What's the average Seattle to Illinois flight price?

We looked at all of the upcoming return flights from Seattle to Illinois we could find over the next 12 months. It looks like £114 is the best price. This is good, compared to the average Illinois ticket price of £300.

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

The cheapest month to fly from Seattle to Chicago O'Hare International Airport is usually November . The cheapest month to fly from Seattle to Moline Airport is usually July . The cheapest month to fly from Seattle to Quincy Airport is usually June . And the cheapest month to fly from Seattle to Central Illinois Regional Airport is usually July .

Which upcoming date is cheapest to fly from Seattle to Illinois on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Illinois on Saturday, 2 November 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 into?

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 tickets from Seattle to Illinois, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.

Chicago.£114 per passenger.Departing Sat, 2 Nov, returning Sat, 9 Nov.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Sat, 2 Nov, arriving in Chicago O'Hare International.Inbound direct flight with Alaska Airlines departs from Chicago O'Hare International on Sat, 9 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £114, select.

Decatur.£334 per passenger.Departing Tue, 2 Jul, returning Mon, 8 Jul.Return flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Tue, 2 Jul, arriving in Decatur.Inbound indirect flight with United, departs from Decatur on Mon, 8 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £334, select.

Springfield.£343 per passenger.Departing Tue, 11 Jun, returning Thu, 20 Jun.Return flight with American Airlines.Outbound indirect flight with American Airlines, departs from Seattle / Tacoma International on Tue, 11 Jun, arriving in Springfield.Inbound indirect flight with American Airlines, departs from Springfield on Thu, 20 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £343, select.

Moline.£391 per passenger.Departing Wed, 3 Jul, returning Tue, 9 Jul.Return flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Wed, 3 Jul, arriving in Moline.Inbound indirect flight with United, departs from Moline on Tue, 9 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £391, select.

Quincy.£418 per passenger.Departing Tue, 11 Jun, returning Thu, 20 Jun.Return flight with Spirit Airlines and Southern Airways Express.Outbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Tue, 11 Jun, arriving in Quincy.Inbound indirect flight with Southern Airways Express, departs from Quincy on Thu, 20 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £418, select.

Peoria.£435 per passenger.Departing Fri, 5 Jul, returning Tue, 9 Jul.Return flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Fri, 5 Jul, arriving in Greater Peoria.Inbound indirect flight with United, departs from Greater Peoria on Tue, 9 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £435, select.

Marion.£441 per passenger.Departing Wed, 12 Jun, returning Wed, 26 Jun.Return flight with Alaska Airlines and Contour Airlines.Outbound indirect flight with Alaska Airlines, departs from Seattle / Tacoma International on Wed, 12 Jun, arriving in Marion.Inbound indirect flight with Contour Airlines, departs from Marion on Wed, 26 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £441, select.

Bloomington.£563 per passenger.Departing Mon, 1 Jul, returning Sun, 7 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Mon, 1 Jul, arriving in Central Illinois Regional.Inbound indirect flight with Frontier Airlines, departs from Central Illinois Regional on Sun, 7 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £563, select.

Flying from Seattle to Illinois

Arm yourself with these facts on the fly.

Cheapest flight found	£114, Chicago
Cheapest month to fly	November
Average flight time	4 hrs, 1 min
Cheapest airport to fly from	Seattle / Tacoma International
Most popular airline	Qatar Airways

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 travellers recently found return flights from £114 and one-way tickets from £53 one-way. 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 September

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

Fly on a Saturday

From our data, we can see that Saturday 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 fares rise and fall

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 flight 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 return flights from Seattle to Illinois we could find over the next 12 months. It looks like £114 is the best price. This is good, compared to the average Illinois ticket price of £300.
: The cheapest month to fly from Seattle to Chicago O'Hare International Airport is usually November. The cheapest month to fly from Seattle to Moline Airport is usually July. The cheapest month to fly from Seattle to Quincy Airport is usually June. And the cheapest month to fly from Seattle to Central Illinois Regional Airport is usually July.
: After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Illinois on Saturday, 2 November 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.