£64 Cheap Flights from Chicago (ORD) to Seattle (SEA)

View £64 flight on Tue, 3 Jun 2025Opens in a new window

Popular airlines from Chicago O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Chicago (ORD) to Seattle (SEA)

Prices were available within the past 7 days and start at £64 for one-way flights and £127 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, 3 Jun - Wed, 11 Jun
ORD
Chicago
SEA
Seattle
£127 Return, found 15 hours ago
£127
Return
found 15 hours ago
Select American Airlines flight, departing Tue, 3 Jun from Chicago to Seattle, returning Wed, 11 Jun, priced at £127 found 15 hours ago
Alaska Airlines
Sat, 17 May - Sat, 24 May
ORD
Chicago
SEA
Seattle
£127 Return, found 12 hours ago
£127
Return
found 12 hours ago
Select Alaska Airlines flight, departing Sat, 17 May from Chicago to Seattle, returning Sat, 24 May, priced at £127 found 12 hours ago
Hawaiian Airlines
Tue, 15 Jul - Tue, 22 Jul
ORD
Chicago
SEA
Seattle
£127 Return, found 12 hours ago
£127
Return
found 12 hours ago
Select Hawaiian Airlines flight, departing Tue, 15 Jul from Chicago to Seattle, returning Tue, 22 Jul, priced at £127 found 12 hours ago
Alaska Airlines
Sat, 31 May - Sat, 7 Jun
ORD
Chicago
SEA
Seattle
£128 Return, found 2 days ago
£128
Return
found 2 days ago
Select Alaska Airlines flight, departing Sat, 31 May from Chicago to Seattle, returning Sat, 7 Jun, priced at £128 found 2 days ago
Delta
Sat, 12 Jul - Tue, 29 Jul
ORD
Chicago
SEA
Seattle
£149 Return, found 12 hours ago
£149
Return
found 12 hours ago
Select Delta flight, departing Sat, 12 Jul from Chicago to Seattle, returning Tue, 29 Jul, priced at £149 found 12 hours ago
Alaska Airlines
Sat, 17 May - Mon, 19 May
ORD
Chicago
SEA
Seattle
£150 Return, found 4 days ago
£150
Return
found 4 days ago
Select Alaska Airlines flight, departing Sat, 17 May from Chicago to Seattle, returning Mon, 19 May, priced at £150 found 4 days ago
American Airlines
Tue, 3 Jun - Wed, 11 Jun
ORD
Chicago
SEA
Seattle
£152 Return, found 15 hours ago
£152
Return
found 15 hours ago
Select American Airlines flight, departing Tue, 3 Jun from Chicago to Seattle, returning Wed, 11 Jun, priced at £152 found 15 hours ago
Alaska Airlines
Fri, 30 May - Sun, 1 Jun
ORD
Chicago
SEA
Seattle
£154 Return, found 2 days ago
£154
Return
found 2 days ago
Select Alaska Airlines flight, departing Fri, 30 May from Chicago to Seattle, returning Sun, 1 Jun, priced at £154 found 2 days ago
Alaska Airlines
Fri, 30 May - Mon, 2 Jun
ORD
Chicago
SEA
Seattle
£155 Return, found 2 days ago
£155
Return
found 2 days ago
Select Alaska Airlines flight, departing Fri, 30 May from Chicago to Seattle, returning Mon, 2 Jun, priced at £155 found 2 days ago
United
Tue, 3 Jun - Wed, 11 Jun
ORD
Chicago
SEA
Seattle
£160 Return, found 15 hours ago
£160
Return
found 15 hours ago
Select United flight, departing Tue, 3 Jun from Chicago to Seattle, returning Wed, 11 Jun, priced at £160 found 15 hours ago
Flight from Chicago to Seattle route information
Origin airport
O'Hare Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, JetBlue Airways, United
Return price
£126
Distance
2745 km

Compare flights from Chicago to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Chicago to Seattle. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from O'Hare Intl. to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from O'Hare Intl. (ORD) to Seattle - Tacoma Intl. (SEA) 

The easiest way to view the best deals on flights from Chicago to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from O'Hare Intl. to Seattle - Tacoma Intl. start at just £127 and range up to £160.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Chicago and Seattle
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Chicago to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from O'Hare Intl. to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from O'Hare Intl. Airport (ORD) to Sea-Tac Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price quoted for a round-trip journey between O’Hare Airport and SEA was £127. Fares this good don’t last forever, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from O'Hare Airport to SEA?
We understand that life can throw the odd curveball, so we’ve made it as easy as possible for you to cancel your flight online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from ORD to Seattle - Tacoma Intl. Airport (SEA) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for O’Hare Airport to Seattle - Tacoma Intl. Airport (SEA) flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from O'Hare Intl. Airport (ORD) to Sea-Tac Airport?
The flying distance from ORD to Seattle - Tacoma Intl. Airport (SEA) is 2,800 kilometres. Close your eyes or read a good book and the journey will zip by.
Which airlines fly direct from ORD to Seattle - Tacoma Intl. Airport (SEA)?
It’s a breeze to fly directly from O’Hare Intl. Airport (ORD) to Seattle - Tacoma Intl. Airport (SEA). These are the top carriers that operate nonstop services on this route:

  • Alaska Airlines - (AS) with 134 monthly flights
  • United Airlines - (UA) with 117 monthly flights
  • Delta Air Lines - (DL) with 69 monthly flights
  • American Airlines - (AA) with 60 monthly flights

Are O'Hare Airport to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Late planners can occasionally find a bargain, with some of the cheapest airfares from O’Hare Airport to Sea-Tac Airport showing up a few weeks before the departure date. If you’d rather book ahead of time, Expedia compares and updates all the best flight deals continually — as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines advertise prices that far in advance.

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