$119 Cheap United flights Boston (BOS) to San Francisco (SFO)

$119 Cheap United flights Boston (BOS) to San Francisco (SFO)

Prices were available within the past 7 days and start at $119 for one-way flights and $255 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Dec 12 - Mon, Dec 29

BOS

Boston

SFO

San Francisco

$255 Roundtrip, found 4 days ago

$255

Roundtrip

found 4 days ago

Select United flight, departing Fri, Dec 12 from Boston to San Francisco, returning Mon, Dec 29, priced at $255 found 4 days ago

Fri, Dec 12 - Mon, Dec 29

BOS

Boston

SFO

San Francisco

$265 Roundtrip, found 4 days ago

$265

Roundtrip

found 4 days ago

Select United flight, departing Fri, Dec 12 from Boston to San Francisco, returning Mon, Dec 29, priced at $265 found 4 days ago

Fri, Dec 12 - Mon, Dec 29

BOS

Boston

SFO

San Francisco

$307 Roundtrip, found 4 days ago

$307

Roundtrip

found 4 days ago

Select United flight, departing Fri, Dec 12 from Boston to San Francisco, returning Mon, Dec 29, priced at $307 found 4 days ago