$204 Cheap United flights Boston (BOS) to San Francisco (SFO)

$204 Cheap United flights Boston (BOS) to San Francisco (SFO)

Prices were available within the past 7 days and start at $204 for one-way flights and $297 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Apr 23 - Sun, May 3

BOS

Boston

SFO

San Francisco

$297 Roundtrip, found 3 days ago

$297

Roundtrip

found 3 days ago

Select United flight, departing Thu, Apr 23 from Boston to San Francisco, returning Sun, May 3, priced at $297 found 3 days ago

Thu, Apr 23 - Sun, May 3

BOS

Boston

SFO

San Francisco

$307 Roundtrip, found 3 days ago

$307

Roundtrip

found 3 days ago

Select United flight, departing Thu, Apr 23 from Boston to San Francisco, returning Sun, May 3, priced at $307 found 3 days ago

Sat, May 23 - Tue, Jun 9

BOS

Boston

SFO

San Francisco

$316 Roundtrip, found 5 days ago

$316

Roundtrip

found 5 days ago

Select United flight, departing Sat, May 23 from Boston to San Francisco, returning Tue, Jun 9, priced at $316 found 5 days ago

Thu, Apr 23 - Sun, May 3

BOS

Boston

SFO

San Francisco

$317 Roundtrip, found 3 days ago

$317

Roundtrip

found 3 days ago

Select United flight, departing Thu, Apr 23 from Boston to San Francisco, returning Sun, May 3, priced at $317 found 3 days ago