$29 Cheap United flights San Francisco (SFO) to Ontario (ONT)

$29 Cheap United flights San Francisco (SFO) to Ontario (ONT)

Prices were available within the past 7 days and start at $29 for one-way flights and $117 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jun 10 - Thu, Jun 12

SFO

San Francisco

ONT

Ontario

$117 Roundtrip, found 4 days ago

$117

Roundtrip

found 4 days ago

Select United flight, departing Tue, Jun 10 from San Francisco to Ontario, returning Thu, Jun 12, priced at $117 found 4 days ago

Thu, Aug 28 - Mon, Sep 1

SFO

San Francisco

ONT

Ontario

$133 Roundtrip, found 14 hours ago

$133

Roundtrip

found 14 hours ago

Select United flight, departing Thu, Aug 28 from San Francisco to Ontario, returning Mon, Sep 1, priced at $133 found 14 hours ago

Thu, Aug 28 - Mon, Sep 1

SFO

San Francisco

ONT

Ontario

$159 Roundtrip, found 14 hours ago

$159

Roundtrip

found 14 hours ago

Select United flight, departing Thu, Aug 28 from San Francisco to Ontario, returning Mon, Sep 1, priced at $159 found 14 hours ago

Thu, Aug 28 - Mon, Sep 1

SFO

San Francisco

ONT

Ontario

$163 Roundtrip, found 14 hours ago

$163

Roundtrip

found 14 hours ago

Select United flight, departing Thu, Aug 28 from San Francisco to Ontario, returning Mon, Sep 1, priced at $163 found 14 hours ago

Thu, Aug 28 - Mon, Sep 1

SFO

San Francisco

ONT

Ontario

$178 Roundtrip, found 14 hours ago

$178

Roundtrip

found 14 hours ago

Select United flight, departing Thu, Aug 28 from San Francisco to Ontario, returning Mon, Sep 1, priced at $178 found 14 hours ago

Thu, Aug 28 - Mon, Sep 1

SFO

San Francisco

ONT

Ontario

$198 Roundtrip, found 14 hours ago

$198

Roundtrip

found 14 hours ago

Select United flight, departing Thu, Aug 28 from San Francisco to Ontario, returning Mon, Sep 1, priced at $198 found 14 hours ago