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Cheap flights from Chicago O'Hare Intl Airport to Seattle from £134

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 22/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
27 Aug — 3 Sep1
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 41 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 28 July 2026.

Mon 5/1014:21
ORD
-
SEA
1 stop9h 12m
Alaska Airlines
Mon 5/1023:41
SEA
-
ORD
Nonstop3h 59m
Alaska Airlines
Deal found 26/7£218
Fri 30/1014:21
ORD
-
SEA
1 stop9h 13m
Alaska Airlines
Fri 30/1000:14
SEA
-
ORD
Nonstop4h 06m
Alaska Airlines
Deal found 24/7£222
Mon 2/1119:56
ORD
-
SEA
1 stop20h 51m
Alaska Airlines
Tue 3/1117:46
SEA
-
ORD
Nonstop4h 11m
Alaska Airlines
Deal found 24/7£223
Mon 14/906:00
ORD
-
SEA
Nonstop4h 30m
Multiple Airlines
Fri 18/919:45
SEA
-
ORD
1 stop7h 53m
Multiple Airlines
Deal found 25/7£233
Tue 6/1014:21
ORD
-
SEA
1 stop9h 12m
Alaska Airlines
Tue 6/1023:41
SEA
-
ORD
Nonstop3h 59m
Alaska Airlines
Deal found 26/7£234
Sun 6/906:00
ORD
-
SEA
Nonstop4h 30m
Alaska Airlines
Sun 6/911:41
SEA
-
ORD
1 stop10h 18m
Alaska Airlines
Deal found 24/7£238
Fri 18/914:18
ORD
-
SEA
1 stop9h 22m
Alaska Airlines
Fri 18/900:16
SEA
-
ORD
Nonstop4h 04m
Alaska Airlines
Deal found 22/7£260
Tue 25/813:03
ORD
-
SEA
Nonstop4h 38m
Alaska Airlines
Tue 25/817:51
SEA
-
ORD
Nonstop4h 08m
Alaska Airlines
Deal found 23/7£264
Thu 27/812:54
ORD
-
SEA
Nonstop4h 46m
Delta
Thu 3/910:50
SEA
-
ORD
Nonstop4h 10m
Delta
Deal found 27/7£268
Sat 3/1014:14
ORD
-
SEA
1 stop8h 19m
Alaska Airlines
Sat 3/1023:41
SEA
-
ORD
Nonstop3h 59m
Alaska Airlines
Deal found 26/7£271
Fri 11/907:00
ORD
-
SEA
Nonstop4h 35m
Delta
Wed 23/917:50
SEA
-
ORD
Nonstop4h 07m
Delta
Deal found 27/7£272

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 28 July 2026.

Round-trip from

£218

One-way from

£134

Popular in

July

Cheapest in

January

Average price

£305

Good round-trip deal

£312 or less

Good one-way deal

£505 or less
Alaska Airlines
  • Alaska Airlines
  • 5/10-5/10
  • 1 total stop
  • 13h 11m total
  • Chicago to Seattle
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Delta
  • Delta
  • 22/8
  • Nonstop
  • 4h 46m total
  • Chicago to Seattle
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£41 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Chicago O'Hare Intl to Seattle/Tacoma Intl.
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 28 July 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

Thu 29/10

07:00-09:45

Nonstop4h 45m

Seattle/Tacoma Intl

Tue 3/11

17:30-23:34

Nonstop4h 04m

£268

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 1/9

15:43-18:16

Nonstop4h 33m

Seattle/Tacoma Intl

Fri 4/9

00:16-06:20

Nonstop4h 04m

£268

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 9/1

19:55-22:29

Nonstop4h 34m

Seattle/Tacoma Intl

Mon 11/1

07:00-13:00

Nonstop4h 00m

£268

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 8/9

07:00-09:36

Nonstop4h 36m

Seattle/Tacoma Intl

Sat 26/9

23:13-05:19

Nonstop4h 06m

£268
Fastest return journey

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 19/8

17:56-20:35

Nonstop4h 39m

Seattle/Tacoma Intl

Mon 24/8

17:35-23:29

Nonstop3h 54m

£268

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 19/8

06:00-08:30

Nonstop4h 30m

Seattle/Tacoma Intl

Mon 24/8

06:00-12:07

Nonstop4h 07m

£275

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 14/12

12:40-15:19

Nonstop4h 39m

Seattle/Tacoma Intl

Mon 21/12

17:45-23:46

Nonstop4h 01m

£275

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 10/9

15:52-18:25

Nonstop4h 33m

Seattle/Tacoma Intl

Tue 15/9

07:40-19:21

1 stop9h 41m

£275

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 24/9

06:00-08:30

Nonstop4h 30m

Seattle/Tacoma Intl

Mon 28/9

14:18-23:59

1 stop7h 41m

£275

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 18/9

20:01-22:45

Nonstop4h 44m

Seattle/Tacoma Intl

Sat 26/9

17:10-23:14

Nonstop4h 04m

£280

Flights are sorted by cheapest return flights first.

Deals found on 27/7

Showing 1-10 of 24 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 40 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 £164). Flying from Chicago O'Hare Intl Airport to Seattle in July is currently the most expensive (average of £305). 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 28 July 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 29% on your trip compared to booking a flight in the afternoon.

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

Airfare is below average for this route at the moment.

Chicago O'Hare Intl Airport to Seattle flights typically cost between £221 and £328 in October.
The cheapest return price found within the last 5 days was £218 on Alaska Airlines (5 Oct–5 Oct).

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 48 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 £268, Delta can have you in Seattle from Chicago O'Hare Intl Airport in 4h 33m. The distance from Chicago O'Hare Intl Airport to Seattle is about 1715 mi. Most flights are nonstop.

  • 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 (83%), Austrian Airlines (81%), Brussels Airlines( 78%).

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

    Looking at all options, your cheapest flight can be booked for £308. While the most popular route (Chicago O'Hare Intl - Seattle/Tacoma Intl) can be booked for £275 on average, our data indicates £409 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 £164). Flying from Chicago O'Hare Intl Airport to Seattle in July is currently the most expensive (average of £305). 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
Federal Way
SeaTac

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Why should you use Cheapflights to find cheap flight tickets from O'Hare Intl to Seattle?

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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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