$1,138 Cheap Flights from Chicago (ORD) to Seattle (BFI)

View $1,138 flight on Tue, May 26, 2026Opens in a new window

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Seattle, WA (BFI-Boeing Field)

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Cheap Flights from Chicago to Seattle (ORD-BFI)

Prices were available within the past 7 days and start at $1,138 for one-way flights and $3,201 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, May 16 - Sun, May 17
ORD
Chicago
BFI
Seattle
$3,201 Roundtrip, found 5 days ago
$3,201
Roundtrip
found 5 days ago
Select United flight, departing Sat, May 16 from Chicago to Seattle, returning Sun, May 17, priced at $3,201 found 5 days ago
United
Sat, May 16 - Sun, May 17
ORD
Chicago
BFI
Seattle
$3,610 Roundtrip, found 5 days ago
$3,610
Roundtrip
found 5 days ago
Select United flight, departing Sat, May 16 from Chicago to Seattle, returning Sun, May 17, priced at $3,610 found 5 days ago

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Snohomish County - Paine Field PAE. Cheapest option available. Average driving time to city center is 29 minutes. Flights from $431
PAE
Snohomish County - Paine Field
Cheapest
Average driving time to city center29 min
Flights from $431

Frequently asked questions

How much does a flight from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field) cost?
You can find cheap one-way flights from $1,138 and cheap return flights from $3,201 ORD to BFI with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when ORD to BFI ticket fares go up or down.
What is the cheapest month to fly from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field)?
The cheapest month to fly from ORD to BFI is May when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field)?
Enter ORD to BFI and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field)?
Alaska Airlines is the airline that flies from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field). Use Expedia's flight search tool to compare airlines on this route and find our cheapest option for your trip. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field)?
To find a cheap flight from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from ORD to BFI. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
Can you fly business or first class from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field)?
Select the "Business class" and "First class" filters when looking for ORD to BFI flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field) flight with Expedia?
It's easy to earn miles on a Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle from O'Hare Intl. (ORD)?
From O'Hare Intl. (ORD), you can fly into Seattle - Tacoma Intl. (SEA) to reach Seattle. Some flights may connect through major hubs like Love Field (DAL), Los Angeles Intl. (LAX), Harry Reid Intl. (LAS) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field) at the last minute?
Typically, booking a last minute flight from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field) flight and hotel package?
Securing a Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field) Seattle Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field)?
If you booked your Chicago, IL (ORD-O'Hare Intl.) to Seattle, WA (BFI-Boeing Field) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
O'Hare Intl.
Destination airport
Boeing Field
Roundtrip price
$3,200
Distance
1715 mi

*Flight schedules are subject to change.

*Available to One Key members.

 

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