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Cheap flights from Ontario (ONT) to San Francisco (SFO)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from Ontario (ONT) to San Francisco (SFO)

How to find the cheapest flight from Ontario (ONT) to San Francisco (SFO)
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How to find the cheapest flight from Ontario (ONT) to San Francisco (SFO)
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How to find the cheapest flight from Ontario (ONT) to San Francisco (SFO)
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Cheap flights from Ontario to San Francisco in March , April 2025

23 Mar - 14 Apr $ 62.00
ONT
Ontario
Frontier Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
Frontier Airlines
DIRECT
ONT
Ontario
Pick dates
23 Mar - 28 Apr $ 62.00
ONT
Ontario
Frontier Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
Frontier Airlines
DIRECT
ONT
Ontario
Pick dates
23 Mar - 24 Apr $ 62.00
ONT
Ontario
Frontier Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
Frontier Airlines
DIRECT
ONT
Ontario
Pick dates

Last minute flights from Ontario to San Francisco

23 Mar - 31 Mar $ 94.00
ONT
Ontario
Frontier Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
Frontier Airlines
DIRECT
ONT
Ontario
Pick dates
18 Mar - 31 Mar $ 201.00
ONT
Ontario
United Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
United Airlines
DIRECT
ONT
Ontario
Pick dates
15 Mar - 31 Mar $ 203.00
ONT
Ontario
United Airlines
DIRECT
SFO
San Francisco
SFO
San Francisco
United Airlines
DIRECT
ONT
Ontario
Pick dates

One-way flights to San Francisco from Ontario

8:26 AM - 8:26 AM
Frontier Airlines
0 Stops
1h 36m
ONT - SFO
$ 31
Kiwi
Pick dates
8:26 AM - 8:26 AM
Frontier Airlines
0 Stops
1h 36m
ONT - SFO
$ 31
Kiwi
Pick dates
5:05 AM - 3:53 PM
United Airlines
1 Stops
12h 43m
ONT - SFO
$ 477
Kiwi
Pick dates

How to find the cheapest flight from Ontario (ONT) to San Francisco (SFO)

Related info for your journey
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How to find the cheapest flight from Ontario (ONT) to San Francisco (SFO)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to San Francisco (SFO)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.