$54 Cheap Frontier Airlines flights San Francisco (SFO) to Denver (DEN)

$54 Cheap Frontier Airlines flights San Francisco (SFO) to Denver (DEN)

Prices were available within the past 7 days and start at $54 for one-way flights and $108 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jul 29 - Sat, Aug 9

SFO

San Francisco

DEN

Denver

$108 Roundtrip, found 2 hours ago

$108

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Tue, Jul 29 from San Francisco to Denver, returning Sat, Aug 9, priced at $108 found 2 hours ago

Mon, May 19 - Tue, May 20

SFO

San Francisco

DEN

Denver

$112 Roundtrip, found 5 days ago

$112

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, May 19 from San Francisco to Denver, returning Tue, May 20, priced at $112 found 5 days ago

Tue, Jul 29 - Thu, Aug 7

SFO

San Francisco

DEN

Denver

$149 Roundtrip, found 2 hours ago

$149

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Tue, Jul 29 from San Francisco to Denver, returning Thu, Aug 7, priced at $149 found 2 hours ago

Tue, Jul 1 - Wed, Jul 9

SFO

San Francisco

DEN

Denver

$150 Roundtrip, found 1 day ago

$150

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jul 1 from San Francisco to Denver, returning Wed, Jul 9, priced at $150 found 1 day ago

Sat, Aug 2 - Sat, Aug 9

SFO

San Francisco

DEN

Denver

$156 Roundtrip, found 2 hours ago

$156

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Sat, Aug 2 from San Francisco to Denver, returning Sat, Aug 9, priced at $156 found 2 hours ago

Sun, Jul 6 - Wed, Jul 9

SFO

San Francisco

DEN

Denver

$160 Roundtrip, found 1 day ago

$160

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Jul 6 from San Francisco to Denver, returning Wed, Jul 9, priced at $160 found 1 day ago