Effective May 1, we’re updating our Privacy and Cookie Policies. OK

Flights from Ontario to Chicago

Depart
Return
Any month
Compare vs. momondo |

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
ONT
1:43 pm
Ontario airport
10h 50m
1 Stop
2:33 am
+1
ORD
Chicago O'Hare Intl airport
Frontier
ORD
11:47 am
Chicago O'Hare Intl airport
7h 22m
1 Stop
5:09 pm
ONT
Ontario airport
207 USD
Frontier
Frontier
ONT
3:57 pm
Ontario airport
13h 50m
1 Stop
7:47 am
+1
ORD
Chicago O'Hare Intl airport
Frontier
ORD
2:49 am
Chicago O'Hare Intl airport
13h 42m
1 Stop
2:31 pm
ONT
Ontario airport
210 USD
Frontier
Frontier
ONT
4:10 pm
Ontario airport
13h 37m
1 Stop
7:47 am
+1
ORD
Chicago O'Hare Intl airport
Frontier
ORD
2:49 am
Chicago O'Hare Intl airport
13h 44m
1 Stop
2:33 pm
ONT
Ontario airport
210 USD
Delta
Delta
ONT
11:00 pm
Ontario airport
6h 17m
1 Stop
7:17 am
+1
ORD
Chicago O'Hare Intl airport
Delta
ORD
1:00 am
Chicago O'Hare Intl airport
5h 41m
1 Stop
4:41 am
ONT
Ontario airport
244 USD
Delta
Delta
ONT
11:00 pm
Ontario airport
6h 14m
1 Stop
7:14 am
+1
ORD
Chicago O'Hare Intl airport
Delta
ORD
12:48 pm
Chicago O'Hare Intl airport
6h 04m
1 Stop
4:52 pm
ONT
Ontario airport
244 USD
United Airlines
United Airlines
ONT
9:15 am
Ontario airport
5h 23m
1 Stop
4:38 pm
ORD
Chicago O'Hare Intl airport
United Airlines
ORD
11:47 am
Chicago O'Hare Intl airport
7h 22m
1 Stop
5:09 pm
ONT
Ontario airport
237 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
CHEAPEST MONTH TO FLY
February
The cheapest time of year to fly to Chicago from Ontario is February. Most expensive is November
CHEAPEST DAY TO FLY
Thursday
The cheapest day of the week is typically Thursday. The most expensive is typically Sunday
CHEAPEST TIME TO FLY
at Noon
Ontario to Chicago flights are approximately 21% more expensive in the Evening than at Noon
CHEAPEST AIRLINE
Frontier
Frontier, Spirit Airlines, and Alaska Airlines are the most popular carriers operating from Ontario to Chicago
CHEAPEST ROUTE
Ontario - Chicago O'Hare Intl
Fly from Ontario to Chicago O'Hare Intl for the best Ontario - Chicago flight prices
CHEAPEST TIME TO BOOK
34 days before
The cheapest time to buy a flight from Ontario to Chicago is approximately 34 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

Cost comparison between Ontario and Chicago

Compare the costs of everyday items in Ontario and Chicago
Food
Inexpensive restaurant
15 USD
Ontario
15 USD
Chicago
Fast food
McDonald's meal
7.54 USD
Ontario
7.04 USD
Chicago
Soft drink
0.33 liter
1.95 USD
Ontario
1.82 USD
Chicago
Coffee
Cappuccino
4.10 USD
Ontario
4.11 USD
Chicago
Public transport
One-way ticket
2.51 USD
Ontario
2.51 USD
Chicago

Flights from Ontario to:

Flights to Chicago from:

  • Ontario
  • California
  • United States
  • North America