Route Price Intelligence
Cheap Flights From San Diego to Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$451
Deals From
$422
Usually Costs
$422 – $515
Lowest We've Seen
$185
Based on 3,267 price pointshigh confidence
Monthly Price Guide
Jan
$523
Feb
$523
Mar
$568
Apr
$580
May
$328
Jun
$401
Jul
$451
Aug
$443
Sep
$443
Oct
$451
Nov
$535
Dec
$544
Cheapest Average Expensive
Best Time to Fly from San Diego to Ontario
The cheapest time to fly from San Diego to Ontario is typically May, when fares average around $328. The most expensive month tends to be April at around $580. For the best deals, consider flying in May, June, August.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $18560 price checksWorst: $337