Cheap Flights from Washington, D.C. to Ontario
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No deal from Washington, D.C. to Ontario has cleared our price bar yet. What we have seen on the route is below.
Across 2 months of observations from Washington, D.C. to Ontario, the lowest round-trip fare we recorded was $169, in October. The typical fare was $310. October was the cheapest month we saw and September the dearest.
See every deal from Washington, D.C., to Ontario, or the return direction Ontario to Washington, D.C..
Price history: Washington, D.C. to Ontario
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $169 | $356 | 310 |
| Sep 2026 | $183 | $265 | 232 |
Frequently asked questions
How many flight deals from Washington, D.C. to Ontario are on Sparkflights right now?
There are 0 verified deals from Washington, D.C. to Ontario on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Washington, D.C. to Ontario?
The lowest fare we've recorded from Washington, D.C. to Ontario is $169, based on 542 price observations over 2 months.
How much does a flight from Washington, D.C. to Ontario cost?
The typical round-trip fare we observed from Washington, D.C. to Ontario is $310, against a recorded low of $169. These are observations, not quotes.
When is the cheapest month to fly Washington, D.C. to Ontario?
October was the cheapest month we observed from Washington, D.C. to Ontario and September the dearest, over 2 months of data.