
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $87 (Cheapflightsfares) |
One-way from | $42 (Kiwi.com) |
Popular in | November |
Cheapest in | August |
Average price | $225 |
Good round-trip deal | $263 or less |
Good one-way deal | $145 or less |
Fly from
Fly to
Route
Depart
Return
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Tue 3/31
5:45 pm-8:54 pm
Nonstop2h 09m
Lambert-St Louis
Tue 4/7
8:54 am-10:27 am
Nonstop2h 33m
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Sat 4/18
5:45 pm-8:54 pm
Nonstop2h 09m
Lambert-St Louis
Sat 4/25
8:54 am-10:27 am
Nonstop2h 33m
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Sat 4/11
6:30 am-9:50 am
Nonstop2h 20m
Chicago Midway
Mon 4/13
6:00 am-7:40 am
Nonstop2h 40m
DenverChicago
DEN - ORD
DENORD
Denver Intl
Wed 6/3
4:20 pm-8:05 pm
Nonstop2h 45m
Chicago O'Hare Intl
Mon 6/8
5:00 am-6:42 am
Nonstop2h 42m
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Wed 6/3
11:45 am-4:40 pm
1 stop3h 55m
Chicago Midway
Mon 6/8
5:15 am-6:50 am
Nonstop2h 35m
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Tue 4/21
8:40 am-1:00 pm
1 stop3h 20m
Lambert-St Louis
Tue 4/28
3:55 pm-5:20 pm
Nonstop2h 25m
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Fri 4/17
5:35 pm-9:05 pm
Nonstop2h 30m
Chicago Midway
Sun 4/19
6:55 am-12:30 pm
2 stops6h 35m
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Thu 5/7
8:20 pm-11:40 pm
Nonstop2h 20m
Chicago Midway
Sun 5/10
6:00 am-7:40 am
Nonstop2h 40m
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Sat 4/11
6:30 am-9:50 am
Nonstop2h 20m
Chicago Midway
Sun 4/19
6:00 am-7:40 am
Nonstop2h 40m
DenverChicago
DEN - ORD
DENORD
Denver Intl
Fri 4/10
12:35 am-9:10 am
1 stop7h 35m
Chicago O'Hare Intl
Mon 4/13
11:00 am-5:21 pm
1 stop7h 21m
Currently, July is the cheapest month in which you can book a flight from Denver to Illinois (average of $46). Flying from Denver to Illinois in June is currently the most expensive (average of $110). 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.
It’s optimal to fly from Denver to Illinois in the morning. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight at noon.
Travelers seeking maximum savings on their Denver to Illinois flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Anonymous,Mar 2026
KOA - HNL
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Anonymous,Mar 2026
KOA - HNL
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Anonymous,Mar 2026
KOA - HNL
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Anonymous,Mar 2026
KOA - HNL
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Anonymous,Mar 2026
KOA - HNL
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Anonymous,Mar 2026
KOA - HNL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$57 | Average$141 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$70 | Average$184 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$126 | Average$191 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$155 | Average$265 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$157 | Average$408 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$159 | Average$358 | FlexibilityNo cancel fee | On-time69% |