Route Price Intelligence
Cheap Flights From Washington, D.C. to Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$447
Deals From
$355
Usually Costs
$355 – $456
Lowest We've Seen
$139
Based on 8,297 price pointshigh confidence
Monthly Price Guide
Jan
$451
Feb
$451
Mar
$466
Apr
$345
May
$290
Jun
$442
Jul
$389
Aug
$357
Sep
$451
Oct
$451
Nov
$457
Dec
$487
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 May, when fares average around $290. The most expensive month tends to be December at around $487. For the best deals, consider flying in May, April, August.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $13987 price checksWorst: $274