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 8,068 price pointshigh confidence
Monthly Price Guide
Jan
$551
Feb
$551
Mar
$540
Apr
$250
May
$225
Jun
$270
Jul
$354
Aug
$316
Sep
$525
Oct
$531
Nov
$531
Dec
$542
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 $225. The most expensive month tends to be February at around $551. For the best deals, consider flying in May, April, June.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $16090 price checksWorst: $221