$45 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 5 - Tue, Oct 14
PDX
Portland Intl.
DEN
Denver Intl.
$250 Roundtrip, found 17 hours ago
$250
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Sun, Oct 5 from Portland Intl. to Denver Intl., returning Tue, Oct 14, priced at $250 found 17 hours ago
Fri, Oct 3 - Wed, Oct 8
PDX
Portland Intl.
COS
Colorado Springs
$456 Roundtrip, found 1 day ago
$456
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 3 from Portland Intl. to Colorado Springs, returning Wed, Oct 8, priced at $456 found 1 day ago

Airfares from $45 One Way, $88 Round Trip from Portland to Castle Rock

Prices starting at $88 for return flights and $45 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.

Sat, Nov 1 - Sat, Nov 8
PDX
Portland
DEN
Denver
$88 Roundtrip, found 7 hours ago
$88
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Sat, Nov 1 from Portland to Denver, returning Sat, Nov 8, priced at $88 found 7 hours ago
Tue, Nov 11 - Sat, Nov 15
PDX
Portland
DEN
Denver
$90 Roundtrip, found 8 hours ago
$90
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Tue, Nov 11 from Portland to Denver, returning Sat, Nov 15, priced at $90 found 8 hours ago
Sat, Nov 1 - Mon, Nov 3
PDX
Portland
DEN
Denver
$98 Roundtrip, found 6 hours ago
$98
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Sat, Nov 1 from Portland to Denver, returning Mon, Nov 3, priced at $98 found 6 hours ago
Tue, Jan 20 - Wed, Jan 21
PDX
Portland
DEN
Denver
$121 Roundtrip, found 6 days ago
$121
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Tue, Jan 20 from Portland to Denver, returning Wed, Jan 21, priced at $121 found 6 days ago
Tue, Jan 20 - Wed, Jan 21
PDX
Portland
DEN
Denver
$141 Roundtrip, found 6 days ago
$141
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Jan 20 from Portland to Denver, returning Wed, Jan 21, priced at $141 found 6 days ago

Castle Rock economy flight packages

Price found within the past 48 hours. Click for updated prices.
Clayton Hotel & Members Club
4.5-star property

Clayton Hotel & Members Club

9.2/10 Wonderful! (296 reviews)

Nov 15 - Nov 17

2 night stay

Portland (PDX) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $537, price is now $390 per person
$390
per person
found 12 hours ago
Very friendly and competent staff. Nicely decorated. Comfortable beds. Everything worked! The in-hotel restaurants are good. Valet parking was not as big of a pain as I expected. The cabinet door covering the fridge felt like it would snap off every time I opened the fridge. The shower door was sticky and noisy when I opened and closed it. It felt like it would break off. There was a lot of alcohol in the room when I arrived. I wish I had been warned so I could have it removed prior to arrival. MOST IMPORTANT: THE ROOMS ARE NOT SOUNDPROOFED despite what the Orbitz description states. My room was over an alley and the garbage truck noise was incredible. I was also awakened by slamming doors and conversations in the hallway. I picked this hotel specifically because they said their rooms are soundproofed so I was pretty upset. It is just a typical hotel noise-wise.

Reviewed on Mar 26, 2025

Renaissance Denver Hotel & Conference Center
4.0-star property

Renaissance Denver Hotel & Conference Center

8.4/10 Very Good! (1,569 reviews)

Nov 13 - Nov 18

5 night stay

Portland (PDX) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $578, price is now $422 per person
$422
per person
found 1 day ago
Property is dated but well kept. Staff are excellent and helpful. Not an area where I would go for a walk outside of the hotel.

Reviewed on Aug 18, 2025

The Rally Hotel at McGregor Square
4.0-star property

The Rally Hotel at McGregor Square

9.6/10 Exceptional! (1,465 reviews)

Nov 20 - Nov 23

3 night stay

Portland (PDX) to Denver (DEN)

Alaska Airlines • Roundtrip • Coach
Price was $640, price is now $470 per person
$470
per person
found 1 day ago
Awesome Hotel if going to the ball park.

Reviewed on Sep 10, 2025

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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
989 mi
Direct Flight Airlines
Alaska Airlines, Frontier Airlines, Southwest Airlines, Hawaiian Airlines, Lufthansa, United Airlines
Earliest Flight Arrival
2:34PM UTC
Latest Flight Arrival
3:55AM UTC

Portland to Castle Rock

Orbitz gives you great deals on your flights from Portland to Castle Rock. If you also need a discount car rental or a cheap hotel room after you arrived at your destination, Orbitz has you covered.

We Offer Great Travel Deals and Discounts

When you book flights from Portland to Castle Rock with Orbitz for, you can be assured that you are getting the lowest price possible. Orbitz works constantly with our airline partners to ensure guaranteed low prices on Portland to Castle Rock flights for your trip—whether you are traveling for business or for fun with your family.

Enjoy Savings on Last-Minute Flights

If you are looking for a discount price on last-minute flights from Portland to Castle Rock, chances are that Orbitz can offer you a deal that will save you lots of money. Whether you just want to get away for the weekend or go on a vacation lasting weeks, Orbitz can help you find the best deals on Portland to Castle Rock flights that fit your budget and your itinerary for the perfect trip.

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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.