Route Price Intelligence
Cheap Flights From Chicago to Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$420
Deals From
$280
Usually Costs
$280 – $525
Lowest We've Seen
$145
Based on 8,465 price pointshigh confidence
Monthly Price Guide
Jan
$551
Feb
$551
Mar
$498
Apr
$240
May
$230
Jun
$395
Jul
$385
Aug
$335
Sep
$507
Oct
$525
Nov
$525
Dec
$538
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 February at around $551. For the best deals, consider flying in May, April, August.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $14588 price checksWorst: $241