$159 Cheap Flights from Casper (CPR) to Denver (DEN)

View $159 flight on Fri, May 8, 2026Opens in a new window

Popular airlines from Casper, WY (CPR-Natrona County Intl.) to Denver Intl. Airport (DEN)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Casper to Denver (CPR-DEN)

Prices were available within the past 7 days and start at $159 for one-way flights and $229 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Jun 18 - Sun, Jun 21
CPR
Casper
DEN
Denver
$229 Roundtrip, just found
$229
Roundtrip
just found
Select United flight, departing Thu, Jun 18 from Casper to Denver, returning Sun, Jun 21, priced at $229 just found
United
Sat, May 23 - Sat, May 30
CPR
Casper
DEN
Denver
$236 Roundtrip, found 19 hours ago
$236
Roundtrip
found 19 hours ago
Select United flight, departing Sat, May 23 from Casper to Denver, returning Sat, May 30, priced at $236 found 19 hours ago
United
Wed, May 20 - Tue, May 26
CPR
Casper
DEN
Denver
$241 Roundtrip, found 3 days ago
$241
Roundtrip
found 3 days ago
Select United flight, departing Wed, May 20 from Casper to Denver, returning Tue, May 26, priced at $241 found 3 days ago
United
Sat, May 23 - Sat, May 30
CPR
Casper
DEN
Denver
$242 Roundtrip, found 19 hours ago
$242
Roundtrip
found 19 hours ago
Select United flight, departing Sat, May 23 from Casper to Denver, returning Sat, May 30, priced at $242 found 19 hours ago
United
Thu, May 7 - Mon, May 11
CPR
Casper
DEN
Denver
$244 Roundtrip, found 20 hours ago
$244
Roundtrip
found 20 hours ago
Select United flight, departing Thu, May 7 from Casper to Denver, returning Mon, May 11, priced at $244 found 20 hours ago
United
Wed, May 20 - Tue, May 26
CPR
Casper
DEN
Denver
$247 Roundtrip, found 3 days ago
$247
Roundtrip
found 3 days ago
Select United flight, departing Wed, May 20 from Casper to Denver, returning Tue, May 26, priced at $247 found 3 days ago
United
Sat, May 23 - Sat, May 30
CPR
Casper
DEN
Denver
$249 Roundtrip, found 19 hours ago
$249
Roundtrip
found 19 hours ago
Select United flight, departing Sat, May 23 from Casper to Denver, returning Sat, May 30, priced at $249 found 19 hours ago
United
Wed, Apr 29 - Wed, May 6
CPR
Casper
DEN
Denver
$250 Roundtrip, found 3 days ago
$250
Roundtrip
found 3 days ago
Select United flight, departing Wed, Apr 29 from Casper to Denver, returning Wed, May 6, priced at $250 found 3 days ago
United
Thu, May 7 - Mon, May 11
CPR
Casper
DEN
Denver
$251 Roundtrip, found 20 hours ago
$251
Roundtrip
found 20 hours ago
Select United flight, departing Thu, May 7 from Casper to Denver, returning Mon, May 11, priced at $251 found 20 hours ago
United
Thu, Jun 18 - Sun, Jun 21
CPR
Casper
DEN
Denver
$252 Roundtrip, just found
$252
Roundtrip
just found
Select United flight, departing Thu, Jun 18 from Casper to Denver, returning Sun, Jun 21, priced at $252 just found

Frequently asked questions

How much does a flight from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.) cost?
You can find cheap one-way flights from $159 and cheap return flights from $229 Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.) with Expedia. One-way flights typically cost between $153 and $433, and return flights often range between $169 and $438. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.)?
February is the cheapest month to fly from Casper, WY (CPR) to Denver, CO (DEN), with average return fares around $174. This is about 23% lower than the average price throughout the year, as February generally has lower travel demand. Other budget-friendly months include January and April.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.)?
United operates around 50 direct flights from CPR to DEN every week.
What is the cheapest airline that flies from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.)?
United is one of the cheapest airlines offering nonstop flights from Casper, WY (CPR) to Denver, CO (DEN), with round-trip tickets starting from around $168.39. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.)?
To find a cheap flight from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.)?
The best airline to fly with from Casper, WY (CPR) to Denver, CO (DEN) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, United typically offers the lowest fares. United offers the most daily flights from CPR to DEN, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.)?
The best months to fly from Casper, WY (CPR) to Denver, CO (DEN) are February and April. February is the cheapest month with return flights around $174, while April is popular, providing a good mix of affordability and flight availability.*Prices based on flights available on Expedia in the last year.
How many flights per day from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.)?
You can find approximately 7 nonstop flights per day from Natrona County Intl. (CPR) to Denver Intl. (DEN). For more options, look at flights that include layovers.
What is the earliest flight from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.)?
The earliest flight from Casper (Natrona County Intl.) to Denver (Denver Intl.) typically departs at around 5:15 AM, operated by United Airlines. An early flight like this can help you make the most of your day in Denver. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.)?
The most popular departure times for flights from Casper, WY (CPR) to Denver, CO (DEN) are in the late morning, from 9am to noon. About 27% of passengers prefer this time window. United Airlines offers flights during this window. This timing is popular because it allows travelers to start their day early and arrive in Denver with plenty of time to explore.
How long does it take to fly from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.)?
A nonstop flight from CPR to DEN typically takes around 1 hour 30 minutes, covering approximately 230 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.)?
First class seats are offered on the CPR to DEN route with United Airlines.
How do I earn miles on a Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.) flight with Expedia?
It's easy to earn miles on a Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Denver from Natrona County Intl. (CPR)?
If you're planning to travel to Denver from Natrona County Intl. (CPR), you can fly typically into Denver Intl. (DEN) Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.) at the last minute?
Typically, booking a last minute flight from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.) flight and hotel package?
Securing a Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.) Denver Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.)?
If you booked your Casper, WY (CPR-Natrona County Intl.) to Denver, CO (DEN-Denver Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Natrona County Intl.
Destination airport
Denver Intl.
Airlines serving
United
Roundtrip price
$228
Distance
230 mi
Average flight time
1 hour 28 mins

Book with confidence

Casper to Denver Flights

The cheapest times to fly from Casper to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Casper to Denver are during the month of June. You can find some of the cheapest flights from Casper to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Casper to Denver

Sunday is one of the best days to book for cheap flights from Casper to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Casper to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Casper to Denver in 2026. You can also book with separate airlines for your outbound and return journeys, from $159 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Casper to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Casper to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Casper to Denver Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

Explore a world of travel with Expedia