$91 Cheap Frontier Airlines flights Boston (BOS) to San Francisco (SFO)

$91 Cheap Frontier Airlines flights Boston (BOS) to San Francisco (SFO)

Prices were available within the past 7 days and start at $91 for one-way flights and $235 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Apr 24 - Sun, May 3

BOS

Boston

SFO

San Francisco

$235 Roundtrip, found 9 hours ago

$235

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Fri, Apr 24 from Boston to San Francisco, returning Sun, May 3, priced at $235 found 9 hours ago

Wed, Apr 22 - Sun, May 3

BOS

Boston

SFO

San Francisco

$255 Roundtrip, found 9 hours ago

$255

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Wed, Apr 22 from Boston to San Francisco, returning Sun, May 3, priced at $255 found 9 hours ago

Thu, Apr 23 - Sun, May 3

BOS

Boston

SFO

San Francisco

$260 Roundtrip, found 2 hours ago

$260

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Thu, Apr 23 from Boston to San Francisco, returning Sun, May 3, priced at $260 found 2 hours ago

Thu, Apr 23 - Sun, May 3

BOS

Boston

SFO

San Francisco

$279 Roundtrip, found 2 hours ago

$279

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Thu, Apr 23 from Boston to San Francisco, returning Sun, May 3, priced at $279 found 2 hours ago

Sat, May 23 - Tue, Jun 9

BOS

Boston

SFO

San Francisco

$289 Roundtrip, found 5 days ago

$289

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, May 23 from Boston to San Francisco, returning Tue, Jun 9, priced at $289 found 5 days ago

Fri, Apr 24 - Sat, May 2

BOS

Boston

SFO

San Francisco

$296 Roundtrip, found 9 hours ago

$296

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Fri, Apr 24 from Boston to San Francisco, returning Sat, May 2, priced at $296 found 9 hours ago