Flights from Ontario to Chicago

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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
Frontier
31 Aug
ONT
1:21 pm
Ontario airport
11h 01m
1 Stop
2:22 am
+1
ORD
Chicago O'Hare Intl airport
Frontier
10 Sep
ORD
12:20 am
Chicago O'Hare Intl airport
18h 53m
1 Stop
5:13 pm
ONT
Ontario airport
200 USD
Frontier
Frontier
07 Sep
ONT
4:10 pm
Ontario airport
13h 46m
1 Stop
7:56 am
+1
ORD
Chicago O'Hare Intl airport
Frontier
10 Sep
ORD
12:20 am
Chicago O'Hare Intl airport
18h 53m
1 Stop
5:13 pm
ONT
Ontario airport
200 USD
Frontier
Frontier
11 Sep
ONT
4:10 pm
Ontario airport
13h 46m
1 Stop
7:56 am
+1
ORD
Chicago O'Hare Intl airport
Frontier
25 Sep
ORD
12:20 am
Chicago O'Hare Intl airport
18h 53m
1 Stop
5:13 pm
ONT
Ontario airport
200 USD
Delta
Delta
02 Nov
ONT
11:00 pm
Ontario airport
5h 44m
1 Stop
6:44 am
+1
ORD
Chicago O'Hare Intl airport
Delta
06 Nov
ORD
1:00 pm
Chicago O'Hare Intl airport
6h 11m
1 Stop
5:11 pm
ONT
Ontario airport
244 USD
Delta
Delta
20 Nov
ONT
10:00 pm
Ontario airport
6h 01m
1 Stop
6:01 am
+1
ORD
Chicago O'Hare Intl airport
Delta
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
American Airlines
25 Dec
ONT
1:55 am
Ontario airport
6h 02m
1 Stop
9:57 am
ORD
Chicago O'Hare Intl airport
American Airlines
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
San Diego to Chicago
Fastest flight time
3h 51m
Cheapest price
103 USD
Los Angeles to Chicago
Fastest flight time
3h 47m
Cheapest price
113 USD
Los Angeles to Indianapolis
Fastest flight time
3h 50m
Cheapest price
164 USD
San Diego to Indianapolis
Fastest flight time
5h 51m
Cheapest price
171 USD
Palm Springs to Chicago
Fastest flight time
3h 47m
Cheapest price
263 USD
View more

Flights from Ontario to:

Flights to Chicago from:

  • Ontario
  • California
  • United States
  • North America