$36 Cheap Flights from Chicago to Seattle (CHI to SEA)

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Cheap flight deals from Chicago to Seattle Starting at $36

Whether you’re going for a one-way or round-trip to Seattle, we’ve got you covered! Check out these different flight options from Chicago below.

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to fly from Chicago to Seattle?

These price trend charts carefully monitor and predict how flight prices from Chicago to Seattle will change. Keep a close eye on them to understand when the best time to buy your tickets is.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Find cheap airlines flights from Chicago to Seattle

Compare prices from various providers below to understand which option best suits your travel needs, before enjoying a comfortable journey with a trusted airline from Chicago to Seattle.

American Airlines

From $41

Frontier Airlines

From $49

Spirit Airlines

From $67

Delta Air Lines

From $83

Sun Country Airlines

From $112

Southwest Airlines

From $126

Alaska Airlines

From $165

United Airlines

From $264

Find more flights and airlines

Alternative Cheap Routes from Chicago to Seattle

Did you know that you can save money and time on an alternative route from Chicago to Seattle? Check out some of the different available routes below.

Cheapest
MDW
22:27
16h 43m
1 transfer
SEA
13:10
Midway International Airport - Seattle-Tacoma International Airport
Wed, Jan 1Frontier Airlines
$49
ORD
07:00
7h 50m
1 transfer
SEA
12:50
O'Hare International Airport - Seattle-Tacoma International Airport
Wed, Jan 1Alaska Airlines
$165
ORD
07:00
7h 50m
1 transfer
SEA
12:50
O'Hare International Airport - Seattle-Tacoma International Airport
Wed, Jan 1Alaska Airlines
$165
Find More Flights

Frequently Asked Questions

When are flight tickets from Chicago (CHI) to Seattle (SEA) the cheapest?
Airlines adjust prices for flights from Chicago to Seattle based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much do flights from Chicago (CHI) to Seattle (SEA) cost?
According to Trip.com's data, the lowest price is around $211.
How long does it take to fly from Chicago (CHI) to Seattle (SEA) and what is the distance?
It takes around 4 hours 44 minutes to fly from Chicago (CHI) to Seattle (SEA).
What is the transportation method from the main airport to downtown in Seattle?
- The distance from Seattle-Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
- The distance from Lake Union Sea Plane Base to downtown is about 2 km. It takes about 20 minutes by taxi.
What are the most popular airlines that fly from Chicago (CHI) to Seattle (SEA)?
Airlines with flights from Chicago (CHI) to Seattle (SEA): Qatar Airways, Alaska Airlines, American Airlines, United Airlines, Air Tahiti Nui, Iberia, Southwest Airlines, Scandinavian Airlines, avianca, Gulf Air and Hawaiian Airlines.

How to find a cheap flight from Chicago to Seattle

Understanding the common pitfalls when booking your flight tickets can help you save massively when it comes time to fly. We’ve listed our six essential steps to keep in mind when you’re booking flight tickets to help you find the best price.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

Check airline and travel agency websites for latest flight deals

Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

Use the Trip.com App

Save up to £10 per person when booking your flights on Trip.com

Flight Info | Chicago to Seattle

Cheapest nonstop flight price	$35
Cheapest round-trip ticket price	$82
Off-season for travel	November
Peak season for travel	August
Flight distance	2,785.86 km
Average flight time	4 hours 44 minutes
Popular airline	American Airlines