Route Price Intelligence
Cheap Flights From Chicago to Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$417
Deals From
$270
Usually Costs
$270 – $531
Lowest We've Seen
$145
Based on 3,285 price pointshigh confidence
Monthly Price Guide
Jan
$543
Feb
$551
Mar
$668
Apr
$280
May
$230
Jun
$250
Jul
$334
Aug
$335
Sep
$527
Oct
$531
Nov
$538
Dec
$547
Cheapest Average Expensive
Best Time to Fly from Chicago to Ontario
The cheapest time to fly from Chicago to Ontario is typically May, when fares average around $230. The most expensive month tends to be March at around $668. For the best deals, consider flying in May, June, April.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $16072 price checksWorst: $221