago O'Hare Intl. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

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

    According to our current data, Delta (£131), United Airlines (£135), and Alaska Airlines (£138) offers the cheapest pricing from Chicago O'Hare Intl Airport to Seattle. Delta is priced at 41% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at £66. Southwest flights start at £73 while deals on United Airlines start at £80 one-way.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to Seattle?

    Before booking your flight to Seattle from Chicago O'Hare Intl Airport, check out the most reliable airlines to get you to your destination on time: Air France (92%), Brussels Airlines (83%), Avianca( 82%).

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

    Looking at all options, your cheapest flight can be booked for £134. While the most popular route (Chicago O'Hare Intl - Seattle/Tacoma Intl) can be booked for £417 on average our data indicates £226 when flying from Chicago O'Hare Intl Airport to Seattle.

  • 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 holiday 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 £622). Flying from Chicago O'Hare Intl Airport to Seattle in July is currently the most expensive (average of £946). 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
Tacoma
Leavenworth
Bothell

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Certainly. Search results for flights to Seattle from O'Hare Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from O'Hare Intl today and book when prices fit your budget.

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