Flights from Portland to Cascade

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.

Fri, Aug 15 - Tue, Aug 19

PDX

Portland Intl.

DEN

Denver Intl.

$119 Roundtrip, found 6 days ago

$119

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Aug 15 from Portland Intl. to Denver Intl., returning Tue, Aug 19, priced at $119 found 6 days ago

Sat, Aug 30 - Sat, Aug 30

PDX

Portland Intl.

DEN

Denver Intl.

$120 Roundtrip, found 6 days ago

$120

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 30 from Portland Intl. to Denver Intl., returning Sat, Aug 30, priced at $120 found 6 days ago

Tue, Aug 12 - Tue, Aug 19

PDX

Portland Intl.

DEN

Denver Intl.

$121 Roundtrip, found 5 days ago

$121

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Aug 12 from Portland Intl. to Denver Intl., returning Tue, Aug 19, priced at $121 found 5 days ago

Sat, Aug 30 - Thu, Sep 4

PDX

Portland Intl.

DEN

Denver Intl.

$126 Roundtrip, found 6 days ago

$126

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 30 from Portland Intl. to Denver Intl., returning Thu, Sep 4, priced at $126 found 6 days ago

Tue, Aug 12 - Mon, Aug 18

PDX

Portland Intl.

DEN

Denver Intl.

$126 Roundtrip, found 5 days ago

$126

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Aug 12 from Portland Intl. to Denver Intl., returning Mon, Aug 18, priced at $126 found 5 days ago

Thu, Aug 14 - Mon, Aug 18

PDX

Portland Intl.

DEN

Denver Intl.

$131 Roundtrip, found 5 days ago

$131

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Thu, Aug 14 from Portland Intl. to Denver Intl., returning Mon, Aug 18, priced at $131 found 5 days ago

Sat, Aug 30 - Fri, Sep 5

PDX

Portland Intl.

DEN

Denver Intl.

$134 Roundtrip, found 6 days ago

$134

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 30 from Portland Intl. to Denver Intl., returning Fri, Sep 5, priced at $134 found 6 days ago

Mon, Aug 25 - Fri, Sep 5

PDX

Portland Intl.

DEN

Denver Intl.

$140 Roundtrip, found 6 days ago

$140

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Mon, Aug 25 from Portland Intl. to Denver Intl., returning Fri, Sep 5, priced at $140 found 6 days ago

Fri, Aug 29 - Fri, Sep 5

PDX

Portland Intl.

DEN

Denver Intl.

$148 Roundtrip, found 6 days ago

$148

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Aug 29 from Portland Intl. to Denver Intl., returning Fri, Sep 5, priced at $148 found 6 days ago

Fri, Aug 15 - Tue, Aug 19

PDX

Portland Intl.

DEN

Denver Intl.

$160 Roundtrip, found 6 days ago

$160

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Aug 15 from Portland Intl. to Denver Intl., returning Tue, Aug 19, priced at $160 found 6 days ago

Mon, Aug 11 - Mon, Aug 18

PDX

Portland Intl.

DEN

Denver Intl.

$166 Roundtrip, found 5 days ago

$166

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Aug 11 from Portland Intl. to Denver Intl., returning Mon, Aug 18, priced at $166 found 5 days ago

Tue, Aug 19 - Sat, Aug 23

PDX

Portland Intl.

DEN

Denver Intl.

$172 Roundtrip, found 20 hours ago

$172

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Tue, Aug 19 from Portland Intl. to Denver Intl., returning Sat, Aug 23, priced at $172 found 20 hours ago

Mon, Aug 11 - Tue, Aug 19

PDX

Portland Intl.

DEN

Denver Intl.

$183 Roundtrip, found 5 days ago

$183

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Aug 11 from Portland Intl. to Denver Intl., returning Tue, Aug 19, priced at $183 found 5 days ago

Thu, Aug 7 - Tue, Aug 12

PDX

Portland Intl.

DEN

Denver Intl.

$183 Roundtrip, found 1 day ago

$183

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Aug 7 from Portland Intl. to Denver Intl., returning Tue, Aug 12, priced at $183 found 1 day ago

Mon, Aug 11 - Mon, Aug 18

PDX

Portland Intl.

DEN

Denver Intl.

$185 Roundtrip, found 5 days ago

$185

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Aug 11 from Portland Intl. to Denver Intl., returning Mon, Aug 18, priced at $185 found 5 days ago

Thu, Aug 21 - Tue, Aug 26

PDX

Portland Intl.

DEN

Denver Intl.

$187 Roundtrip, found 1 day ago

$187

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Thu, Aug 21 from Portland Intl. to Denver Intl., returning Tue, Aug 26, priced at $187 found 1 day ago

Tue, Aug 19 - Sat, Aug 23

PDX

Portland Intl.

DEN

Denver Intl.

$197 Roundtrip, found 20 hours ago

$197

Roundtrip

found 20 hours ago

Select United flight, departing Tue, Aug 19 from Portland Intl. to Denver Intl., returning Sat, Aug 23, priced at $197 found 20 hours ago

Tue, Aug 19 - Sat, Aug 23

PDX

Portland Intl.

DEN

Denver Intl.

$217 Roundtrip, found 20 hours ago

$217

Roundtrip

found 20 hours ago

Select Delta flight, departing Tue, Aug 19 from Portland Intl. to Denver Intl., returning Sat, Aug 23, priced at $217 found 20 hours ago

Tue, Aug 19 - Sat, Aug 23

PDX

Portland Intl.

DEN

Denver Intl.

$237 Roundtrip, found 20 hours ago

$237

Roundtrip

found 20 hours ago

Select Alaska Airlines flight, departing Tue, Aug 19 from Portland Intl. to Denver Intl., returning Sat, Aug 23, priced at $237 found 20 hours ago

Tue, Aug 19 - Sun, Aug 24

PDX

Portland Intl.

DEN

Denver Intl.

$247 Roundtrip, found 1 day ago

$247

Roundtrip

found 1 day ago

Select American Airlines flight, departing Tue, Aug 19 from Portland Intl. to Denver Intl., returning Sun, Aug 24, priced at $247 found 1 day ago