$243 Cheap Flights from Eugene (EUG) to Casper (CPR)

View $243 flight on Sat, Sep 5, 2026Opens in a new window

Popular airlines from Mahlon Sweet Field Airport (EUG) to Casper, WY (CPR-Natrona County Intl.)

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Cheap Flights from Eugene to Casper (EUG-CPR)

Prices were available within the past 7 days and start at $243 for one-way flights and $259 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Sep 5 - Sun, Sep 6
EUG
Eugene
CPR
Casper
$259 Roundtrip, found 2 days ago
$259
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 5 from Eugene to Casper, returning Sun, Sep 6, priced at $259 found 2 days ago
United
Fri, Aug 28 - Sun, Sep 6
EUG
Eugene
CPR
Casper
$264 Roundtrip, found 1 day ago
$264
Roundtrip
found 1 day ago
Select United flight, departing Fri, Aug 28 from Eugene to Casper, returning Sun, Sep 6, priced at $264 found 1 day ago
United
Sat, Sep 5 - Sun, Sep 6
EUG
Eugene
CPR
Casper
$322 Roundtrip, found 2 days ago
$322
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 5 from Eugene to Casper, returning Sun, Sep 6, priced at $322 found 2 days ago
United
Sat, Aug 29 - Sat, Sep 5
EUG
Eugene
CPR
Casper
$327 Roundtrip, found 2 days ago
$327
Roundtrip
found 2 days ago
Select United flight, departing Sat, Aug 29 from Eugene to Casper, returning Sat, Sep 5, priced at $327 found 2 days ago
United
Fri, Aug 28 - Sun, Sep 6
EUG
Eugene
CPR
Casper
$328 Roundtrip, found 1 day ago
$328
Roundtrip
found 1 day ago
Select United flight, departing Fri, Aug 28 from Eugene to Casper, returning Sun, Sep 6, priced at $328 found 1 day ago
United
Sat, Sep 5 - Sun, Sep 6
EUG
Eugene
CPR
Casper
$329 Roundtrip, found 2 days ago
$329
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 5 from Eugene to Casper, returning Sun, Sep 6, priced at $329 found 2 days ago
United
Thu, Mar 5 - Wed, Mar 18
EUG
Eugene
CPR
Casper
$333 Roundtrip, found 3 days ago
$333
Roundtrip
found 3 days ago
Select United flight, departing Thu, Mar 5 from Eugene to Casper, returning Wed, Mar 18, priced at $333 found 3 days ago
United
Sat, Aug 29 - Sat, Sep 5
EUG
Eugene
CPR
Casper
$335 Roundtrip, found 2 days ago
$335
Roundtrip
found 2 days ago
Select United flight, departing Sat, Aug 29 from Eugene to Casper, returning Sat, Sep 5, priced at $335 found 2 days ago
United
Fri, Aug 28 - Sun, Sep 6
EUG
Eugene
CPR
Casper
$337 Roundtrip, found 1 day ago
$337
Roundtrip
found 1 day ago
Select United flight, departing Fri, Aug 28 from Eugene to Casper, returning Sun, Sep 6, priced at $337 found 1 day ago
United
Sun, Sep 6 - Tue, Sep 22
EUG
Eugene
CPR
Casper
$339 Roundtrip, found 2 days ago
$339
Roundtrip
found 2 days ago
Select United flight, departing Sun, Sep 6 from Eugene to Casper, returning Tue, Sep 22, priced at $339 found 2 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 $333
CPR
Natrona County Intl.
CheapestClosest
Average driving time to city center12 min
Flights from $333

Frequently asked questions

How much does a flight from Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.) cost?
You can find cheap one-way flights from $243 and cheap return flights from $259 Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.) with Expedia. One-way flights usually range from $248 to $705, and return flights typically cost between $339 and $1490. 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 Eugene, OR (EUG) 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 Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.)?
The cheapest month to fly from EUG to CPR is September when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.)?
Enter EUG to CPR and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.)?
United is one of the cheapest airlines offering connecting flights from Eugene, OR (EUG) to Casper, WY (CPR) with return tickets starting from around $238, with a layover in San Francisco Intl. (SFO). 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 Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.)?
To find a cheap flight from Eugene, OR (EUG) 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 time to fly from Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.)?
The earliest flight from Mahlon Sweet Field (EUG) to Natrona County International Airport (CPR) typically departs at around 5:00 AM, operated by United. This seasonal service is available in January, November, and December, allowing you to maximize your time in Casper. 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 Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.)?
The most popular departure times for flights from Mahlon Sweet Field (EUG) to Natrona County Intl. (CPR) are in the early morning, from 3am to 6am. About 37% of passengers prefer this time window. United Airlines, Delta and Alaska Airlines offer flights during this window. This timing is great for travelers looking to make the most of their day in Casper.
How long does it take to fly from Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.)?
Flights from EUG to CPR with one stop typically take around 4 hours 50 minutes, covering approximately 842 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 Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.)?
First class seats are offered on the EUG to CPR route with United Airlines.
How do I earn miles on a Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.) flight with Expedia?
It's easy to earn miles on a Eugene, OR (EUG) 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 Mahlon Sweet Field (EUG)?
From Mahlon Sweet Field (EUG), you can fly into Natrona County Intl. (CPR) to reach Casper. Some flights may connect through major hubs like Salt Lake City Intl. (SLC), Seattle - Tacoma Intl. (SEA), San Francisco Intl. (SFO) before reaching 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 Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.) at the last minute?
Typically, booking a last minute flight from Eugene, OR (EUG) 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 Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.) flight and hotel package?
Securing a Eugene, OR (EUG) 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 Eugene, OR (EUG) to Casper, WY (CPR-Natrona County Intl.)?
If you booked your Eugene, OR (EUG) 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
Eugene
Destination airport
Natrona County Intl.
Airlines serving
United
Roundtrip price
$259
Distance
841 mi

Book with confidence

Eugene to Casper Flights

The cheapest times to fly from Eugene 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 Eugene to Casper are during the month of September. You can find some of the cheapest flights from Eugene to Casper with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Eugene to Casper

Sunday is one of the best days to book for cheap flights from Eugene 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 Eugene 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 Eugene to Casper in 2026. You can also book with separate airlines for your outbound and return journeys, from $243 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 Eugene 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 Eugene 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.

 

Eugene to Casper Flights

*Flight schedules are subject to change.

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*Available to One Key members.