$66 Cheap Frontier Airlines flights Denver (DEN) to Seattle (SEA)

$66 Cheap Frontier Airlines flights Denver (DEN) to Seattle (SEA)

Prices were available within the past 7 days and start at $66 for one-way flights and $120 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 16 - Wed, Oct 1

DEN

Denver

SEA

Seattle

$120 Roundtrip, found 5 days ago

$120

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Sep 16 from Denver to Seattle, returning Wed, Oct 1, priced at $120 found 5 days ago

Sun, Sep 14 - Wed, Oct 1

DEN

Denver

SEA

Seattle

$126 Roundtrip, found 5 days ago

$126

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, Sep 14 from Denver to Seattle, returning Wed, Oct 1, priced at $126 found 5 days ago

Sun, Sep 14 - Mon, Sep 29

DEN

Denver

SEA

Seattle

$132 Roundtrip, found 5 days ago

$132

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, Sep 14 from Denver to Seattle, returning Mon, Sep 29, priced at $132 found 5 days ago

Wed, Sep 17 - Wed, Oct 1

DEN

Denver

SEA

Seattle

$135 Roundtrip, found 5 days ago

$135

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Sep 17 from Denver to Seattle, returning Wed, Oct 1, priced at $135 found 5 days ago

Wed, Sep 17 - Mon, Sep 29

DEN

Denver

SEA

Seattle

$141 Roundtrip, found 5 days ago

$141

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Wed, Sep 17 from Denver to Seattle, returning Mon, Sep 29, priced at $141 found 5 days ago

Tue, Sep 16 - Tue, Sep 30

DEN

Denver

SEA

Seattle

$147 Roundtrip, found 1 day ago

$147

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Sep 16 from Denver to Seattle, returning Tue, Sep 30, priced at $147 found 1 day ago