Users have found that booking a flight from Denver to Illinois at least 56 days early can save you up to 85% 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 $155 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 $297 for flights departing within the next 3 days.
Due to multiple factors, expect to potentially pay more when booking in July. For low rates, April can be a great choice for travel to Illinois. Flights to Illinois from Denver in April are about $185 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
$62 - $193
Route
Depart
Return
Price
Denver IntlChicago Midway
DEN - MDW
DENMDW
Denver Intl
Tue 9/17
Nonstop2h 22m
Chicago Midway
Wed 9/25
Nonstop2h 43m
Denver IntlChicago Midway
DEN - MDW
DENMDW
Denver Intl
Sat 9/7
Nonstop2h 22m
Chicago Midway
Wed 9/11
Nonstop2h 43m
Denver IntlChicago O'Hare Intl
DEN - ORD
DENORD
Denver Intl
Wed 8/14
Nonstop2h 36m
Chicago O'Hare Intl
Mon 8/19
Nonstop2h 44m
Denver IntlLambert-St Louis
DEN - STL
DENSTL
Denver Intl
Sat 8/10
Nonstop2h 10m
Lambert-St Louis
Mon 8/12
Nonstop2h 22m
Denver IntlChicago O'Hare Intl
DEN - ORD
DENORD
Denver Intl
Thu 7/4
Nonstop2h 30m
Chicago O'Hare Intl
Wed 7/10
Nonstop2h 41m
Denver IntlChicago O'Hare Intl
DEN - ORD
DENORD
Denver Intl
Fri 8/16
1 stop8h 05m
Chicago O'Hare Intl
Mon 8/19
Nonstop2h 44m
Denver IntlChicago O'Hare Intl
DEN - ORD
DENORD
Denver Intl
Fri 8/30
Nonstop2h 27m
Chicago O'Hare Intl
Mon 9/2
Nonstop2h 38m
Denver IntlGreater Peoria
DEN - PIA
DENPIA
Denver Intl
Fri 8/2
Nonstop2h 00m
Greater Peoria
Mon 8/5
Nonstop2h 20m
Denver IntlLambert-St Louis
DEN - STL
DENSTL
Denver Intl
Tue 8/13
1 stop7h 20m
Lambert-St Louis
Wed 8/14
1 stop4h 47m
No data available for this route at this time. Please check back soon.
Crew
Comfort
Overall
Food
Entertainment
Boarding
Reviews
Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.
Crew
Comfort
Overall
Food
Entertainment
Boarding
Reviews
Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.
Crew
Comfort
Overall
Food
Entertainment
Boarding
Reviews
Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.
Crew
Comfort
Overall
Food
Entertainment
Boarding
Reviews
Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.
Crew
Comfort
Overall
Food
Entertainment
Boarding
Reviews
Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.
Crew
Comfort
Overall
Food
Entertainment
Boarding
Reviews
Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Frontier | Cheapest$34 | Average$133 | FlexibilityNo cancel fee | On-time62% |
Allegiant Air | Cheapest$85 | Average$162 | FlexibilityNo cancel fee | On-time88% |
Spirit Airlines | Cheapest$115 | Average$209 | FlexibilityNo cancel fee | On-time65% |
United Airlines | Cheapest$148 | Average$353 | FlexibilityNo cancel fee | On-time69% |
American Airlines | Cheapest$151 | Average$399 | FlexibilityNo cancel fee | On-time71% |
Delta | Cheapest$196 | Average$346 | FlexibilityNo cancel fee | On-timeN/A |
10%of flight departures | Early morningMidnight to 6 am |
---|---|
50%of flight departures | Morning6 am to noon |
30%of flight departures | AfternoonNoon to 6 pm |
10%of flight departures | Evening6 pm to midnight |