Flights from Seattle to Windsor

Cheapest flights from Seattle

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 19 - Thu, Aug 21

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$118 Roundtrip, found 6 days ago

$118

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Aug 19 from Seattle - Tacoma Intl. to Denver Intl., returning Thu, Aug 21, priced at $118 found 6 days ago

Wed, Sep 3 - Sun, Sep 7

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$126 Roundtrip, found 6 days ago

$126

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Sep 3 from Seattle - Tacoma Intl. to Denver Intl., returning Sun, Sep 7, priced at $126 found 6 days ago

Sun, Aug 31 - Sun, Sep 7

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$132 Roundtrip, found 6 days ago

$132

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sun, Aug 31 from Seattle - Tacoma Intl. to Denver Intl., returning Sun, Sep 7, priced at $132 found 6 days ago

Wed, Sep 3 - Thu, Sep 11

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$135 Roundtrip, found 6 days ago

$135

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Sep 3 from Seattle - Tacoma Intl. to Denver Intl., returning Thu, Sep 11, priced at $135 found 6 days ago

Thu, Aug 21 - Mon, Aug 25

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$139 Roundtrip, found 6 days ago

$139

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Aug 21 from Seattle - Tacoma Intl. to Denver Intl., returning Mon, Aug 25, priced at $139 found 6 days ago

Sat, Aug 16 - Mon, Aug 25

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$140 Roundtrip, found 6 days ago

$140

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 16 from Seattle - Tacoma Intl. to Denver Intl., returning Mon, Aug 25, priced at $140 found 6 days ago

Sun, Aug 31 - Thu, Sep 11

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$141 Roundtrip, found 6 days ago

$141

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sun, Aug 31 from Seattle - Tacoma Intl. to Denver Intl., returning Thu, Sep 11, priced at $141 found 6 days ago

Thu, Aug 21 - Fri, Aug 22

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$146 Roundtrip, found 6 days ago

$146

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Aug 21 from Seattle - Tacoma Intl. to Denver Intl., returning Fri, Aug 22, priced at $146 found 6 days ago

Sat, Aug 16 - Thu, Aug 21

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$147 Roundtrip, found 6 days ago

$147

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 16 from Seattle - Tacoma Intl. to Denver Intl., returning Thu, Aug 21, priced at $147 found 6 days ago

Mon, Aug 18 - Mon, Aug 25

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$154 Roundtrip, found 6 days ago

$154

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Mon, Aug 18 from Seattle - Tacoma Intl. to Denver Intl., returning Mon, Aug 25, priced at $154 found 6 days ago

Tue, Sep 30 - Tue, Oct 7

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$157 Roundtrip, found 1 day ago

$157

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Tue, Sep 30 from Seattle - Tacoma Intl. to Denver Intl., returning Tue, Oct 7, priced at $157 found 1 day ago

Tue, Sep 30 - Wed, Oct 1

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$157 Roundtrip, found 1 day ago

$157

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Tue, Sep 30 from Seattle - Tacoma Intl. to Denver Intl., returning Wed, Oct 1, priced at $157 found 1 day ago

Wed, Sep 3 - Tue, Sep 9

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$157 Roundtrip, found 15 hours ago

$157

Roundtrip

found 15 hours ago

Select United flight, departing Wed, Sep 3 from Seattle - Tacoma Intl. to Denver Intl., returning Tue, Sep 9, priced at $157 found 15 hours ago

Wed, Sep 3 - Tue, Sep 9

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$157 Roundtrip, found 15 hours ago

$157

Roundtrip

found 15 hours ago

Select Delta flight, departing Wed, Sep 3 from Seattle - Tacoma Intl. to Denver Intl., returning Tue, Sep 9, priced at $157 found 15 hours ago

Mon, Aug 18 - Thu, Aug 21

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$161 Roundtrip, found 6 days ago

$161

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Mon, Aug 18 from Seattle - Tacoma Intl. to Denver Intl., returning Thu, Aug 21, priced at $161 found 6 days ago

Sat, Aug 16 - Sun, Aug 17

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$162 Roundtrip, found 6 days ago

$162

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 16 from Seattle - Tacoma Intl. to Denver Intl., returning Sun, Aug 17, priced at $162 found 6 days ago

Thu, Aug 21 - Fri, Aug 29

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$163 Roundtrip, found 6 days ago

$163

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Aug 21 from Seattle - Tacoma Intl. to Denver Intl., returning Fri, Aug 29, priced at $163 found 6 days ago

Sat, Aug 16 - Fri, Aug 29

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$164 Roundtrip, found 6 days ago

$164

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 16 from Seattle - Tacoma Intl. to Denver Intl., returning Fri, Aug 29, priced at $164 found 6 days ago

Wed, Sep 3 - Tue, Sep 9

SEA

Seattle - Tacoma Intl.

DEN

Denver Intl.

$187 Roundtrip, found 15 hours ago

$187

Roundtrip

found 15 hours ago

Select American Airlines flight, departing Wed, Sep 3 from Seattle - Tacoma Intl. to Denver Intl., returning Tue, Sep 9, priced at $187 found 15 hours ago

Fri, Aug 8 - Mon, Aug 11

PAE

Seattle Paine Field Intl. Airport

DEN

Denver Intl.

$248 Roundtrip, found 1 day ago

$248

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Seattle Paine Field Intl. Airport to Denver Intl., returning Mon, Aug 11, priced at $248 found 1 day ago