$129 Cheap Flights from Denver (DEN) to Casper (CPR)

View $129 flight on Sun, Mar 29, 2026Opens in a new window

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

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Cheap Flights from Denver to Casper (DEN-CPR)

Prices were available within the past 7 days and start at $129 for one-way flights and $169 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Jun 20 - Wed, Jun 24
DEN
Denver
CPR
Casper
$169 Roundtrip, found 7 hours ago
$169
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Jun 20 from Denver to Casper, returning Wed, Jun 24, priced at $169 found 7 hours ago
United
Wed, Mar 4 - Wed, Mar 11
DEN
Denver
CPR
Casper
$175 Roundtrip, found 6 days ago
$175
Roundtrip
found 6 days ago
Select United flight, departing Wed, Mar 4 from Denver to Casper, returning Wed, Mar 11, priced at $175 found 6 days ago
United
Sat, Jun 20 - Wed, Jun 24
DEN
Denver
CPR
Casper
$176 Roundtrip, found 7 hours ago
$176
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Jun 20 from Denver to Casper, returning Wed, Jun 24, priced at $176 found 7 hours ago
United
Sat, May 16 - Sun, May 24
DEN
Denver
CPR
Casper
$178 Roundtrip, found 9 hours ago
$178
Roundtrip
found 9 hours ago
Select United flight, departing Sat, May 16 from Denver to Casper, returning Sun, May 24, priced at $178 found 9 hours ago
United
Thu, Mar 5 - Mon, Mar 9
DEN
Denver
CPR
Casper
$184 Roundtrip, found 14 hours ago
$184
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Mar 5 from Denver to Casper, returning Mon, Mar 9, priced at $184 found 14 hours ago
United
Mon, Apr 27 - Sun, May 3
DEN
Denver
CPR
Casper
$186 Roundtrip, found 2 days ago
$186
Roundtrip
found 2 days ago
Select United flight, departing Mon, Apr 27 from Denver to Casper, returning Sun, May 3, priced at $186 found 2 days ago
United
Sat, Jun 20 - Wed, Jun 24
DEN
Denver
CPR
Casper
$188 Roundtrip, found 3 days ago
$188
Roundtrip
found 3 days ago
Select United flight, departing Sat, Jun 20 from Denver to Casper, returning Wed, Jun 24, priced at $188 found 3 days ago
United
Wed, Feb 25 - Wed, Mar 4
DEN
Denver
CPR
Casper
$199 Roundtrip, found 5 days ago
$199
Roundtrip
found 5 days ago
Select United flight, departing Wed, Feb 25 from Denver to Casper, returning Wed, Mar 4, priced at $199 found 5 days ago
United
Sat, Jun 20 - Wed, Jun 24
DEN
Denver
CPR
Casper
$201 Roundtrip, found 7 hours ago
$201
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Jun 20 from Denver to Casper, returning Wed, Jun 24, priced at $201 found 7 hours ago
United
Fri, May 1 - Fri, May 8
DEN
Denver
CPR
Casper
$205 Roundtrip, found 5 days ago
$205
Roundtrip
found 5 days ago
Select United flight, departing Fri, May 1 from Denver to Casper, returning Fri, May 8, priced at $205 found 5 days ago

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Alternative airports near Casper

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Natrona County Intl. CPR. Cheapest and Closest option available. Average driving time to city center is 12 minutes. Flights from $229
CPR
Natrona County Intl.
CheapestClosest
Average driving time to city center12 min
Flights from $229

Find the cheapest month to fly from Denver (DEN) to Casper (CPR)

August is typically the cheapest month to fly

From $169 - $462 per traveler.

Frequently asked questions

How much does a flight from Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.) cost?
You can find cheap one-way flights from $129 and cheap return flights from $169 Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.) with Expedia. One-way flights typically cost between $128 and $419, and return flights often range between $169 and $500. 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 Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County 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 Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.)?
March is the cheapest month to fly from Denver, CO (DEN) to Casper, WY (CPR), with average round-trip fares around $174. This fare is about 26% lower than the average price throughout the year, as March typically sees a lull in travel demand. Other budget-friendly months to consider are April and June.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.)?
You can fly direct from DEN to CPR on United, with around 53 flights per week.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County 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 Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.)?
The best airline to fly with from Denver, CO (DEN) to Casper, WY (CPR) 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 DEN to CPR, 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 Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.)?
For flights from Denver (DEN) to Casper (CPR), March and April are the best months to consider, with average return flight prices around $174. These months offer a great combination of affordability and pleasant travel conditions, making them ideal for your journey.*Prices based on flights available on Expedia in the last year.
How many flights per day from Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.)?
On average, there are around 8 nonstop flights per day from Denver Intl. (DEN) to Natrona County Intl. (CPR). For more options, look at flights that include layovers.
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.)?
The earliest flight from Denver Intl. (DEN) to Natrona County Intl. (CPR) typically leaves at about 8:30 AM, operated by United. This seasonal service can help you get to Casper early in the day. 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 Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.)?
The most popular departure times for flights from Denver, CO (DEN) to Casper, WY (CPR) are in the late afternoon, from 3pm to 6pm. This accounts for around 28% of total traffic. United Airlines offers flights during this window. Many travelers prefer this time because it fits well with their schedules, allowing for a productive day before flying.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.)?
Flying nonstop from DEN to CPR takes around 1 hour 20 minutes, with the route 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 Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.)?
First class seats are offered on the DEN to CPR route with United Airlines.
How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County 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 Casper from Denver Intl. (DEN)?
From Denver Intl. (DEN), you can fly typically into Natrona County Intl. (CPR) to reach Casper. 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 Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County 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 Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.) flight and hotel package 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 Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County Intl.)?
If you booked your Denver, CO (DEN-Denver Intl.) to Casper, WY (CPR-Natrona County 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
Denver Intl.
Destination airport
Natrona County Intl.
Airlines serving
United
Roundtrip price
$168
Distance
230 mi
Average flight time
1 hour 16 mins

Book with confidence

Denver to Casper Flights

The cheapest times to fly from Denver to Casper

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 Denver to Casper are during the month of June. You can find some of the cheapest flights from Denver to Casper with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Casper

Sunday is one of the best days to book for cheap flights from Denver to Casper: 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 Denver to Casper

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 Denver to Casper in 2026. You can also book with separate airlines for your outbound and return journeys, from $129 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 Denver to Casper 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 Denver to Casper 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.

 

Denver to Casper Flights

*Flight schedules are subject to change.

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*Available to One Key members.