
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $133 (Kiwi.com) |
One-way from | $62 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $377 |
Good round-trip deal | $372 or less |
Good one-way deal | $266 or less |
Fly from
Fly to
Route
Depart
Return
Price
ChicagoOntario
MDW - ONT
MDWONT
Chicago Midway
Mon 1/12
3:00 pm-11:56 pm
1 stop10h 56m
Ontario
Thu 1/15
8:02 am-5:20 pm
1 stop7h 18m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Mon 1/26
1:40 pm-12:20 am
1 stop12h 40m
Ontario
Thu 1/29
11:04 am-9:06 pm
1 stop8h 02m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Sat 1/17
3:43 pm-10:59 pm
1 stop9h 16m
Ontario
Sat 1/24
7:15 am-2:46 pm
1 stop5h 31m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Mon 1/12
7:43 pm-11:56 pm
1 stop6h 13m
Ontario
Fri 1/23
10:18 am-8:48 pm
1 stop8h 30m
ChicagoOntario
MDW - ONT
MDWONT
Chicago Midway
Thu 1/15
11:05 am-7:01 pm
1 stop9h 56m
Ontario
Fri 1/16
6:10 am-7:54 pm
1 stop11h 44m
ChicagoOntario
MDW - ONT
MDWONT
Chicago Midway
Fri 1/9
3:05 pm-11:56 pm
1 stop10h 51m
Ontario
Mon 1/12
6:00 am-2:05 pm
1 stop6h 05m
ChicagoOntario
MDW - ONT
MDWONT
Chicago Midway
Mon 1/12
3:00 pm-11:56 pm
1 stop10h 56m
Ontario
Sun 1/18
8:32 am-5:20 pm
1 stop6h 48m
ChicagoOntario
MDW - ONT
MDWONT
Chicago Midway
Thu 1/15
11:05 am-7:01 pm
1 stop9h 56m
Ontario
Sun 1/18
8:32 am-5:20 pm
1 stop6h 48m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Sun 2/8
9:32 pm-12:10 pm
1 stop16h 38m
Ontario
Thu 2/19
7:22 pm-1:09 pm
2 stops15h 47m
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Sun 1/18
10:09 pm-7:37 am
1 stop11h 28m
Ontario
Sun 1/25
6:20 am-12:50 pm
1 stop28h 30m
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 $124). 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 in the evening. Doing so could potentially save you 27% on the flight price compared to flying in the morning, which is usually more expensive.
Travelers seeking maximum savings on their Illinois to Ontario flight should consider departing on Saturday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$125 | Average$231 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$231 | Average$498 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$237 | Average$463 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$246 | Average$430 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$256 | Average$256 | FlexibilityNo cancel fee | On-timeN/A |