$74 Cheap flight deals from Portland (PDX) to Castle Rock (DEN)

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This Weekend's Flight Deals from Portland to Castle Rock

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Oct 25 - Thu, Oct 29
PDX
Portland Intl.
DEN
Denver Intl.
$405 Roundtrip, found 1 day ago
$405
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, Oct 25 from Portland Intl. to Denver Intl., returning Thu, Oct 29, priced at $405 found 1 day ago

Airfares from $74 One Way, $120 Round Trip from Portland to Castle Rock

Prices starting at $120 for return flights and $74 for one-way flights to Castle Rock were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Dec 13 - Thu, Dec 17
PDX
Portland
DEN
Denver
$120 Roundtrip, found 3 days ago
$120
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sun, Dec 13 from Portland to Denver, returning Thu, Dec 17, priced at $120 found 3 days ago
Tue, Feb 2 - Tue, Feb 9
PDX
Portland
DEN
Denver
$148 Roundtrip, found 4 hours ago
$148
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Tue, Feb 2 from Portland to Denver, returning Tue, Feb 9, priced at $148 found 4 hours ago
Thu, Nov 12 - Tue, Nov 17
PDX
Portland
DEN
Denver
$237 Roundtrip, found 1 hour ago
$237
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Nov 12 from Portland to Denver, returning Tue, Nov 17, priced at $237 found 1 hour ago
Mon, Dec 14 - Tue, Dec 15
PDX
Portland
DEN
Denver
$237 Roundtrip, found 8 hours ago
$237
Roundtrip
found 8 hours ago
Select Southwest Airlines flight, departing Mon, Dec 14 from Portland to Denver, returning Tue, Dec 15, priced at $237 found 8 hours ago
Thu, Nov 12 - Tue, Nov 17
PDX
Portland
DEN
Denver
$257 Roundtrip, found 1 hour ago
$257
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Nov 12 from Portland to Denver, returning Tue, Nov 17, priced at $257 found 1 hour ago

Castle Rock economy flight packages

Price found within the past 48 hours. Click for updated prices.
Hotel Teatro
4.5-star property

Hotel Teatro

9.2/10 Wonderful! (1,462 reviews)

Dec 3 - Dec 8

5 night stay

Portland (PDX) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Price was $810, price is now $513 per person
$513
per person
found 1 day ago
Nice hotel! Clean and comfortable rooms, friendly staff and great location.

Reviewed on Oct 22, 2026

The Brown Palace Hotel and Spa, Autograph Collection
4.5-star property

The Brown Palace Hotel and Spa, Autograph Collection

8.4/10 Very Good! (1,008 reviews)

Dec 3 - Dec 8

5 night stay

Portland (PDX) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Price was $878, price is now $534 per person
$534
per person
found 1 day ago
My first time ever in Colorado and my stay was wonderful service from the moment I arrived at the doors. The door men (valet) were helpful and the front desk staff provided the best customer service. I added notes about celebrating my sister's birthday in my reservation and the staff made it memorable from the time we arrived and even provided a sweet treat for her. The hotel is absolutely stunning. The beds were comfortable and the pillows were just right. Everything was great.... the cleaning staff checked our room daily and provided fresh towels and made our bed. Afternoon Tea was a delight and my service at The ship Tavern was impeccable. I travel a lot and great service is hard to come by these days but Bravo to this staff for making my first impression of Denver a great one.

Reviewed on Oct 20, 2026

The Maven Hotel at Dairy Block
4.5-star property

The Maven Hotel at Dairy Block

9.4/10 Exceptional! (1,113 reviews)

Dec 3 - Dec 8

5 night stay

Portland (PDX) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Price was $1,014, price is now $696 per person
$696
per person
found 1 day ago
I thoroughly enjoyed my stay at The Maven Hotel during my recent Denver getaway! The hotel was exceptionally clean, and the location couldn’t have been more convenient. Everything we needed, from restaurants and shopping to entertainment, was easily accessible. Our room was spacious, comfortable, and absolutely perfect for our girls’ getaway. The overall atmosphere made our stay even more enjoyable. I would definitely recommend The Maven to anyone visiting Denver and would happily stay here again

Reviewed on Oct 20, 2026

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More About Flying To Castle Rock from Portland

Route Information for Flights from Portland to Castle Rock

Origin Airport IATA Code
PDX
Destination Airport IATA Code
DEN
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

Portland to Castle Rock

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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.