Route Price Intelligence
Cheap Flights From Denver to Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$360
Deals From
$210
Usually Costs
$210 – $438
Lowest We've Seen
$56
Based on 3,539 price pointshigh confidence
Monthly Price Guide
Jan
$448
Feb
$437
Mar
$457
Apr
$191
May
$127
Jun
$210
Jul
$230
Aug
$230
Sep
$437
Oct
$437
Nov
$448
Dec
$448
Cheapest Average Expensive
Best Time to Fly from Denver to Ontario
The cheapest time to fly from Denver to Ontario is typically May, when fares average around $127. The most expensive month tends to be March at around $457. 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: $5670 price checksWorst: $125