$219 Cheap United flights Boston (BOS) to San Francisco (SFO)

$219 Cheap United flights Boston (BOS) to San Francisco (SFO)

Prices were available within the past 7 days and start at $219 for one-way flights and $317 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Aug 29 - Tue, Sep 1

BOS

Boston

SFO

San Francisco

$317 Roundtrip, found 8 hours ago

$317

Roundtrip

found 8 hours ago

Select United flight, departing Sat, Aug 29 from Boston to San Francisco, returning Tue, Sep 1, priced at $317 found 8 hours ago

Sat, Aug 29 - Tue, Sep 1

BOS

Boston

SFO

San Francisco

$324 Roundtrip, found 8 hours ago

$324

Roundtrip

found 8 hours ago

Select United flight, departing Sat, Aug 29 from Boston to San Francisco, returning Tue, Sep 1, priced at $324 found 8 hours ago

Sat, Aug 29 - Tue, Sep 1

BOS

Boston

SFO

San Francisco

$334 Roundtrip, found 8 hours ago

$334

Roundtrip

found 8 hours ago

Select United flight, departing Sat, Aug 29 from Boston to San Francisco, returning Tue, Sep 1, priced at $334 found 8 hours ago

Mon, Aug 31 - Tue, Sep 1

BOS

Boston

SFO

San Francisco

$335 Roundtrip, found 3 days ago

$335

Roundtrip

found 3 days ago

Select United flight, departing Mon, Aug 31 from Boston to San Francisco, returning Tue, Sep 1, priced at $335 found 3 days ago

Mon, Aug 31 - Tue, Sep 1

BOS

Boston

SFO

San Francisco

$345 Roundtrip, found 3 days ago

$345

Roundtrip

found 3 days ago

Select United flight, departing Mon, Aug 31 from Boston to San Francisco, returning Tue, Sep 1, priced at $345 found 3 days ago

Sat, Aug 29 - Tue, Sep 1

BOS

Boston

SFO

San Francisco

$363 Roundtrip, found 8 hours ago

$363

Roundtrip

found 8 hours ago

Select United flight, departing Sat, Aug 29 from Boston to San Francisco, returning Tue, Sep 1, priced at $363 found 8 hours ago