Route Price Intelligence
Cheap Flights From Washington, D.C. to Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$341
Deals From
$321
Usually Costs
$321 – $372
Lowest We've Seen
$160
Based on 4,133 price pointshigh confidence
Monthly Price Guide
Jan
$351
Feb
$361
Mar
$770
Apr
$260
May
$266
Jun
$317
Jul
$336
Aug
$341
Sep
$341
Oct
$341
Nov
$351
Dec
$391
Cheapest Average Expensive
Best Time to Fly from Washington, D.C. to Ontario
The cheapest time to fly from Washington, D.C. to Ontario is typically April, when fares average around $260. The most expensive month tends to be March at around $770. For the best deals, consider flying in April, May, June.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $13975 price checksWorst: $220