Route Price Intelligence
Cheap Flights From Washington, D.C. to Ontario
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$329
Deals From
$258
Usually Costs
$258 – $399
Lowest We've Seen
$180
Based on 8,441 price pointshigh confidence
Monthly Price Guide
Jan
$381
Feb
$327
Mar
$345
Apr
$322
May
$345
Jun
$381
Jul
$351
Aug
$345
Sep
$345
Oct
$345
Nov
$345
Dec
$378
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 $322. The most expensive month tends to be June at around $381. For the best deals, consider flying in April, February, October.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $16860 price checksWorst: $274