$49 Cheap Frontier Airlines flights Seattle (SEA) to Denver (DEN)

$49 Cheap Frontier Airlines flights Seattle (SEA) to Denver (DEN)

Prices were available within the past 7 days and start at $49 for one-way flights and $98 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jun 4 - Mon, Jun 8

SEA

Seattle

DEN

Denver

$98 Roundtrip, found 2 hours ago

$98

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Thu, Jun 4 from Seattle to Denver, returning Mon, Jun 8, priced at $98 found 2 hours ago

Thu, Jun 4 - Tue, Jun 9

SEA

Seattle

DEN

Denver

$108 Roundtrip, found 2 hours ago

$108

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Thu, Jun 4 from Seattle to Denver, returning Tue, Jun 9, priced at $108 found 2 hours ago

Sat, May 30 - Tue, Jun 9

SEA

Seattle

DEN

Denver

$118 Roundtrip, found 2 hours ago

$118

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Sat, May 30 from Seattle to Denver, returning Tue, Jun 9, priced at $118 found 2 hours ago

Tue, May 5 - Thu, May 21

SEA

Seattle

DEN

Denver

$134 Roundtrip, found 1 day ago

$134

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, May 5 from Seattle to Denver, returning Thu, May 21, priced at $134 found 1 day ago

Sat, May 30 - Tue, Jun 16

SEA

Seattle

DEN

Denver

$137 Roundtrip, found 1 day ago

$137

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, May 30 from Seattle to Denver, returning Tue, Jun 16, priced at $137 found 1 day ago

Tue, Jun 2 - Tue, Jun 9

SEA

Seattle

DEN

Denver

$143 Roundtrip, found 1 day ago

$143

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jun 2 from Seattle to Denver, returning Tue, Jun 9, priced at $143 found 1 day ago