$124 Cheap Frontier Airlines flights Boston (BOS) to San Francisco (SFO)

$124 Cheap Frontier Airlines flights Boston (BOS) to San Francisco (SFO)

Prices were available within the past 7 days and start at $124 for one-way flights and $354 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 31 - Tue, Sep 1

BOS

Boston

SFO

San Francisco

$354 Roundtrip, found 8 hours ago

$354

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Mon, Aug 31 from Boston to San Francisco, returning Tue, Sep 1, priced at $354 found 8 hours ago

Mon, Aug 31 - Mon, Sep 14

BOS

Boston

SFO

San Francisco

$515 Roundtrip, found 21 hours ago

$515

Roundtrip

found 21 hours ago

Select Frontier Airlines flight, departing Mon, Aug 31 from Boston to San Francisco, returning Mon, Sep 14, priced at $515 found 21 hours ago