$79 Cheap United flights San Francisco (SFO) to Ontario (ONT)

$79 Cheap United flights San Francisco (SFO) to Ontario (ONT)

Prices were available within the past 7 days and start at $79 for one-way flights and $137 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Nov 19 - Sat, Dec 6

SFO

San Francisco

ONT

Ontario

$137 Roundtrip, found 1 day ago

$137

Roundtrip

found 1 day ago

Select United flight, departing Wed, Nov 19 from San Francisco to Ontario, returning Sat, Dec 6, priced at $137 found 1 day ago

Tue, Dec 2 - Sat, Dec 6

SFO

San Francisco

ONT

Ontario

$147 Roundtrip, found 1 day ago

$147

Roundtrip

found 1 day ago

Select United flight, departing Tue, Dec 2 from San Francisco to Ontario, returning Sat, Dec 6, priced at $147 found 1 day ago

Wed, Dec 31 - Mon, Jan 12

SFO

San Francisco

ONT

Ontario

$157 Roundtrip, found 1 day ago

$157

Roundtrip

found 1 day ago

Select United flight, departing Wed, Dec 31 from San Francisco to Ontario, returning Mon, Jan 12, priced at $157 found 1 day ago