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Cheap flights San Francisco — Ontario

San Francisco (SFO, US) Ontario (ONT, US)
from $19 597 km ~1h 12m 5 flights found 1 airlines cheapest on Wednesday
Reverse route
How many travellers?
Adults
12+ years
1
Children
2–11 years
0
Infants
under 2
0
Choose your departure date
Cheapest: $19 on 08.12.2026
Prices shown are from searches by other travellers over the last 24 hours. Missing a date? Click any day — we'll find tickets anyway.
November 2026
Mo
Tu
We
Th
Fr
Sa
Su
December 2026
Mo
Tu
We
Th
Fr
Sa
Su
January 2027
Mo
Tu
We
Th
Fr
Sa
Su
Prices found for 10 of 90 days. Prices update as more travellers search. Click any date to search live.
Depart
—
Return
—
Cheapest flights found
09 Dec 2026, Wed
Frontier Airlines F9 1160
08:56
SFO San Francisco International Airport
10:23
ONT Ontario International Airport
1h 27m Direct
Gotogate
$19
View this ticket
17 Nov 2026, Tue
Frontier Airlines F9 1160
05:04
SFO San Francisco International Airport
06:30
ONT Ontario International Airport
1h 26m Direct
Mytrip.com
$24
View this ticket
21 Nov 2026, Sat
Frontier Airlines F9 2678
09:59
SFO San Francisco International Airport
11:24
ONT Ontario International Airport
1h 25m Direct
Farera
$29
View this ticket
Route characteristics
Distance
597 km
Flight time
1h 12m
Time difference
+0h
Minimum price
from $19 (08.12.2026)
Average price
$33
Maximum price
$68
Cheapest day
Wednesday
Departure airports (1)
SFO San Francisco International Airport
Arrival airports (1)
ONT Ontario International Airport
Airlines (1)
F9 Frontier Airlines
Agencies (4)
Gotogate Mytrip.com Farera Авиасейлс
Prices by day of week
Tuesday
$24
avg $24
Wednesday
$19
avg $19
Cheapest
Saturday
$29
avg $29
Price trend by month
November 2026
from $24
avg $27
2 flights
December 2026
from $19
avg $19
1 flights
Airlines — cheapest prices 1
Frontier Airlines
Frontier Airlines
Low-cost 5 flights · 5 days
$19
Where to buy tickets 4
Gotogate
1 tickets · 1 days
from $19
Mytrip.com
1 tickets · 1 days
from $24
Farera
2 tickets · 2 days
from $29
Авиасейлс
1 tickets · 1 days
from $205
Airports

From — San Francisco (1)

  • SFO San Francisco International Airport

To — Ontario (1)

  • ONT Ontario International Airport
Other destinations from San Francisco
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Amsterdam
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Anchorage
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Ankara
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Aspen
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Athens
GR
Frequently asked questions about the route San Francisco — Ontario
How long is the flight from San Francisco to Ontario?
Approximate flight time — 1h 12m. This is an average for a direct flight. With connections, the time may be longer.
What is the distance from San Francisco to Ontario?
The straight-line distance — 597 km.
How much do flights from San Francisco to Ontario cost?
The minimum price over 3 months — from $19 on 08.12.2026.
What is the average ticket price?
The average price — $33. Range: $19 — $68.
What is the time difference between San Francisco and Ontario?
The difference — +0h.
From which airports does San Francisco operate flights?
From San Francisco: SFO (San Francisco International Airport).
To which airports in Ontario do flights arrive?
To Ontario: ONT (Ontario International Airport).
Which airlines fly this route?
This route is served by 1 airline: Frontier Airlines.
Are there direct flights?
Yes, there are direct flights. Minimum direct price — from $19. Total direct flights found: 3.
Which day of the week is cheapest?
The cheapest day of the week — Wednesday.
When is the best time to buy tickets?
Optimal — 1–3 months before departure. Check the calendar above — it shows the best dates.
How do I book flights?
Click "View this ticket" on any flight card — you'll be redirected to the booking page with this specific ticket pre-selected.
About the route San Francisco — Ontario

Flights San Francisco — Ontario is a popular route. The straight-line distance is 597 km. Flight time 1h 12m. Time difference +0h.

From San Francisco (SFO) flights depart from 1 airport: SFO. To Ontario (ONT) — 1 arrival airport: ONT.

1 airline operate on this route: Frontier Airlines.

The minimum price for the next 3 months — from $19 (08.12.2026). The cheapest dates are highlighted in the calendar above.

The average ticket price — $33, ranging from $19 to $68. Book 1–3 months in advance to get the best deals.

Cheapest day to fly — Wednesday.

Other destinations in United States from San Francisco
Philadelphia
US
North Bend
US
Owensboro
US
Everett
US
Portland
US
Page
US
Pittsburgh
US
Palm Springs
US

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