Route Price Intelligence
Cheap Flights From Denver to Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$294
Deals From
$215
Usually Costs
$215 – $437
Lowest We've Seen
$56
Based on 8,636 price pointshigh confidence
Monthly Price Guide
Jan
$437
Feb
$437
Mar
$240
Apr
$135
May
$123
Jun
$230
Jul
$250
Aug
$250
Sep
$437
Oct
$437
Nov
$437
Dec
$437
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 $123. The most expensive month tends to be September at around $437. 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: $5688 price checksWorst: $406