Cheap flights To Castle Rock (DEN) from $23

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Cheap Flights to Castle Rock from $23 One Way, $51 Round Trip

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Thu, Apr 16 - Tue, Apr 21
PDX
Portland Intl.
DEN
Denver Intl.
$51 Roundtrip, just found
$51
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Apr 16 from Portland Intl. to Denver Intl., returning Tue, Apr 21, priced at $51 just found
Sun, Apr 26 - Fri, May 1
PDX
Portland Intl.
DEN
Denver Intl.
$56 Roundtrip, just found
$56
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, Apr 26 from Portland Intl. to Denver Intl., returning Fri, May 1, priced at $56 just found
Wed, Apr 22 - Tue, Apr 28
PDX
Portland Intl.
DEN
Denver Intl.
$67 Roundtrip, found 2 days ago
$67
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Wed, Apr 22 from Portland Intl. to Denver Intl., returning Tue, Apr 28, priced at $67 found 2 days ago
Thu, May 7 - Sun, May 10
PDX
Portland Intl.
DEN
Denver Intl.
$72 Roundtrip, found 18 hours ago
$72
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Thu, May 7 from Portland Intl. to Denver Intl., returning Sun, May 10, priced at $72 found 18 hours ago
Mon, Mar 9 - Thu, Mar 12
PDX
Portland Intl.
DEN
Denver Intl.
$73 Roundtrip, found 5 days ago
$73
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Mon, Mar 9 from Portland Intl. to Denver Intl., returning Thu, Mar 12, priced at $73 found 5 days ago
Thu, Mar 12 - Mon, Mar 16
PDX
Portland Intl.
DEN
Denver Intl.
$77 Roundtrip, found 3 hours ago
$77
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Thu, Mar 12 from Portland Intl. to Denver Intl., returning Mon, Mar 16, priced at $77 found 3 hours ago
Mon, Mar 9 - Mon, Mar 16
MKE
General Mitchell Intl.
DEN
Denver Intl.
$130 Roundtrip, found 19 hours ago
$130
Roundtrip
found 19 hours ago
Select Frontier Airlines flight, departing Mon, Mar 9 from General Mitchell Intl. to Denver Intl., returning Mon, Mar 16, priced at $130 found 19 hours ago
Tue, May 5 - Tue, May 5
PDX
Portland Intl.
DEN
Denver Intl.
$132 Roundtrip, found 2 days ago
$132
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, May 5 from Portland Intl. to Denver Intl., returning Tue, May 5, priced at $132 found 2 days ago
Thu, Feb 19 - Sat, Feb 28
RNO
Reno-Tahoe Intl.
DEN
Denver Intl.
$139 Roundtrip, found 6 days ago
$139
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Feb 19 from Reno-Tahoe Intl. to Denver Intl., returning Sat, Feb 28, priced at $139 found 6 days ago
Sat, Feb 28 - Sat, Mar 7
PDX
Portland Intl.
DEN
Denver Intl.
$140 Roundtrip, found 10 hours ago
$140
Roundtrip
found 10 hours ago
Select Southwest Airlines flight, departing Sat, Feb 28 from Portland Intl. to Denver Intl., returning Sat, Mar 7, priced at $140 found 10 hours ago

Castle Rock Flight Information

Traveling To
Castle Rock
Destination Airport IATA Code
DEN
Number of Airlines Serving
Airlines
Frontier Airlines, Southwest Airlines, United, Alaska Airlines
Flight Price
$51
Earliest Departing Flight
Latest Departing Flight

Book Your Flight & Hotel Together & Save

Castle Rock economy flight packages

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

Hotel Polaris

Mar 27 - Mar 31

4 night stay

Atlanta (ATL) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $470, price is now $287 per person
$287
per person
found 1 day ago
Holiday Inn Express Denver Downtown by IHG
3.0-star property

Holiday Inn Express Denver Downtown by IHG

Mar 19 - Mar 24

5 night stay

Atlanta (ATL) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $591, price is now $347 per person
$347
per person
found 1 day ago
The Village at Steamboat
3.0-star property

The Village at Steamboat

Mar 8 - Mar 13

5 night stay

Newark Liberty Intl. Airport (EWR) to Denver (DEN)

United • Roundtrip • Coach
Save 100% on your flight
Price was $1,695, price is now $1,118 per person
$1,118
per person
found 1 day ago
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Castle Rock first class flight packages

Price found within the past 48 hours. Click for updated prices.
Laurelwood Condominiums
3.0-star property

Laurelwood Condominiums

9.2/10 Wonderful! (1,425 reviews)

Mar 17 - Mar 19

2 night stay

Detroit (DTW) to Denver (DEN)

United • Non-stop roundtrip • FirstClass
Price was $1,824, price is now $1,615 per person
$1,615
per person
found 1 day ago
Close to skiing,nice access

Reviewed on Dec 12, 2025

Hotel Jerome, Auberge Collection
5.0-star property

Hotel Jerome, Auberge Collection

9.6/10 Exceptional! (445 reviews)

Mar 17 - Mar 19

2 night stay

Detroit (DTW) to Denver (DEN)

United • Non-stop roundtrip • FirstClass
Price was $2,994, price is now $2,633 per person
$2,633
per person
found 1 day ago
Beautiful hotel. Very helpful staff. Great location.

Reviewed on May 28, 2019

The Gant
4.0-star property

The Gant

9.4/10 Exceptional! (934 reviews)

Mar 17 - Mar 19

2 night stay

Detroit (DTW) to Denver (DEN)

United • Non-stop roundtrip • FirstClass
Price was $2,149, price is now $1,907 per person
$1,907
per person
found 1 day ago
I spent a week here. I look forward to returning again.

Reviewed on Oct 6, 2024

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Castle Rock

Are you in the mood for a cruise? Shop Orbitz today for cheap cruises and flights to Castle Rock. Our award-winning cruise site features exclusive offers, information for first-timers and top destinations and activities. Make discount domestic and international travel plans in an instant with cutting-edge mobile tools from Orbitz.

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First-Timers

Are you and your family cruise newbies? Orbitz offers Cruising 101 and Cruise FAQ to answer any questions you may have. Book your cruise and air travel with Orbitz On the Go for greater savings on Castle Rock flights.

Ports and Play

Be sure to check our cruise page for free shore excursions, onboard spending, balcony upgrades and other perks. Orbitz offers last-minute, luxury, weekend and summer cruises. You can even designate which port you want to sail from and pre-book on-shore activities. Get there on the cheap with discounts on flights to Castle Rock and Castle Rock flights. Get more bang for your travel buck at Orbitz.

Frequently asked questions

Which airlines fly to Castle Rock?
With 20 airlines operating services to Denver Intl. Airport (DEN), a major entrance point to Castle Rock, you have loads of options. Find a fabulous deal among these renowned international carriers that'll fly you to this city:

  • United Airlines - 269 flights to Castle Rock per month
  • Southwest Airlines - 88 flights to Castle Rock per month
  • Air Canada - 83 flights to Castle Rock per month

How much is a flight to Castle Rock?
Lots of huge deals were going begging this week, with round-trip flights to Castle Rock ranging from $51 to $140. But it was travelers starting their trip from Portland (PDX) who nabbed the best bargains. One-way tickets to Castle Rock fell to just $23.
How to book the cheapest flight to Castle Rock?
Snapping up cheap flights to Castle Rock is as easy as booking your ticket with Orbitz. But if you'd like to make sure you're getting the best flight deals around, here are a few tips your budget will love:

  • Departing from or landing at other airports can often help you save on airfares. Type in your preferred departure and arrival airports. Next, select the 'Nearby airports' function below the form fields to look through your options.
  • If you're flexible with your schedule, click on the 'Show flexible dates' link. It'll bring up flight deals for the days around your selected departure. Airfares often vary depending on the day of the week.
  • Select 'Show options' to refine your search results. You can choose your preferred airline and seating class here. Under 'Sort & Filter' to the left, you can even specify whether you want to fly in the morning, afternoon or evening.
  • Once you've worked out your travel dates, book your flight. Ticket prices generally increase as the departure date gets closer.
  • Consider combining your flights, hotels and car rental into a package deal to save cash.
  • Whenever possible, avoid flying in the most popular seasons. Airfares are usually at their most expensive during summer, school breaks and around other vacation times like Thanksgiving and Christmas.

What is the best time to book a flight to Castle Rock?
Pick up a bargain and secure your seats to Castle Rock in January. If you've missed this month, fear not. February and August often have low airfares available, too. Just be careful you don't sleep on a sale — cheap flights pop up and disappear in the click of a mouse!
What day of the week is the cheapest to book a flight to Castle Rock?
Make a booking on a Tuesday, Wednesday or Saturday. Typically, these are the cheapest days of the week to purchase seats to Castle Rock. The getaway of your dreams starts with an incredible flight deal!
What is the cheapest day of the week to fly to Castle Rock?
According to Orbitz data from 2020, Monday is generally the best day of the week for cheap flights to Castle Rock. Tuesday also offers more affordable fares, whereas Saturday has the highest ticket rates. Although flying out at the weekend may be easier to organize, you'll have more money to play with if you jet out early in the week.
What is the cheapest month to fly to Castle Rock?
If you have some wiggle room with your travel plans, think about jetting off sometime in August. Orbitz data shows that this is generally the best month to travel if you want cheap flights to Castle Rock. As you would imagine, airfares climb in June and flights get snapped up fast.
Which airlines allow free cancellation?
We understand that plans can change and flexibility matters. That's why you can search for flights that include free cancellation and no change fees on Orbitz. Just click on "Filter by flexible change policies" and we'll find you fares with more flexibility than a lip balm left in the sun!
What do I need for the flight to Castle Rock?
There's nothing more exciting than jetting somewhere new, but it's smart to be prepared. The following handy tips will help get your journey off to a flying start:

  • Your travel documents are the most important items you'll need to take on your flight to Castle Rock. To avoid any issues when checking in, make sure that the personal information on your ticket corresponds with your government-issued ID.
  • Make time fly by even quicker on your short flight by packing the right things. Think snacks, a water bottle and entertainment. If you'd like your trip to Castle Rock to go quietly, put some noise-canceling headphones or earplugs into your carry-on bag as well.
  • It can get chilly on the plane. If you don't like the idea of shivering your way through the flight, bring an extra layer.

How do I get cheap first-class/business deals to Castle Rock?
Savvy travelers have mastered the art of finding first or business-class airfares to Castle Rock without the hefty price tag. Take their lead with these useful tips:

  • Be more flexible with your travel dates and hold out for big sales on first or business-class airfares.
  • Many low-cost airlines these days have terrific business-class seating for a reasonable price.
  • Make the most of your airline's flight rewards program and use points to upgrade your seat. You can also bid for an upgrade in online auctions.

What is the best time to go to Castle Rock?
Castle Rock is busy in June, July and August. If you're planning to visit during these months, it would be a good idea to book ahead of time to ensure you get the most rewarding deals. Like to know what the summer's like in Castle Rock? Average daily temperatures normally float between 55 ºF and 80 ºF. Like most of the Northern Hemisphere, the summer season kicks off June 20 here.
Travel tips for Castle Rock

  • Get into your comfy sneakers and discover this bustling city on foot. There are lots of big-name attractions you shouldn't miss, such as Outlets at Castle Rock and Red Hawk Ridge Golf Course.
  • You'll discover fun day trip adventures a short drive from Castle Rock's center. Check out Ball Arena first and then make tracks to Red Rocks Amphitheater.
  • Like to see the sights of Denver's other great cities? Pick up a car rental and road-trip your way to Golden or Arvada — or both! With your own ride, discovering those off-radar destinations will also be a cinch.

More to Explore

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.