An Alaska Airlines plane taking off with a snow-capped mountain in the background.

RM649 Cheap Flights from Chicago (ORD) to Seattle (SEA)

View RM649 flight on Thu, 10 Sept 2026Opens in a new window

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

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Chicago to Seattle (ORD-SEA)

Prices were available within the past 7 days and start at RM649 for one-way flights and RM1,298 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 10 Sept - Wed, 16 Sept
ORD
Chicago
SEA
Seattle
RM1,298 Return, found 1 day ago
RM1,298
Return
found 1 day ago
Select Delta flight, departing Thu, 10 Sept from Chicago to Seattle, returning Wed, 16 Sept, priced at RM1,298 found 1 day ago
Delta
Fri, 25 Sept - Fri, 2 Oct
ORD
Chicago
SEA
Seattle
RM1,429 Return, found 1 day ago
RM1,429
Return
found 1 day ago
Select Delta flight, departing Fri, 25 Sept from Chicago to Seattle, returning Fri, 2 Oct, priced at RM1,429 found 1 day ago
United
Thu, 10 Sept - Wed, 16 Sept
ORD
Chicago
SEA
Seattle
RM1,504 Return, found 1 day ago
RM1,504
Return
found 1 day ago
Select United flight, departing Thu, 10 Sept from Chicago to Seattle, returning Wed, 16 Sept, priced at RM1,504 found 1 day ago
Delta
Thu, 10 Sept - Wed, 16 Sept
ORD
Chicago
SEA
Seattle
RM1,524 Return, found 1 day ago
RM1,524
Return
found 1 day ago
Select Delta flight, departing Thu, 10 Sept from Chicago to Seattle, returning Wed, 16 Sept, priced at RM1,524 found 1 day ago
Delta
Fri, 25 Sept - Fri, 2 Oct
ORD
Chicago
SEA
Seattle
RM1,527 Return, found 1 day ago
RM1,527
Return
found 1 day ago
Select Delta flight, departing Fri, 25 Sept from Chicago to Seattle, returning Fri, 2 Oct, priced at RM1,527 found 1 day ago
United
Thu, 10 Sept - Wed, 16 Sept
ORD
Chicago
SEA
Seattle
RM1,545 Return, found 1 day ago
RM1,545
Return
found 1 day ago
Select United flight, departing Thu, 10 Sept from Chicago to Seattle, returning Wed, 16 Sept, priced at RM1,545 found 1 day ago
Delta
Fri, 25 Sept - Fri, 2 Oct
ORD
Chicago
SEA
Seattle
RM1,634 Return, found 1 day ago
RM1,634
Return
found 1 day ago
Select Delta flight, departing Fri, 25 Sept from Chicago to Seattle, returning Fri, 2 Oct, priced at RM1,634 found 1 day ago
United
Fri, 25 Sept - Fri, 2 Oct
ORD
Chicago
SEA
Seattle
RM1,656 Return, found 1 day ago
RM1,656
Return
found 1 day ago
Select United flight, departing Fri, 25 Sept from Chicago to Seattle, returning Fri, 2 Oct, priced at RM1,656 found 1 day ago
United
Thu, 10 Sept - Wed, 16 Sept
ORD
Chicago
SEA
Seattle
RM1,667 Return, found 1 day ago
RM1,667
Return
found 1 day ago
Select United flight, departing Thu, 10 Sept from Chicago to Seattle, returning Wed, 16 Sept, priced at RM1,667 found 1 day ago
American Airlines
Thu, 10 Sept - Wed, 16 Sept
ORD
Chicago
SEA
Seattle
RM1,708 Return, found 1 day ago
RM1,708
Return
found 1 day ago
Select American Airlines flight, departing Thu, 10 Sept from Chicago to Seattle, returning Wed, 16 Sept, priced at RM1,708 found 1 day ago

Find the cheapest month to fly from Chicago (ORD) to Seattle (SEA)

September is typically the cheapest month to fly

From RM 965 - RM 1,184 per traveller.

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 RM1,298. 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.

Travel information

Origin airport
O'Hare Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
RM1,298
Distance
2745 km
Average flight time
2 hours 37 mins

Book with confidence

Perfect flights from Chicago to Seattle

Your Journey from Chicago to Seattle

Start your unforgettable journey with Expedia. Our broad selection of flights from Chicago to Seattle caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Delta, United, American Airlines. Our selection of flights from O'Hare Intl. to Seattle - Tacoma Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Chicago to Seattle Flights

Experience the joy of finding cheap flights from O'Hare Intl. to Seattle - Tacoma Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from RM649 and roundtrip prices from RM1,298*.
 

Pre-Flight Essentials

Ensure a smooth journey from Chicago to Seattle with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Seattle

Picture yourself stepping off the plane in Seattle and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Chicago to Seattle Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Chicago to Seattle.
 

Beyond the Flight – Exploring Seattle

With Expedia, your adventure extends beyond the flight. Explore Seattle at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Chicago to Seattle with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Chicago to Seattle with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Chicago to Seattle

Explore a world of travel with Expedia

*Available to Expedia members.