
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $110 (Frontier) |
One-way from | $49 (Southwest) |
Popular in | November |
Cheapest in | August |
Average price | $327 |
Good round-trip deal | $282 or less |
Good one-way deal | $161 or less |
Fly from
Fly to
Route
Depart
Return
Price
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Thu 1/8
9:20 pm-7:50 am
1 stop11h 30m
Lambert-St Louis
Mon 1/12
8:45 am-8:10 pm
1 stop10h 25m
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Thu 1/1
8:25 am-9:40 am
Nonstop1h 15m
Lambert-St Louis
Mon 1/5
2:30 pm-3:40 pm
Nonstop1h 10m
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Wed 12/24
5:59 pm-10:16 pm
1 stop4h 17m
Lambert-St Louis
Thu 12/25
6:05 am-11:06 am
1 stop5h 01m
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Wed 12/24
4:01 pm-10:16 pm
1 stop6h 15m
Lambert-St Louis
Thu 12/25
6:29 am-12:54 pm
1 stop6h 25m
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Wed 12/10
2:49 pm-11:07 am
1 stop20h 18m
Lambert-St Louis
Sat 12/13
7:43 pm-11:08 am
1 stop15h 25m
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Wed 12/3
4:01 pm-11:07 am
1 stop19h 06m
Lambert-St Louis
Mon 12/8
10:47 am-3:12 pm
1 stop28h 25m
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Fri 1/23
1:22 pm-6:51 am
1 stop18h 29m
Lambert-St Louis
Sat 1/24
12:06 pm-10:20 pm
1 stop9h 14m
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Tue 12/9
10:00 am-10:33 pm
2 stops12h 33m
Lambert-St Louis
Fri 12/12
10:42 am-10:24 pm
1 stop11h 42m
IndianapolisChicago
IND - ORD
INDORD
Indianapolis
Thu 1/8
10:38 am-8:05 pm
1 stop10h 27m
Chicago O'Hare Intl
Mon 1/12
4:38 pm-12:18 am
1 stop6h 40m
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Mon 12/8
11:57 am-10:33 pm
1 stop11h 36m
Lambert-St Louis
Wed 12/10
7:43 pm-1:13 pm
1 stop16h 30m
Currently, August is the cheapest month in which you can book a flight from Indiana to Illinois (average of $135). Flying from Indiana to Illinois in April is currently the most expensive (average of $191). 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.
Unlike in the evening, when flights are generally more expensive, you can save up to 20% on flights from Indiana to Illinois by exploring options for tickets in the morning.
Travelers seeking maximum savings on their Indiana to Illinois flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from USIN to USIL are scheduled on a Monday (60 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (23 on average).
Comfort
Entertainment
Overall
Food
Boarding
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Comfort
Entertainment
Overall
Food
Boarding
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Comfort
Entertainment
Overall
Food
Boarding
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Comfort
Entertainment
Overall
Food
Boarding
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Comfort
Entertainment
Overall
Food
Boarding
Crew
Reviews
Mike,Aug 2025
OKC - AUS
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$141 | Average$301 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$160 | Average$274 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$189 | Average$302 | FlexibilityNo cancel fee | On-timeN/A |