Flights from Chicago to Illinois

Flight deals from Chicago to Illinois

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

Marion.SAR 517 per passenger.Departing Fri, 31 Oct, returning Tue, 4 Nov.Return flight with Contour Airlines.Outbound direct flight with Contour Airlines departs from Chicago O'Hare International on Fri, 31 Oct, arriving in Marion.Inbound direct flight with Contour Airlines departs from Marion on Tue, 4 Nov, arriving in Chicago O'Hare International.Price includes taxes and charges.From SAR 517, select.

Decatur.SAR 555 per passenger.Departing Thu, 4 Dec, returning Mon, 8 Dec.Return flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Thu, 4 Dec, arriving in Decatur.Inbound direct flight with United departs from Decatur on Mon, 8 Dec, arriving in Chicago O'Hare International.Price includes taxes and charges.From SAR 555, select.

Quincy.SAR 573 per passenger.Departing Tue, 4 Nov, returning Wed, 5 Nov.Return flight with Contour Airlines.Outbound direct flight with Contour Airlines departs from Chicago O'Hare International on Tue, 4 Nov, arriving in Quincy.Inbound direct flight with Contour Airlines departs from Quincy on Wed, 5 Nov, arriving in Chicago O'Hare International.Price includes taxes and charges.From SAR 573, select.

Moline.SAR 674 per passenger.Departing Thu, 6 Nov, returning Sun, 9 Nov.Return flight with American Airlines.Outbound direct flight with American Airlines departs from Chicago O'Hare International on Thu, 6 Nov, arriving in Moline.Inbound direct flight with American Airlines departs from Moline on Sun, 9 Nov, arriving in Chicago O'Hare International.Price includes taxes and charges.From SAR 674, select.

Peoria.SAR 676 per passenger.Departing Fri, 14 Nov, returning Sun, 16 Nov.Return flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Fri, 14 Nov, arriving in Greater Peoria.Inbound direct flight with United departs from Greater Peoria on Sun, 16 Nov, arriving in Chicago O'Hare International.Price includes taxes and charges.From SAR 676, select.

Bloomington.SAR 978 per passenger.Departing Wed, 29 Oct, returning Sun, 2 Nov.Return flight with Frontier Airlines and Allegiant Air.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Wed, 29 Oct, arriving in Central Illinois Regional.Inbound indirect flight with Allegiant Air, departs from Central Illinois Regional on Sun, 2 Nov, arriving in Chicago Midway.Price includes taxes and charges.From SAR 978, select.

Springfield.SAR 1,553 per passenger.Departing Tue, 28 Oct, returning Sat, 1 Nov.Return flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departs from Chicago Rockford on Tue, 28 Oct, arriving in Springfield.Inbound indirect flight with Allegiant Air, departs from Springfield on Sat, 1 Nov, arriving in Chicago Rockford.Price includes taxes and charges.From SAR 1,553, select.

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Flying from Chicago to Illinois

Arm yourself with these facts on the fly.

Cheapest flight found	SAR 517
Cheapest month to fly	October
Average flight time	1 hr, 13 mins
Cheapest airport to fly from	Chicago O'Hare International
Most popular airline	American Airlines

How to find cheap flights from Chicago to Illinois

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from Chicago to Illinois. Other savvy travellers recently found return flights from SAR 517 and one-way tickets from SAR 217 one-way. Ready to join them? Here are a few tips to help you do it the smart way.

Fly from Chicago O'Hare International into Marion

At the moment, the lowest priced flight tickets to Illinois are from Chicago O'Hare International Airport to Marion Airport.

Fly in October

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

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 Chicago to anywhere you choose in Illinois.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from Chicago 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 Illinois to Illinois flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What's the average Chicago to Illinois flight price?

We looked at all of the upcoming return flights from Chicago to Illinois we could find over the next 12 months. It looks like SAR 517 is the best price. This is good, compared to the average Illinois ticket price of SAR 789.

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

The cheapest month to fly from Chicago to Quincy Airport is usually November. The cheapest month to fly from Chicago to Moline Airport is usually November. The cheapest month to fly from Chicago to Central Illinois Regional Airport is usually October. And the cheapest month to fly from Chicago to Springfield Airport is usually October.

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Illinois on Friday, 31 October 2025.