C$ 84 Find Cheap Flights from San Francisco to Ontario – Compare and Save

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

• Earliest: departs at 7:59 am and lands at 9:29 am
• Latest: departs at 10:59 pm and lands at 12:29 am.

The flight takes about 1h 30m.

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

A direct flight from San Francisco to Ontario takes 1h 30m, 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 San Francisco to Ontario range from C$ 204 to C$ 420, with an average of C$ 305 over the past 12 months. Anything below C$ 204 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 23% above the C$ 305 route average. Book 17 weeks before departure for the lowest fares.

On this route, direct flights are cheaper than layover options on average. Direct fares average C$ 304 round-trip, compared to C$ 369 via a layover through Denver Intl (DEN).

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 56–C$ 141 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.

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

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

One-way fares from San Francisco to Ontario are currently lower than usual. Average one-way flight prices are about C$ 111, which is 40% below the typical average for this route.

Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around C$ 26 for economy cars. Top options include:

• Fox
• Thrifty
• Europcar
• Dollar
• Alamo

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

Evening flights have the fewest delays on this route, while night departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the San Francisco to Ontario route, 16% of flights were delayed in the past three months, with delays averaging 1h 55m.

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

• Phoenix Sky Harbor Intl (PHX) – 50% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) – 31% of one-stop connections
• Denver Intl (DEN) – 19% of one-stop connections

Yes. Flexible dates can save you up to 34% on flights from San Francisco to Ontario. Monday is the cheapest departure day at C$ 248 round-trip on average, while Sunday is the most expensive at C$ 370, a difference of C$ 122.

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 San Francisco and Ontario. 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 12m, compared with 5h 35m via Las Vegas Harry Reid Intl (LAS) and 10h 19m via Denver Intl (DEN).

Ontario Convention Center is one of the most viewed places in Ontario on KAYAK.

Among airlines operating San Francisco to Ontario 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.