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

View $159 flight on Mon, Jul 13, 2026Opens in a new window

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

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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
Fri, Aug 28 - Fri, Sep 4
CPR
Casper
DEN
Denver
$229 Roundtrip, found 5 hours ago
$229
Roundtrip
found 5 hours ago
Select United flight, departing Fri, Aug 28 from Casper to Denver, returning Fri, Sep 4, priced at $229 found 5 hours ago
United
Fri, Aug 28 - Fri, Sep 4
CPR
Casper
DEN
Denver
$235 Roundtrip, found 5 hours ago
$235
Roundtrip
found 5 hours ago
Select United flight, departing Fri, Aug 28 from Casper to Denver, returning Fri, Sep 4, priced at $235 found 5 hours ago
United
Sat, Sep 26 - Mon, Sep 28
CPR
Casper
DEN
Denver
$236 Roundtrip, found 1 day ago
$236
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 26 from Casper to Denver, returning Mon, Sep 28, priced at $236 found 1 day ago
United
Fri, Jun 26 - Sun, Jun 28
CPR
Casper
DEN
Denver
$239 Roundtrip, found 1 hour ago
$239
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Jun 26 from Casper to Denver, returning Sun, Jun 28, priced at $239 found 1 hour ago
United
Fri, Aug 28 - Fri, Sep 4
CPR
Casper
DEN
Denver
$241 Roundtrip, found 5 hours ago
$241
Roundtrip
found 5 hours ago
Select United flight, departing Fri, Aug 28 from Casper to Denver, returning Fri, Sep 4, priced at $241 found 5 hours ago
United
Wed, Jun 24 - Sun, Jun 28
CPR
Casper
DEN
Denver
$244 Roundtrip, found 19 hours ago
$244
Roundtrip
found 19 hours ago
Select United flight, departing Wed, Jun 24 from Casper to Denver, returning Sun, Jun 28, priced at $244 found 19 hours ago
United
Fri, Aug 28 - Fri, Sep 4
CPR
Casper
DEN
Denver
$247 Roundtrip, found 5 hours ago
$247
Roundtrip
found 5 hours ago
Select United flight, departing Fri, Aug 28 from Casper to Denver, returning Fri, Sep 4, priced at $247 found 5 hours ago
United
Fri, Jul 24 - Tue, Jul 28
CPR
Casper
DEN
Denver
$248 Roundtrip, found 1 day ago
$248
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jul 24 from Casper to Denver, returning Tue, Jul 28, priced at $248 found 1 day ago
United
Wed, Jun 17 - Wed, Jun 24
CPR
Casper
DEN
Denver
$250 Roundtrip, found 2 days ago
$250
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jun 17 from Casper to Denver, returning Wed, Jun 24, priced at $250 found 2 days ago
United
Thu, Jun 25 - Sun, Jun 28
CPR
Casper
DEN
Denver
$254 Roundtrip, just found
$254
Roundtrip
just found
Select United flight, departing Thu, Jun 25 from Casper to Denver, returning Sun, Jun 28, priced at $254 just found

Alternative airports near Denver

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

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $259
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $259

What you need to know for your flight from Natrona County Intl. to Denver Intl.

Casper (CPR) to Denver (DEN) at a glance

Travel effortlessly from Natrona County International Airport (CPR) to Denver International Airport (DEN) on this domestic short-haul route with a full-service carrier. Explore Denver's iconic attractions and vibrant neighborhoods while finding the travel itinerary that best aligns with your schedule. Check out the essential details for flights from Casper to Denver to plan your visit smoothly.

  • Fastest flight duration: around 1h 30m non-stop
  • Route distance: roughly 250 miles (400 km)
  • Flights per week: around 9 departures on average
  • Typical fares (one-way): economy tickets often range from $85–$415, depending on seasonality and how far ahead you book

Flights from Natrona County International Airport (CPR) to Denver International Airport (DEN)

Based on the latest traveler bookings, here are the top airlines preferred for non-stop flights from Casper to Denver. These options allow you to tailor your journey by balancing cost, total travel time, and cabin class to create the ideal travel itinerary.

  • United: As a prominent full-service airline, United provides non-stop flights on this route, with one-way ticket prices generally falling between $85 and $415. The total duration of the journey is approximately 1 hour and 30 minutes.

Best time to fly from Casper (CPR) to Denver (DEN)

The most popular months for travelers flying from Casper to Denver are January, February, and March, when peak temperatures in Denver reach up to 38.5°F in March. If you prefer quieter travel, consider October, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 50.2°F. For better deals, February usually offers the lowest average one-way fare around $137. Flight availability peaks in April and September, with approximately 11 flights per week, making it easier to find convenient departure times.

  • Cheapest time to fly: February usually offers good deals with average one-way fare around $137, roughly 23% cheaper than the yearly average.
  • Another budget-friendly time to fly: November typically offers an average one-way fare of around $145.
  • Most flight options: April and September have the highest number of flights from Casper to Denver, with approximately 11 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January28.4°F (-2.0°C)High8$196
February28.6°F (-1.9°C)High9$137
March38.5°F (3.6°C)High9$189
April45.3°F (7.4°C)Average11$184
May54.0°F (12.2°C)Average9$191
June66.9°F (19.4°C)Average9$185
July72.1°F (22.3°C)Low7$207
August71.2°F (21.8°C)Low8$230
September65.1°F (18.4°C)Average11$175
October50.2°F (10.1°C)Low7$162
November38.5°F (3.6°C)Average9$145
December28.9°F (-1.7°C)Average8$157

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

How to find the best prices for flights from Casper (CPR) to Denver (DEN)

Getting some of the best deals on flights from Casper to Denver is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are typically found when booking 2 to 8 weeks in advance, which coincides with when most travelers make their reservations. Morning departures, from 5 a.m. to 12 p.m., tend to offer lower prices and are also the most popular flight times. Additionally, flying on Friday provides both cheaper rates and is the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Denver International Airport from Natrona County International Airport

Denver welcomes travelers from Casper with a range of transport options based on price, convenience, and proximity. Here's how to reach Denver efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Denver, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Denver International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Denver International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Denver International Airport, Jeppesen Terminal Station, a metro station, is located about 0.1 miles away on foot, providing convenient access for travelers heading into the city.

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 31 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 August. 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.

 

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