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Cheap flights from Chicago O'Hare Intl Airport to Seattle from £91

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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
24 May — 31 May1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Chicago O'Hare Intl to Seattle/Tacoma Intl are usually found in January or February, booked 78 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from O'Hare Intl to Seattle

Enter your travel dates to find the best prices.

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 24 April 2026.

Sat 16/507:12
ORD
-
SEA
Nonstop4h 35m
Delta
Wed 20/507:30
SEA
-
ORD
Nonstop4h 15m
Delta
Deal found 22/4£178
Wed 19/820:42
ORD
-
SEA
Nonstop4h 44m
Alaska Airlines
Tue 25/815:47
SEA
-
ORD
1 stop5h 54m
Alaska Airlines
Deal found 22/4£179
Tue 12/507:12
ORD
-
SEA
Nonstop4h 35m
Delta
Wed 20/510:35
SEA
-
ORD
Nonstop4h 14m
Delta
Deal found 22/4£179
Tue 1/905:00
ORD
-
SEA
1 stop7h 03m
United Airlines
Tue 1/915:51
SEA
-
ORD
1 stop6h 08m
United Airlines
Deal found 23/4£182
Tue 12/508:00
ORD
-
SEA
Nonstop4h 40m
Alaska Airlines
Sat 16/512:45
SEA
-
ORD
Nonstop4h 18m
Alaska Airlines
Deal found 22/4£182
Wed 27/518:20
ORD
-
SEA
Nonstop4h 30m
Delta
Thu 4/617:45
SEA
-
ORD
Nonstop4h 10m
Delta
Deal found 21/4£185
Sat 16/507:40
ORD
-
SEA
Nonstop4h 41m
Alaska Airlines
Sat 16/512:45
SEA
-
ORD
Nonstop4h 18m
Alaska Airlines
Deal found 22/4£185
Tue 9/607:40
ORD
-
SEA
Nonstop4h 41m
Alaska Airlines
Tue 9/613:30
SEA
-
ORD
1 stop21h 51m
Alaska Airlines
Deal found 22/4£188
Tue 12/514:15
ORD
-
SEA
1 stop8h 51m
United Airlines
Wed 20/522:53
SEA
-
ORD
Nonstop4h 10m
United Airlines
Deal found 20/4£188
Tue 12/507:12
ORD
-
SEA
Nonstop4h 35m
Delta
Sat 16/510:59
SEA
-
ORD
Nonstop4h 14m
Delta
Deal found 20/4£189
Tue 18/807:20
ORD
-
SEA
1 stop7h 43m
Alaska Airlines
Wed 26/817:48
SEA
-
ORD
Nonstop4h 11m
Alaska Airlines
Deal found 23/4£191
Tue 12/520:48
ORD
-
SEA
Nonstop4h 41m
Alaska Airlines
Mon 18/511:59
SEA
-
ORD
1 stop9h 56m
Alaska Airlines
Deal found 22/4£192

Find 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 24 April 2026.

Round-trip from

£178

One-way from

£91

Popular in

June

Cheapest in

January

Average price

£213

Good one-way deal

£499 or less
Alaska Airlines
  • Alaska Airlines
  • 16/5-18/5
  • Nonstop
  • 8h 45m total
  • Chicago to Seattle
Search Deals
Delta
  • Delta
  • 11/8
  • Nonstop
  • 4h 41m total
  • Chicago to Seattle
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£20 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a one-way flight from Chicago O'Hare Intl to Seattle/Tacoma Intl.
Search Deals

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 24 April 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 1/9

05:00-10:03

1 stop7h 03m

Seattle/Tacoma Intl

Tue 1/9

15:51-23:59

1 stop6h 08m

£182

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 26/8

20:42-23:26

Nonstop4h 44m

Seattle/Tacoma Intl

Sat 29/8

17:48-23:59

Nonstop4h 11m

£185

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 11/5

20:04-22:47

Nonstop4h 43m

Seattle/Tacoma Intl

Tue 19/5

07:00-13:12

Nonstop4h 12m

£185

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 9/5

07:12-09:47

Nonstop4h 35m

Seattle/Tacoma Intl

Sat 16/5

10:59-17:13

Nonstop4h 14m

£226
Fastest return journey

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 3/9

18:00-20:41

Nonstop4h 41m

Seattle/Tacoma Intl

Mon 7/9

17:45-23:47

Nonstop4h 02m

£233

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 11/8

19:59-09:19

1 stop15h 20m

Seattle/Tacoma Intl

Wed 19/8

07:30-19:03

1 stop9h 33m

£236

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 7/8

16:20-19:06

Nonstop4h 46m

Seattle/Tacoma Intl

Thu 13/8

14:26-22:41

1 stop6h 15m

£240

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 8/5

16:50-00:40

1 stop9h 50m

Seattle/Tacoma Intl

Tue 12/5

09:20-18:50

1 stop7h 30m

£241

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 6/5

11:55-22:30

2 stops12h 35m

Seattle/Tacoma Intl

Wed 13/5

09:20-18:50

1 stop7h 30m

£245

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 19/5

07:45-17:45

1 stop12h 00m

Seattle/Tacoma Intl

Tue 26/5

11:35-23:55

2 stops10h 20m

£249

Flights are sorted by cheapest return flights first.

Deals found on 21/4

Showing 1-10 of 21 resultsSorted by cheapest first
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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 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?

The best time to book flights from Chicago O'Hare Intl Airport to Seattle is 77 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 £169). Flying from Chicago O'Hare Intl Airport to Seattle in June is currently the most expensive (average of £252). 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 24 April 2026.

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 evening. If you’re flexible enough to do this you can expect to save up to 52% on your trip compared to booking a flight in the morning.

How much does it cost for a return flight from Chicago O'Hare Intl Airport to Seattle?

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 30 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.

  • How long is the flight from Chicago O'Hare Intl Airport to Seattle?

    For as low as £215, United Airlines can have you in Seattle from Chicago O'Hare Intl Airport in 4h 36m. The distance from Chicago O'Hare Intl Airport to Seattle is about 1715 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 Tahiti Nui (89%), Scandinavian Airlines (84%), Brussels Airlines( 77%).

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

    Looking at all options, your cheapest flight can be booked for £499. While the most popular route (Chicago O'Hare Intl - Seattle/Tacoma Intl) can be booked for £263 on average, our data indicates £499 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 £169). Flying from Chicago O'Hare Intl Airport to Seattle in June is currently the most expensive (average of £252). 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
Tacoma
Federal Way
SeaTac

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from O'Hare Intl today with Cheapflights!

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?

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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