Find flights
Deals
When to book
FAQs

Cheap flights from Chicago O'Hare Intl Airport to Seattle from £71

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
12 אוק' — 19 אוק'1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Chicago O'Hare Intl to Seattle/Tacoma Intl are usually found in September or February, booked 84 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

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 ספטמבר 2025.

Round-trip from

£130

One-way from

£71

Popular in

December

Cheapest in

September

Average price

£162
Southwest
  • Southwest
  • 28/10-5/11
  • 3 total stops
  • 19h 55m total
  • Chicago to Seattle
Search Deals
Hawaiian Airlines
  • Hawaiian Airlines
  • 12/10
  • Nonstop
  • 4h 27m total
  • Chicago to Seattle
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£9 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 ספטמבר 2025.

ג' 28/1006:15ORD - SEA
1 stop7h 30mSouthwest
ד' 5/1108:10SEA - ORD
2 stops12h 25mSouthwest
Deal found 11/9£130
ה' 16/1007:10ORD - SEA
Nonstop4h 33mUnited Airlines
ב' 20/1019:37SEA - ORD
1 stop7h 36mUnited Airlines
Deal found 11/9£131
ו' 10/1006:00ORD - SEA
Nonstop4h 27mAlaska Airlines
ד' 15/1017:50SEA - ORD
Nonstop4h 09mAlaska Airlines
Deal found 12/9£131
ש' 25/1007:00ORD - SEA
1 stop9h 35mAlaska Airlines
ה' 30/1015:31SEA - ORD
Nonstop4h 09mAlaska Airlines
Deal found 11/9£132
ד' 1/1006:20ORD - SEA
Nonstop4h 32mAlaska Airlines
ש' 1/1105:20SEA - ORD
1 stop5h 49mAlaska Airlines
Deal found 10/9£133
ג' 18/1110:00ORD - SEA
Nonstop4h 39mAlaska Airlines
ד' 26/1100:25SEA - ORD
Nonstop4h 03mAlaska Airlines
Deal found 11/9£134
ו' 17/1006:00ORD - SEA
Nonstop4h 27mHawaiian Airlines
א' 19/1000:17SEA - ORD
Nonstop4h 07mHawaiian Airlines
Deal found 12/9£134
ש' 22/1118:15ORD - SEA
1 stop6h 55mUnited Airlines
ה' 27/1110:53SEA - ORD
Nonstop4h 03mUnited Airlines
Deal found 10/9£135
ג' 18/1108:00ORD - SEA
Nonstop4h 44mAlaska Airlines
ו' 21/1100:25SEA - ORD
Nonstop4h 03mAlaska Airlines
Deal found 11/9£136
ד' 1/1006:20ORD - SEA
Nonstop4h 32mAlaska Airlines
א' 2/1119:40SEA - ORD
1 stop7h 21mAlaska Airlines
Deal found 10/9£137
ד' 22/1012:40ORD - SEA
2 stops12h 20mSouthwest
ש' 25/1005:00SEA - ORD
1 stop6h 05mSouthwest
Deal found 10/9£137
ד' 22/1012:40ORD - SEA
2 stops12h 20mSouthwest
ד' 29/1005:50SEA - ORD
1 stop8h 55mSouthwest
Deal found 11/9£138

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 12 ספטמבר 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

ו' 17/10

06:00-08:27

Nonstop4h 27m

Seattle/Tacoma Intl

א' 19/10

00:17-06:24

Nonstop4h 07m

£134

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

א' 9/11

06:00-08:40

Nonstop4h 40m

Seattle/Tacoma Intl

ד' 12/11

05:20-13:09

1 stop5h 49m

£139

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

ו' 3/10

13:01-15:35

Nonstop4h 34m

Seattle/Tacoma Intl

ש' 4/10

00:17-06:24

Nonstop4h 07m

£141

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

ה' 20/11

06:00-08:40

Nonstop4h 40m

Seattle/Tacoma Intl

ג' 25/11

06:00-12:03

Nonstop4h 03m

£142

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

ד' 24/12

09:15-12:03

Nonstop4h 48m

Seattle/Tacoma Intl

ו' 2/1

10:52-17:01

Nonstop4h 09m

£143

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

ד' 19/11

08:00-10:44

Nonstop4h 44m

Seattle/Tacoma Intl

א' 23/11

13:44-23:32

1 stop7h 48m

£146

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

ש' 27/9

16:10-18:49

Nonstop4h 39m

Seattle/Tacoma Intl

ב' 6/10

10:50-17:05

Nonstop4h 15m

£150

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

ו' 17/10

07:00-14:35

1 stop9h 35m

Seattle/Tacoma Intl

ג' 21/10

00:17-06:24

Nonstop4h 07m

£150

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

ה' 25/9

07:10-09:45

Nonstop4h 35m

Seattle/Tacoma Intl

ג' 30/9

07:10-13:20

Nonstop4h 10m

£154

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

ג' 10/3

14:20-17:00

Nonstop4h 40m

Seattle/Tacoma Intl

ד' 11/3

17:45-23:44

Nonstop3h 59m

£154

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Showing 1-10 of 22 results
1
2
3

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 29 August 2025.

The best time to book flights from Chicago O'Hare Intl Airport to Seattle is 84 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 12 ספטמבר 2025.

A simple way to save on the total cost of your ticket is to fly from Chicago O'Hare Intl Airport to Seattle at midday. If you’re flexible enough to do this you can expect to save up to 38% on your trip compared to booking a flight in the morning.

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 45 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 £134, Hawaiian Airlines can have you in Seattle from Chicago O'Hare Intl Airport in 4h 27m. 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: Delta (87%), Air France (87%), KLM( 83%).

  • 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell
SeaTac

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.