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
American Airlines
American Airlines
ONT
8:38 am
Ontario airport
5h 34m
1 Stop
4:12 pm
ORD
Chicago O'Hare International airport
American Airlines
ORD
11:00 pm
Chicago O'Hare International airport
6h 01m
1 Stop
3:01 am
+1
ONT
Ontario airport
174 USD
United Airlines
United Airlines
ONT
1:45 am
Ontario airport
6h 43m
1 Stop
10:28 am
ORD
Chicago O'Hare International airport
United Airlines
ORD
9:34 am
Chicago O'Hare International airport
8h 19m
1 Stop
3:53 pm
ONT
Ontario airport
194 USD
American Airlines
American Airlines
ONT
5:10 pm
Ontario airport
7h 10m
1 Stop
2:20 am
+1
ORD
Chicago O'Hare International airport
American Airlines
ORD
11:00 pm
Chicago O'Hare International airport
5h 55m
1 Stop
2:55 am
+1
ONT
Ontario airport
194 USD
Major Airline
Major Airline
ONT
9:05 am
Ontario airport
6h 20m
1 Stop
5:25 pm
MDW
Chicago Midway airport
Major Airline
MDW
2:25 pm
Chicago Midway airport
4h 00m
4:25 pm
ONT
Ontario airport
344 USD
American Airlines
American Airlines
ONT
8:38 am
Ontario airport
5h 34m
1 Stop
4:12 pm
ORD
Chicago O'Hare International airport
American Airlines
ORD
11:00 pm
Chicago O'Hare International airport
6h 01m
1 Stop
3:01 am
+1
ONT
Ontario airport
174 USD
Delta
Delta
ONT
3:10 am
Ontario airport
6h 07m
1 Stop
11:17 am
ORD
Chicago O'Hare International airport
Delta
ORD
12:00 am
Chicago O'Hare International airport
5h 56m
1 Stop
3:56 am
ONT
Ontario airport
243 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
April
The cheapest time of year to fly to Chicago from Ontario is April. 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
in the Afternoon
Ontario to Chicago flights are approximately 12% more expensive in the Morning than in the Afternoon
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 International
Fly from Ontario to Chicago O'Hare International 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 International (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 USD
Ontario
7 USD
Chicago
Soft drink
0.33 liter
2 USD
Ontario
1.78 USD
Chicago
Coffee
Cappuccino
4 USD
Ontario
4 USD
Chicago
Public transport
One-way ticket
2 USD
Ontario
2.49 USD
Chicago

Flights from Ontario to:

Flights to Chicago from:

  • Ontario
  • California
  • United States
  • North America