Users have found that booking a flight from Denver to Illinois at least 56 days early can save you up to 83% on average compared to booking a flight this week. If booking 56 days before your flight isn’t an option for you, users have found flights from Denver to Illinois for as little as $156 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $291 for flights departing within the next 3 days.
Due to multiple factors, expect to potentially pay more when booking in June. For low rates, April can be a great choice for travel to Illinois. Flights to Illinois from Denver in April are about $187 on average during April, but can be found for as low as $40.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Illinois as you normally would.
Fly from
Fly to
Budget
$55 - $152
Route
Depart
Return
Price
Denver IntlLambert-St Louis
DEN - STL
DENSTL
Denver Intl
Sat 6/8
Nonstop2h 09m
Lambert-St Louis
Tue 6/11
Nonstop2h 29m
Denver IntlChicago O'Hare Intl
DEN - ORD
DENORD
Denver Intl
Tue 6/11
Nonstop2h 30m
Chicago O'Hare Intl
Sat 6/15
Nonstop2h 54m
Denver IntlChicago O'Hare Intl
DEN - ORD
DENORD
Denver Intl
Sat 6/1
Nonstop2h 28m
Chicago O'Hare Intl
Wed 6/5
Nonstop2h 57m
Denver IntlChicago Midway
DEN - MDW
DENMDW
Denver Intl
Wed 6/12
Nonstop2h 22m
Chicago Midway
Wed 6/19
Nonstop2h 46m
Denver IntlChicago O'Hare Intl
DEN - ORD
DENORD
Denver Intl
Wed 10/9
Nonstop2h 36m
Chicago O'Hare Intl
Tue 10/15
Nonstop2h 45m
Denver IntlChicago Midway
DEN - MDW
DENMDW
Denver Intl
Wed 6/5
Nonstop2h 22m
Chicago Midway
Wed 6/12
Nonstop2h 46m
Denver IntlChicago O'Hare Intl
DEN - ORD
DENORD
Denver Intl
Sat 6/15
Nonstop2h 35m
Chicago O'Hare Intl
Fri 6/21
1 stop15h 12m
Denver IntlGreater Peoria
DEN - PIA
DENPIA
Denver Intl
Fri 5/31
Nonstop2h 02m
Greater Peoria
Mon 6/3
Nonstop2h 27m
Denver IntlChicago O'Hare Intl
DEN - ORD
DENORD
Denver Intl
Thu 6/13
1 stop16h 13m
Chicago O'Hare Intl
Mon 6/17
1 stop16h 19m
No data available for this route at this time. Please check back soon.
Crew
Food
Overall
Boarding
Comfort
Entertainment
Reviews
Paid a lot for our exit row seats and they weren’t that roomy.
Crew
Food
Overall
Boarding
Comfort
Entertainment
Reviews
Paid a lot for our exit row seats and they weren’t that roomy.
Crew
Food
Overall
Boarding
Comfort
Entertainment
Reviews
Paid a lot for our exit row seats and they weren’t that roomy.
Crew
Food
Overall
Boarding
Comfort
Entertainment
Reviews
Paid a lot for our exit row seats and they weren’t that roomy.
Crew
Food
Overall
Boarding
Comfort
Entertainment
Reviews
Paid a lot for our exit row seats and they weren’t that roomy.
Crew
Food
Overall
Boarding
Comfort
Entertainment
Reviews
Paid a lot for our exit row seats and they weren’t that roomy.
11%of flight departures | Early morningMidnight to 6 am |
---|---|
37%of flight departures | Morning6 am to noon |
37%of flight departures | AfternoonNoon to 6 pm |
15%of flight departures | Evening6 pm to midnight |
Cheapflights makes it easy to find Denver to Illinois flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Illinois from Denver.
Need flexible booking options for your flight to Illinois from Denver? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Not ready to book yet? You can track prices for flights from Denver to Illinois on Cheapflights with our Price Alert feature and get notified when better prices are available.