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Flights from Denver International Airport to Illinois

Flight deals from Denver International Airport to Illinois

Looking for cheap tickets from Denver International Airport to Illinois, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.
Chicago.£61 per passenger.Departing Mon, 15 Sep, returning Tue, 16 Sep.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Mon, 15 Sep, arriving in Chicago O'Hare International.Inbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Tue, 16 Sep, arriving in Denver International.Price includes taxes and charges.From £61, select.
Peoria.£87 per passenger.Departing Fri, 3 Oct, returning Fri, 17 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Denver International on Fri, 3 Oct, arriving in Greater Peoria.Inbound direct flight with Allegiant Air departs from Greater Peoria on Fri, 17 Oct, arriving in Denver International.Price includes taxes and charges.From £87, select.
Moline.£161 per passenger.Departing Thu, 2 Oct, returning Mon, 6 Oct.Return flight with United.Outbound indirect flight with United, departs from Denver International on Thu, 2 Oct, arriving in Moline.Inbound indirect flight with United, departs from Moline on Mon, 6 Oct, arriving in Denver International.Price includes taxes and charges.From £161, select.
Marion.£191 per passenger.Departing Thu, 11 Sep, returning Mon, 15 Sep.Return flight with Frontier Airlines and Contour Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Thu, 11 Sep, arriving in Marion.Inbound indirect flight with Contour Airlines, departs from Marion on Mon, 15 Sep, arriving in Denver International.Price includes taxes and charges.From £191, select.
Bloomington.£251 per passenger.Departing Thu, 2 Oct, returning Mon, 6 Oct.Return flight with Frontier Airlines and Allegiant Air.Outbound indirect flight with Frontier Airlines, departs from Denver International on Thu, 2 Oct, arriving in Central Illinois Regional.Inbound indirect flight with Allegiant Air, departs from Central Illinois Regional on Mon, 6 Oct, arriving in Denver International.Price includes taxes and charges.From £251, select.

Flying from Denver International Airport to Illinois

Arm yourself with these facts on the fly.
Cheapest flight found£61, Chicago
Cheapest month to flySeptember
Average flight time2 hrs, 19 mins
Average flights per week506
Most popular airlineSouthwest Airlines

Frequently asked questions

Yes - direct flights currently operate from Denver International Airport to Chicago O'Hare International Airport and Greater Peoria Airport in Illinois.
We looked at all of the upcoming return flights from Denver International Airport to Illinois we could find over the next 12 months. It looks like £61 is the best price. This is good, compared to the average Illinois ticket price of £150.
The cheapest month to fly from Denver International Airport to Central Illinois Regional Airport is currently October.
The cheapest month to fly from Denver International Airport to Greater Peoria Airport is currently October.
The cheapest month to fly from Denver International Airport to Moline Airport is currently October.
And the cheapest month to fly from Denver International Airport to Marion Airport is usually September.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Denver International Airport to Illinois on Monday, 15 September 2025.
If you're flying from Denver International, 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 Denver International Airport and Illinois is 2 hours and 19 minutes.