What is the cheapest month to fly from Washington to Ontario?

Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from Washington (DCA) to Ontario (ONT), with fares starting from $209.

What is the lowest current fare from DCA to ONT?

The lowest currently-listed fare from Washington (DCA) to Ontario (ONT) is $209 on 2026-06-29.

Is there a direct flight from Washington to Ontario?

There is currently no non-stop service from DCA to ONT. Most travellers connect through a hub airport. See our route page for current stopover options.

Cheap flights from Washington to Ontario

Cheapest current fares: $209 in June 2026 on connecting flights.

Last updated May 26, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Washington (DCA) to Ontario (ONT). Refreshed daily.

Washington (DCA) → Ontario (ONT)

June 2026 $209

Frequently asked questions

What is the cheapest month to fly from Washington to Ontario?

Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from Washington (DCA) to Ontario (ONT), with fares starting from $209.
What is the lowest current fare from DCA to ONT?

The lowest currently-listed fare from Washington (DCA) to Ontario (ONT) is $209 on 2026-06-29.
Is there a direct flight from Washington to Ontario?

There is currently no non-stop service from DCA to ONT. Most travellers connect through a hub airport. See our route page for current stopover options.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.