Cheapest€52.06
- SkyWest SW735209:171h 16m10:33San Francisco SFOOntario ONT
Door to door 4h 26mCO2 150.8 kgChanges 0Fixed, no changes
San Francisco to Ontario flight
Flights from San Francisco to Ontario start at €52.06 and take 4h 21m at their fastest.
Check dates and fares
Fares and seats move by the day. Price San Francisco to Ontario on the date you actually want, rather than on the date this page was built.
The Flights from San Francisco to Ontario starts at €52.06 and takes 4h 21m door to door, run by 4 operators over 613 km, with around 24 departures a day. Fares bottom out about 60 days before departure.
- 4h 21mDoor to door
- 1h 11mMoving
- €63.86 to €145.28From
- 06:06 to 20:00First and last departure
- 24Per day
- 150.8 kgCO2
First and last are taken from the services we sell on October 6, 2026. The return direction keeps its own timetable and is not these times reversed.
€63.86 to €145.28 for one passenger across the 14 departure dates priced here. The low end is one day, not every day. Worked out from this corridor rather than held for anybody. The operator sets the price on the day.
Fares by date
What this journey usually costs, by departure date. It shows which days run dearer.
Typical fares
- about €145.28Thu17
- about €116.96Fri18
- about €119.91Sat19
- about €91.00Sun20
- about €79.20Mon21
- about €78.61Tue22
- about €84.51Wed23
- about €87.46Thu24
- about €78.02Fri25
- about €83.92Sat26
- about €75.66Sun27
- about €65.63Mon28
- about €63.86Tue29
- about €69.76Wed30
Based on what this route has cost recently. The operator sets the price on the day, and the live fare is confirmed when you book.
The cheapest and the fastest on October 6, 2026
Fastest€55.60
- Air Canada AC841019:261h 11m20:37San Francisco SFOOntario ONT
Door to door 4h 21mCO2 150.8 kgChanges 0Fixed, no changes
Airlines
| Operator | From |
|---|---|
 Air Canada | €53.24 |
 Frontier Airlines | €53.24 |
| United Airlines | €53.83 |
 SkyWest | €52.06 |
The flight gets you into Ontario. It does not get you a bed, and neither do we.
A room in Ontario for the night the flight gets in
Sort by distance from East Ontario and you can see which places are ten minutes on foot and which are not.
Search Ontario on Booking.comOr compare on Expedia
Partner links. We do not sell accommodation. We earn a commission when a booking completes, and it never changes what you pay.
When to book San Francisco to Ontario
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €53.2490 days
- €49.7060 days
- €57.3745 days
- €55.0130 days
- €54.4221 days
- €69.7614 days
- €84.517 days
- €119.913 days
- €145.281 days
- Cheapest lead time
- Fares bottom out around 60 days ahead, at €49.70.
- How much it moves
- The gap between the cheapest and most expensive lead time is 192 percent. The most expensive point is €145.28, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 60 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €75.66Sun
- €65.63Mon
- €63.86Tue
- €69.76Wed
- €87.46Thu
- €78.02Fri
- €83.92Sat
Where you leave from and where you arrive
San Francisco
Air
- SFO
Ontario
Air
- ONT
What the journey looks like
- How far it really runs
- The route covers 613 km against 595 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- First and last departure
- The first service of the day leaves San Francisco at 06:06 and the last at 20:00, across 24 departures The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about San Francisco to Ontario
The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from San Francisco to Ontario take?
The Flight from San Francisco to Ontario takes 4h 21m door to door, of which 1h 11m is spent moving. The route runs 613 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from San Francisco to Ontario cost?
The Flight from San Francisco to Ontario starts at €52.06 for one passenger, as of September 16, 2026. A typical fare is €64.75. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from San Francisco to Ontario?
4 operators run the Flight from San Francisco to Ontario: Air Canada, Frontier Airlines, United Airlines, SkyWest. Between them they file around 24 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from San Francisco to Ontario use?
The Flight from San Francisco to Ontario leaves from San Francisco SFO and arrives at Ontario ONT. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Flight from San Francisco to Ontario?
Fares for the Flight from San Francisco to Ontario bottom out around 60 days ahead, at €49.70. The gap between the cheapest and most expensive lead time across the window is 192 percent, measured on September 16, 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from San Francisco to Ontario produce?
The Flight from San Francisco to Ontario produces about 150.8 kg of CO2 per passenger over 613 km, which works out at roughly 246 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.
Where these numbers come from
Places, coordinates, operators, which operator serves which pair, and every distance on this page are real and come from open data. Where a corridor has a filed timetable the departure times are real too, and ferry fares are the prices the operators publish themselves.
Derived from service area No carrier record names this exact pair. The operators listed publish a service area covering both places at a distance their mode plausibly carries people, which is evidence that the corridor is served and not evidence of a specific service. Pages state which, because presenting the two as the same thing would be dishonest.
Where no operator publishes a fare for a corridor, the price here is our own estimate, worked out from the real distance and the real operator through a fare curve that follows lead time, day of the week and season. It tells you roughly what the journey costs. It is not a seat anyone has agreed to sell, and the payment step will not take it.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for San Francisco to Ontario on September 16, 2026: 613 km of route against 595 km in a straight line, 24 services a day, 4 operators a cheapest fare of €52.06, and 4h 21m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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