Fly from
Fly to
Route
Depart
Return
Price
DenverChicago
DEN - ORD
DENORD
Denver Intl
Fri 1/10
8:59 pm-12:35 am
Nonstop2h 36m
Chicago O'Hare Intl
Sun 1/12
7:25 am-9:26 am
Nonstop3h 01m
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Fri 1/10
8:55 pm-12:13 am
Nonstop2h 18m
Chicago Midway
Sun 1/12
7:15 am-9:05 am
Nonstop2h 50m
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Sat 12/7
5:05 am-8:13 am
Nonstop2h 08m
Lambert-St Louis
Mon 12/9
6:46 pm-8:22 pm
Nonstop2h 36m
DenverChicago
DEN - ORD
DENORD
Denver Intl
Wed 12/11
8:50 pm-12:22 am
Nonstop2h 32m
Chicago O'Hare Intl
Wed 12/18
7:10 am-9:00 am
Nonstop2h 50m
DenverChicago
DEN - ORD
DENORD
Denver Intl
Sat 12/14
6:20 am-10:00 am
Nonstop2h 40m
Chicago O'Hare Intl
Wed 12/18
7:00 am-8:45 am
Nonstop2h 45m
DenverChicago
DEN - ORD
DENORD
Denver Intl
Tue 12/24
12:33 pm-4:05 pm
Nonstop2h 32m
Chicago O'Hare Intl
Wed 1/8
8:42 am-10:34 am
Nonstop2h 52m
DenverChicago
DEN - ORD
DENORD
Denver Intl
Tue 12/3
8:55 pm-5:40 pm
1 stop19h 45m
Chicago O'Hare Intl
Tue 12/10
7:33 am-7:26 am
1 stop24h 53m
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Fri 2/14
7:47 am-2:36 pm
1 stop5h 49m
Lambert-St Louis
Tue 2/18
4:39 pm-6:15 pm
Nonstop2h 36m
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Sat 12/21
9:20 pm-12:35 am
Nonstop2h 15m
Chicago Midway
Tue 12/24
8:35 pm-10:20 pm
Nonstop2h 45m
DenverChicago
DEN - ORD
DENORD
Denver Intl
Wed 12/11
12:50 am-7:46 am
1 stop5h 56m
Chicago O'Hare Intl
Mon 12/16
5:20 pm-9:52 pm
1 stop5h 32m
Currently, September is the cheapest month in which you can book a flight from Colorado to Illinois (average of $232). Flying from Colorado to Illinois in June is currently the most expensive (average of $308). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Illinois as you normally would.
The most flights from USCO to USIL are scheduled on a Tuesday (47 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (27 on average).
In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.
If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).
Overall
Crew
Entertainment
Food
Comfort
Boarding
Reviews
Great service throughout our flight. Easy boarding with early bird check in
Overall
Crew
Entertainment
Food
Comfort
Boarding
Reviews
Great service throughout our flight. Easy boarding with early bird check in
Overall
Crew
Entertainment
Food
Comfort
Boarding
Reviews
Great service throughout our flight. Easy boarding with early bird check in
Overall
Crew
Entertainment
Food
Comfort
Boarding
Reviews
Great service throughout our flight. Easy boarding with early bird check in
Overall
Crew
Entertainment
Food
Comfort
Boarding
Reviews
Great service throughout our flight. Easy boarding with early bird check in
Overall
Crew
Entertainment
Food
Comfort
Boarding
Reviews
Great service throughout our flight. Easy boarding with early bird check in
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Frontier | Cheapest$38 | Average$141 | FlexibilityNo cancel fee | On-time62% |
Allegiant Air | Cheapest$84 | Average$165 | FlexibilityNo cancel fee | On-time88% |
American Airlines | Cheapest$139 | Average$464 | FlexibilityNo cancel fee | On-time71% |
Southwest | Cheapest$140 | Average$318 | FlexibilityNo cancel fee | On-time63% |
United Airlines | Cheapest$144 | Average$442 | FlexibilityNo cancel fee | On-time69% |
Delta | Cheapest$189 | Average$472 | FlexibilityNo cancel fee | On-timeN/A |