Route Price Intelligence
Cheap Flights From Washington, D.C. to Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$326
Deals From
$300
Usually Costs
$300 – $377
Lowest We've Seen
$160
Based on 268 price pointshigh confidence
Monthly Price Guide
Jan
$361
Feb
—
Mar
—
Apr
$290
May
$272
Jun
$304
Jul
$321
Aug
$314
Sep
$317
Oct
$341
Nov
$358
Dec
$411
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 $272. The most expensive month tends to be December at around $411. 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: $13969 price checksWorst: $220