What's the average Seattle to Illinois flight price?

We looked at all of the upcoming round-trip flights from Seattle to Illinois we could find over the next 12 months. It looks like C$193 is the best price. This is good, compared to the average Illinois ticket price of C$496.

What is the cheapest month to fly from Seattle to Illinois?

The cheapest month to fly from Seattle to Quincy Airport is usually July . The cheapest month to fly from Seattle to Moline Airport is usually September . The cheapest month to fly from Seattle to Greater Peoria Airport is usually July . And the cheapest month to fly from Seattle to Marion Airport is usually June .

On which upcoming date is it cheapest to fly from Seattle to Illinois?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Illinois on Saturday, September 21, 2024 .

Are there any direct flights from Seattle to Illinois?

Seattle / Tacoma International Airport offers direct flights to Illinois.

If I'm flying from Seattle, where in Illinois is cheapest to fly to?

If you're flying from Seattle, the cheapest city in Illinois to fly into is Chicago. The cheapest airport serving Chicago at the moment is Chicago O'Hare International.

How long is the flight from Seattle to Illinois?

The average flight time between Seattle and Illinois is 4 hours.

Flights from Seattle to Illinois

Flight deals from Seattle to Illinois

Looking for cheap flights from Seattle to Illinois, or a last-minute trip? Find the lowest prices on one-way and round-trip flights right here.

Chicago.C$193 per passenger.Departing Sat, Sep 21, returning Wed, Sep 25.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from Seattle / Tacoma International on Sat, Sep 21, arriving in Chicago O'Hare International.Inbound direct flight with Alaska Airlines departing from Chicago O'Hare International on Wed, Sep 25, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$193, select.

Decatur.C$477 per passenger.Departing Sat, Jul 13, returning Sun, Jul 14.Round-trip flight with United.Outbound indirect flight with United, departing from Seattle / Tacoma International on Sat, Jul 13, arriving in Decatur.Inbound indirect flight with United, departing from Decatur on Sun, Jul 14, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$477, select.

Moline.C$614 per passenger.Departing Tue, Sep 17, returning Tue, Sep 24.Round-trip flight with United.Outbound indirect flight with United, departing from Seattle / Tacoma International on Tue, Sep 17, arriving in Moline.Inbound indirect flight with United, departing from Moline on Tue, Sep 24, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$614, select.

Peoria.C$738 per passenger.Departing Fri, Jul 5, returning Tue, Jul 9.Round-trip flight with United.Outbound indirect flight with United, departing from Seattle / Tacoma International on Fri, Jul 5, arriving in Greater Peoria.Inbound indirect flight with United, departing from Greater Peoria on Tue, Jul 9, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$738, select.

Marion.C$772 per passenger.Departing Wed, Jun 12, returning Wed, Jun 26.Round-trip flight with Alaska Airlines and Contour Airlines.Outbound indirect flight with Alaska Airlines, departing from Seattle / Tacoma International on Wed, Jun 12, arriving in Marion.Inbound indirect flight with Contour Airlines, departing from Marion on Wed, Jun 26, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$772, select.

Quincy.C$811 per passenger.Departing Fri, Jul 5, returning Thu, Jul 11.Round-trip flight with Alaska Airlines and Southern Airways Express.Outbound indirect flight with Alaska Airlines, departing from Seattle / Tacoma International on Fri, Jul 5, arriving in Quincy.Inbound indirect flight with Southern Airways Express, departing from Quincy on Thu, Jul 11, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$811, select.

Bloomington.C$984 per passenger.Departing Fri, Jul 5, returning Thu, Jul 11.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Seattle / Tacoma International on Fri, Jul 5, arriving in Central Illinois Regional.Inbound indirect flight with Delta, departing from Central Illinois Regional on Thu, Jul 11, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$984, select.

Flying from Seattle to Illinois

Arm yourself with these facts on the fly.

Cheapest flight found	C$100, Chicago
Cheapest month to fly	July
Average flight time	4 hrs, 1 min
Cheapest airport to fly from	Seattle / Tacoma International
Most popular airline	United

How to find cheap flights from Seattle to Illinois

We've compared the best online travel agents and flight providers on the Internet to find the cheapest plane tickets from Seattle to Illinois. Other savvy travelers recently found round-trip flights from C$193 and one-way tickets from C$100. Ready to join them? Here are a few tips to help you do it the smart way.

Fly from Seattle / Tacoma International into Chicago

At the moment, the lowest-priced flight tickets to Illinois are from Seattle / Tacoma International Airport to Chicago O'Hare International Airport.

Fly in July

We crunched the flight calendar and found the cheapest time to fly from Seattle to Illinois is currently July.

Fly on a Tuesday

From our data, we can see that Tuesday seems to be the cheapest time to fly from Seattle to Illinois.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from Seattle to anywhere you choose in Illinois.

Watch as flight prices go up and down

With Price Alerts, we'll let you know when flight prices from Seattle to Illinois go up or down so you can book when the time is just right.

Relax – these are fee-free plane tickets

With us, there are no added fees – the Seattle to Illinois flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

: We looked at all of the upcoming round-trip flights from Seattle to Illinois we could find over the next 12 months. It looks like C$193 is the best price. This is good, compared to the average Illinois ticket price of C$496.
: The cheapest month to fly from Seattle to Quincy Airport is usually July. The cheapest month to fly from Seattle to Moline Airport is usually September. The cheapest month to fly from Seattle to Greater Peoria Airport is usually July. And the cheapest month to fly from Seattle to Marion Airport is usually June.
: After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Illinois on Saturday, September 21, 2024.
: Seattle / Tacoma International Airport offers direct flights to Illinois.
: If you're flying from Seattle, the cheapest city in Illinois to fly into is Chicago. The cheapest airport serving Chicago at the moment is Chicago O'Hare International.
: The average flight time between Seattle and Illinois is 4 hours.