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Flights from Ontario to Chicago
Ontario to Chicago flight comparison made easy
Below you can see the best fares for your route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Ontario to Chicago by changing tabs
Quickest
Cheapest
Frontier
31 Aug
ONT
1:21 pm
Ontario airport
11h 01m
1 Stop
2:22 am
+1
ORD
Chicago O'Hare Intl airport
10 Sep
ORD
12:20 am
Chicago O'Hare Intl airport
18h 53m
1 Stop
5:13 pm
ONT
Ontario airport
200 USD
Frontier
07 Sep
ONT
4:10 pm
Ontario airport
13h 46m
1 Stop
7:56 am
+1
ORD
Chicago O'Hare Intl airport
10 Sep
ORD
12:20 am
Chicago O'Hare Intl airport
18h 53m
1 Stop
5:13 pm
ONT
Ontario airport
200 USD
Frontier
11 Sep
ONT
4:10 pm
Ontario airport
13h 46m
1 Stop
7:56 am
+1
ORD
Chicago O'Hare Intl airport
25 Sep
ORD
12:20 am
Chicago O'Hare Intl airport
18h 53m
1 Stop
5:13 pm
ONT
Ontario airport
200 USD
Delta
02 Nov
ONT
11:00 pm
Ontario airport
5h 44m
1 Stop
6:44 am
+1
ORD
Chicago O'Hare Intl airport
06 Nov
ORD
1:00 pm
Chicago O'Hare Intl airport
6h 11m
1 Stop
5:11 pm
ONT
Ontario airport
244 USD
Delta
20 Nov
ONT
10:00 pm
Ontario airport
6h 01m
1 Stop
6:01 am
+1
ORD
Chicago O'Hare Intl airport
03 Dec
ORD
11:00 pm
Chicago O'Hare Intl airport
5h 58m
1 Stop
2:58 am
+1
ONT
Ontario airport
244 USD
American Airlines
25 Dec
ONT
1:55 am
Ontario airport
6h 02m
1 Stop
9:57 am
ORD
Chicago O'Hare Intl airport
04 Jan
ORD
11:00 pm
Chicago O'Hare Intl airport
6h 00m
1 Stop
3:00 am
+1
ONT
Ontario airport
244 USD
How to get the cheapest flight from Ontario to Chicago
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight for your trip
What is the cheapest month to fly to Chicago?
February
The cheapest time of year to fly to Chicago from Ontario is February. Most expensive is June
What is the cheapest day to fly to Chicago?
Tuesday
The cheapest day of the week is typically Tuesday. The most expensive is typically Sunday
When is the cheapest time to fly to Chicago?
in the afternoon
Ontario to Chicago flights are approximately 17% more expensive in the morning than in the afternoon
What is the cheapest airline that flies to Chicago?
Frontier
Frontier, Spirit Airlines, and Alaska Airlines are the most popular carriers operating from Ontario to Chicago
What is the cheapest route?
Ontario - Chicago O'Hare Intl
Fly from Ontario to Chicago O'Hare Intl for the best Ontario - Chicago flight prices
When is the cheapest time to book a flight to Chicago?
46 days before
The cheapest time to buy a flight from Ontario to Chicago is approximately 46 days to departure
60
Days before departure
0
Flight information for Ontario to Chicago
Find info about flight duration, direct flights, and airports for your flight from Ontario to Chicago
| Fastest flight time | 3h 45m | The fastest flight from Ontario to Chicago takes 3h 45m. | |
| Direct flights | Every day | Direct flights go from Ontario to Chicago every day. | |
| Airports in Chicago | 3 airports | There are 3 airports near Chicago: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Chicago Greater Rockford (RFD) |
Alternative routes for Ontario to Chicago
Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
View more
Flights from Ontario to:
-
Chicago
-
Illinois
- United States
-
North America
Flights to Chicago from:
-
Ontario
-
California
-
United States
-
North America
Flights to other cities in United States
Lost the lust for United States? Check out some flights to other cities in Chicago
Flights to other destinations
Lost the lust for Chicago? Check out some flights to other destinations
*Flight prices to Chicago are based on prices for economy tickets found by momondo users during searches within the last 72 hours. These prices may no longer be available.