Flights from Portland to Windsor

Cheapest flights from Portland

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, Jun 10 - Sat, Jun 14

PDX

Portland Intl.

DEN

Denver Intl.

$134 Roundtrip, found 1 day ago

$134

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jun 10 from Portland Intl. to Denver Intl., returning Sat, Jun 14, priced at $134 found 1 day ago

Tue, May 20 - Tue, May 27

PDX

Portland Intl.

DEN

Denver Intl.

$144 Roundtrip, found 3 days ago

$144

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Tue, May 20 from Portland Intl. to Denver Intl., returning Tue, May 27, priced at $144 found 3 days ago

Tue, Jul 15 - Tue, Jul 22

PDX

Portland Intl.

DEN

Denver Intl.

$148 Roundtrip, found 3 days ago

$148

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Tue, Jul 15 from Portland Intl. to Denver Intl., returning Tue, Jul 22, priced at $148 found 3 days ago

Sat, Jun 14 - Tue, Jun 17

PDX

Portland Intl.

DEN

Denver Intl.

$156 Roundtrip, found 1 day ago

$156

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Jun 14 from Portland Intl. to Denver Intl., returning Tue, Jun 17, priced at $156 found 1 day ago

Thu, Jun 12 - Tue, Jun 17

PDX

Portland Intl.

DEN

Denver Intl.

$159 Roundtrip, found 1 day ago

$159

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Jun 12 from Portland Intl. to Denver Intl., returning Tue, Jun 17, priced at $159 found 1 day ago

Wed, Jun 11 - Mon, Jun 16

PDX

Portland Intl.

DEN

Denver Intl.

$160 Roundtrip, found 1 day ago

$160

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Portland Intl. to Denver Intl., returning Mon, Jun 16, priced at $160 found 1 day ago

Sun, May 25 - Tue, May 27

PDX

Portland Intl.

DEN

Denver Intl.

$164 Roundtrip, found 3 days ago

$164

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sun, May 25 from Portland Intl. to Denver Intl., returning Tue, May 27, priced at $164 found 3 days ago

Mon, May 26 - Tue, May 27

PDX

Portland Intl.

DEN

Denver Intl.

$165 Roundtrip, found 3 days ago

$165

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, May 26 from Portland Intl. to Denver Intl., returning Tue, May 27, priced at $165 found 3 days ago

Mon, Jul 14 - Tue, Jul 22

PDX

Portland Intl.

DEN

Denver Intl.

$168 Roundtrip, found 3 days ago

$168

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Jul 14 from Portland Intl. to Denver Intl., returning Tue, Jul 22, priced at $168 found 3 days ago

Fri, May 23 - Wed, May 28

PDX

Portland Intl.

DEN

Denver Intl.

$170 Roundtrip, found 1 day ago

$170

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, May 23 from Portland Intl. to Denver Intl., returning Wed, May 28, priced at $170 found 1 day ago

Tue, Jul 15 - Tue, Jul 22

PDX

Portland Intl.

DEN

Denver Intl.

$173 Roundtrip, found 3 days ago

$173

Roundtrip

found 3 days ago

Select Alaska Airlines flight, departing Tue, Jul 15 from Portland Intl. to Denver Intl., returning Tue, Jul 22, priced at $173 found 3 days ago

Tue, May 20 - Mon, May 26

PDX

Portland Intl.

DEN

Denver Intl.

$175 Roundtrip, found 3 days ago

$175

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Tue, May 20 from Portland Intl. to Denver Intl., returning Mon, May 26, priced at $175 found 3 days ago

Sat, Jun 28 - Sun, Jul 6

PDX

Portland Intl.

DEN

Denver Intl.

$178 Roundtrip, found 2 days ago

$178

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Jun 28 from Portland Intl. to Denver Intl., returning Sun, Jul 6, priced at $178 found 2 days ago

Thu, Jun 12 - Tue, Jun 17

PDX

Portland Intl.

DEN

Denver Intl.

$181 Roundtrip, found 1 day ago

$181

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Jun 12 from Portland Intl. to Denver Intl., returning Tue, Jun 17, priced at $181 found 1 day ago

Wed, Jun 11 - Mon, Jun 16

PDX

Portland Intl.

DEN

Denver Intl.

$182 Roundtrip, found 1 day ago

$182

Roundtrip

found 1 day ago

Select United flight, departing Wed, Jun 11 from Portland Intl. to Denver Intl., returning Mon, Jun 16, priced at $182 found 1 day ago

Tue, Jul 15 - Tue, Jul 22

PDX

Portland Intl.

DEN

Denver Intl.

$183 Roundtrip, found 3 days ago

$183

Roundtrip

found 3 days ago

Select Delta flight, departing Tue, Jul 15 from Portland Intl. to Denver Intl., returning Tue, Jul 22, priced at $183 found 3 days ago

Wed, Jun 4 - Mon, Jun 9

PDX

Portland Intl.

DEN

Denver Intl.

$187 Roundtrip, found 1 day ago

$187

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Wed, Jun 4 from Portland Intl. to Denver Intl., returning Mon, Jun 9, priced at $187 found 1 day ago

Fri, May 23 - Wed, May 28

PDX

Portland Intl.

DEN

Denver Intl.

$187 Roundtrip, found 1 day ago

$187

Roundtrip

found 1 day ago

Select United flight, departing Fri, May 23 from Portland Intl. to Denver Intl., returning Wed, May 28, priced at $187 found 1 day ago

Wed, Jun 4 - Mon, Jun 9

PDX

Portland Intl.

DEN

Denver Intl.

$207 Roundtrip, found 1 day ago

$207

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Jun 4 from Portland Intl. to Denver Intl., returning Mon, Jun 9, priced at $207 found 1 day ago

Wed, Jun 11 - Mon, Jun 16

PDX

Portland Intl.

DEN

Denver Intl.

$227 Roundtrip, found 1 day ago

$227

Roundtrip

found 1 day ago

Select American Airlines flight, departing Wed, Jun 11 from Portland Intl. to Denver Intl., returning Mon, Jun 16, priced at $227 found 1 day ago