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Cheap flights from Chicago to Ontario International (CHI - ONT)

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The best prices from Chicago to Ontario International are usually found in February or September, booked 56 days in advance, depart on a Saturday or Tuesday and return on a Saturday

+90.0%
+60.0%
+30.0%
Base
Price
$245 - $422
Most popular in November High demand for flights, 13% potential price rise
Cheapest in February Best time to find cheap flights, 3% potential price drop
Average price $276 Price for this month
Cheapest price $245 From Chicago to Ontario International

Cheap flights from Chicago to Ontario International in September 2019

The best prices found for ORD to ONT flights for September
24 Sep - 28 Sep
$208pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
25 Sep - 28 Sep
$208pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
28 Sep - 30 Sep
$226pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl

Chicago to Ontario International 2019 flight deals

Cheap flights to Ontario International from Chicago found for this year
17 Oct - 23 Oct
$208pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
22 Oct - 28 Oct
$208pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
23 Oct - 29 Oct
$208pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl

Last minute flights from Chicago to Ontario International

Late deals on round-trip flights to Ontario International from Chicago, departing today and this week
20 Sep - 24 Sep
$231pp
ORD
Chicago O'Hare Intl
Frontier
   
2 STOPS
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
23 Sep - 1 Oct
$231pp
ORD
Chicago O'Hare Intl
Frontier
   
2 STOPS
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
21 Sep - 25 Sep
$244pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
ONT
Ontario
ONT
Ontario
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl

Destination information for Ontario International

Things to know before you go. Useful info for your trip from Chicago to Ontario International
Flight duration
4h 18m

Airports servicing Chicago

Chicago-O'Hare Intl (ORD)
Rockford (RFD)

Airports servicing Ontario

At this time of year, it’s likely that there will be 2 inches less rainfall in Ontario International than in Chicago .
The weather is expected to be 14°F warmer than Chicago (77°F) if the weather forecasters have predicted correctly!
The days of the week where direct flights between Chicago and Ontario International are currently available are Sun, Mon, Tue, Wed, Thu, Fri and Sat
Which airlines fly from Chicago to Ontario International?
Airlines such as American Airlines and Southwest operate direct flights from Chicago to Ontario International.
In the last month, 56 people have been searching for flights from Chicago to Ontario International.
How many flights depart from Chicago to Ontario on average per day?
On average, you can expect to see 3 flights from Chicago to Ontario a day.
Afternoon (Noon - 6pm) - 33% of flight departures
Evening (6pm - Midnight) - 67% of flight departures
How long does the flight from Chicago to Ontario take?
A nonstop flight takes up to 5 hours, covering a distance of 1,064 miles.