- Cheapest fare
- $320
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 3h 30m
American Airlines · Mon, Nov 16
from $320
Usually 1+ stop
670 km
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Cheapest month to fly from Santa Rosa to Ontario
Lowest one-way fare per person in each month. Choose a month to see every date.
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About flights from Santa Rosa to Ontario
Santa Rosa (STS) and Ontario (ONT) are about 670 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 3h 30m. Over the next few months, one-way fares start from $320, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Santa Rosa to Ontario?
The cheapest one-way fare we've seen recently is $320 with American Airlines, departing Monday, November 16, 2026.
What is the cheapest month to fly from Santa Rosa to Ontario?
November 2026 currently has the lowest fares, from $320 one way.
Are there direct flights from Santa Rosa to Ontario?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Santa Rosa to Ontario?
The quickest journey we've seen takes about 3h 30m. Santa Rosa and Ontario are around 670 km apart.
Which airlines fly from Santa Rosa to Ontario?
Recent fares on this route were with American Airlines.