Direct flights from San Francisco to Ontario SFO → ONT

Frontier Airlines and United Airlines fly nonstop from San Francisco (SFO) to Ontario (ONT), several times daily. The flight takes about 1h 15m and covers 364 miles (585 km). Arrivals run on time 64.6% at SFO and 78.9% at ONT — BTS data for the last three months, counting arrivals within 15 minutes of schedule.

🔔 Watch SFO → ONT

We'll run this search daily and email you the cheapest direct fares we find.

Free · checked daily · one-click unsubscribe

Frontier Airlines F9 United Airlines UA

More nonstops from San Francisco

SFO → LAS Las Vegas 12 airlines SFO → LAX Los Angeles 11 airlines SFO → SLC Salt Lake City 10 airlines SFO → ICN Seoul 7 airlines SFO → JFK New York 4 airlines SFO → PHX Phoenix 4 airlines SFO → SAN San Diego 4 airlines SFO → SEA Seattle 4 airlines

Frequently asked questions

Is there a direct flight from San Francisco to Ontario?

Yes, Frontier Airlines and United Airlines operate nonstop flights from San Francisco (SFO) to Ontario (ONT).

Which airlines fly direct from San Francisco to Ontario?

Frontier Airlines, United Airlines operate nonstop flights from San Francisco to Ontario.

How long is the flight from San Francisco to Ontario?

The nonstop flight from San Francisco to Ontario takes ~1h 15m (approximately 585 km).

How often do direct flights operate from San Francisco to Ontario?

Nonstop flights from San Francisco to Ontario operate multiple daily.

What is the on-time performance for flights from San Francisco to Ontario?

Arrivals run on time 64.6% at SFO and 78.9% at ONT — BTS data for the last three months, counting arrivals within 15 minutes of schedule.

Explore More

SFO All direct flights from San Francisco ONT All direct flights from Ontario ONT → SFO Return: Ontario to San Francisco

Scout — our search agent — hunts nonstop fares from San Francisco every night and pings you when one's worth booking.

Watch it work →