C$ 63 Find Cheap Flights from Ontario to San Francisco – Compare and Save

These are the earliest and latest flight times available from Ontario to San Francisco:

• Earliest: departs at 6:00 am and lands at 7:34 am
• Latest: departs at 8:31 pm and lands at 10:05 pm.

The flight takes about 1h 34m.

Only Economy Class is available on flights from Ontario to San Francisco.

A direct flight from Ontario to San Francisco takes 1h 34m, covering 941 km.

No, a passport is not required for this domestic route, but you will need another form of identification, such as a driver's licence.

Round-trip flights from Ontario to San Francisco range from C$ 190 to C$ 385, with an average of C$ 270 over the past 12 months. Anything below C$ 190 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 28% above the C$ 270 route average. Book 4 weeks before departure for the lowest fares.

On this route, direct flights are cheaper than layover options on average. Direct fares average C$ 269 round-trip, compared to C$ 330 via a layover through Denver Intl (DEN).

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 57–C$ 142 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

The Airbus A320neo family is used most often on this route, operated mainly by Frontier. Other aircraft seen on the route include Boeing 737 MAX 9 variants.

Morning is the busiest departure period on Ontario to San Francisco flights, with 40% leaving in that window. Afternoon departures account for 40%, Evening flights for 20%, and Night flights for 0%.

JetBlue is the only airline on the Ontario to San Francisco route offering in-flight Wi-Fi. Pricing depends on fare class.

One-way fares from Ontario to San Francisco are currently lower than usual. Average one-way flight prices are about C$ 107, which is 41% below the typical average for this route.

San Francisco Airport (SFO) hosts 5 major car rental companies, with daily rates starting from around C$ 22 for economy cars. Top options include:

• Thrifty
• Europcar
• Dollar
• Hertz
• Fox

Flights from Ontario to San Francisco usually depart from Ontario (ONT) and arrive at San Francisco (SFO).

One-stop flights from Ontario to San Francisco most commonly connect through:

• Las Vegas Harry Reid Intl (LAS) – 75% of one-stop connections
• Phoenix Sky Harbor Intl (PHX) – 17% of one-stop connections
• Denver Intl (DEN) – 8% of one-stop connections

Yes. Flexible dates can save you up to 33% on flights from Ontario to San Francisco. Thursday is the cheapest departure day at C$ 251 round-trip on average, while Sunday is the most expensive at C$ 372, a difference of C$ 121.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

2 airlines operate flights between Ontario and San Francisco. The airlines offering direct flights on this route include:

• United Airlines
• Frontier

Flying via Phoenix Sky Harbor Intl (PHX) gives the shortest average 1-stop total travel time at 5h 11m, compared with 9h 13m via Las Vegas Harry Reid Intl (LAS) and 18h 28m via Denver Intl (DEN).

Some of the most popular sights in San Francisco are Fisherman's Wharf, Union Square, and Moscone Center. These are among the most viewed places in San Francisco on KAYAK.

Among airlines operating Ontario to San Francisco flights:

• Frontier: offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Frontier: a carry-on bag and a checked bag in Economy Class
• United Airlines: a carry-on bag and a checked bag in Economy Class
• JetBlue: a cabin bag in Economy Class class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.