
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $160 (Kiwi.com) |
One-way from | $73 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $347 |
Good round-trip deal | $436 or less |
Good one-way deal | $154 or less |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
di 3/10
8:06 pm-9:03 pm
1 stop26h 57m
Ontario
di 3/17
6:15 am-9:49 am
1 stop25h 34m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
do 4/30
11:21 am-11:24 pm
2 stops14h 03m
Ontario
vr 5/1
12:59 am-7:12 pm
1 stop16h 13m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
ma 2/23
1:54 pm-11:59 pm
1 stop12h 05m
Ontario
wo 2/25
8:40 am-3:53 pm
1 stop5h 13m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
vr 3/20
8:12 pm-11:59 pm
1 stop5h 47m
Ontario
ma 3/23
11:17 am-11:19 am
1 stop22h 02m
ChicagoOntario
ORD - ONT
ORDONT
Chicago O'Hare Intl
za 3/7
7:00 am-3:08 pm
1 stop10h 08m
Ontario
za 3/14
12:02 pm-11:56 pm
1 stop9h 54m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
di 3/17
7:15 am-12:23 pm
1 stop7h 08m
Ontario
wo 3/18
5:09 pm-12:21 am
1 stop5h 12m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
di 3/17
6:00 am-11:47 am
1 stop7h 47m
Ontario
di 3/17
5:09 pm-12:21 am
1 stop5h 12m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
za 3/7
7:00 am-12:07 pm
1 stop7h 07m
Ontario
za 3/14
1:20 pm-9:31 pm
1 stop6h 11m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
wo 3/11
6:00 am-11:47 am
1 stop7h 47m
Ontario
di 3/17
6:00 am-1:31 pm
1 stop5h 31m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
za 3/7
7:00 am-12:07 pm
1 stop7h 07m
Ontario
wo 3/18
5:09 pm-12:21 am
1 stop5h 12m
Currently, September is the cheapest month in which you can book a flight from Illinois to Ontario (average of $80). Flying from Illinois to Ontario in January is currently the most expensive (average of $159). 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 typically best to fly out from Illinois to Ontario at noon. Doing so could potentially save you 27% on the flight price compared to flying in the afternoon, which is usually more expensive.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$123 | Average$208 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$231 | Average$488 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$237 | Average$467 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$246 | Average$465 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$256 | Average$256 | FlexibilityNo cancel fee | On-timeN/A |