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

Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from Philadelphia (PHL) to Ontario (ONT), with fares starting from $174.

What is the lowest current fare from PHL to ONT?

The lowest currently-listed fare from Philadelphia (PHL) to Ontario (ONT) is $174 on 2026-06-09.

Is there a direct flight from Philadelphia to Ontario?

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

Cheap flights from Philadelphia to Ontario

Cheapest current fares: $174 in June 2026 on connecting flights.

Last updated May 25, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Philadelphia (PHL) to Ontario (ONT). Refreshed daily.

Philadelphia (PHL) → Ontario (ONT)

June 2026 $174
May 2026 $265

Frequently asked questions

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

Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from Philadelphia (PHL) to Ontario (ONT), with fares starting from $174.
What is the lowest current fare from PHL to ONT?

The lowest currently-listed fare from Philadelphia (PHL) to Ontario (ONT) is $174 on 2026-06-09.
Is there a direct flight from Philadelphia to Ontario?

There is currently no non-stop service from PHL 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.