$120 Cheap Frontier Airlines flights Boston (BOS) to San Francisco (SFO)

$120 Cheap Frontier Airlines flights Boston (BOS) to San Francisco (SFO)

Prices were available within the past 7 days and start at $120 for one-way flights and $218 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, May 28 - Sun, Jun 1

BOS

Boston

SFO

San Francisco

$218 Roundtrip, found 8 hours ago

$218

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Wed, May 28 from Boston to San Francisco, returning Sun, Jun 1, priced at $218 found 8 hours ago

Mon, May 26 - Tue, Jun 3

BOS

Boston

SFO

San Francisco

$260 Roundtrip, found 8 hours ago

$260

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Mon, May 26 from Boston to San Francisco, returning Tue, Jun 3, priced at $260 found 8 hours ago

Mon, May 26 - Thu, May 29

BOS

Boston

SFO

San Francisco

$290 Roundtrip, found 8 hours ago

$290

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Mon, May 26 from Boston to San Francisco, returning Thu, May 29, priced at $290 found 8 hours ago