$358 Cheap Flights from Philadelphia (PHL) to Casper (CPR)

View $358 flight on Fri, Sep 4, 2026Opens in a new window

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

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Cheap Flights from Philadelphia to Casper (PHL-CPR)

Prices were available within the past 7 days and start at $358 for one-way flights and $334 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Apr 29 - Wed, May 6
PHL
Philadelphia
CPR
Casper
$334 Roundtrip, found 3 days ago
$334
Roundtrip
found 3 days ago
Select United flight, departing Wed, Apr 29 from Philadelphia to Casper, returning Wed, May 6, priced at $334 found 3 days ago
United
Fri, Apr 24 - Wed, Apr 29
PHL
Philadelphia
CPR
Casper
$338 Roundtrip, found 23 hours ago
$338
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Apr 24 from Philadelphia to Casper, returning Wed, Apr 29, priced at $338 found 23 hours ago
United
Fri, Apr 24 - Wed, Apr 29
PHL
Philadelphia
CPR
Casper
$344 Roundtrip, found 23 hours ago
$344
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Apr 24 from Philadelphia to Casper, returning Wed, Apr 29, priced at $344 found 23 hours ago
United
Wed, Mar 25 - Tue, Mar 31
PHL
Philadelphia
CPR
Casper
$359 Roundtrip, found 6 days ago
$359
Roundtrip
found 6 days ago
Select United flight, departing Wed, Mar 25 from Philadelphia to Casper, returning Tue, Mar 31, priced at $359 found 6 days ago
United
Wed, Mar 25 - Tue, Mar 31
PHL
Philadelphia
CPR
Casper
$369 Roundtrip, found 6 days ago
$369
Roundtrip
found 6 days ago
Select United flight, departing Wed, Mar 25 from Philadelphia to Casper, returning Tue, Mar 31, priced at $369 found 6 days ago
United
Fri, Apr 24 - Wed, Apr 29
PHL
Philadelphia
CPR
Casper
$379 Roundtrip, found 23 hours ago
$379
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Apr 24 from Philadelphia to Casper, returning Wed, Apr 29, priced at $379 found 23 hours ago
United
Fri, Apr 24 - Wed, Apr 29
PHL
Philadelphia
CPR
Casper
$385 Roundtrip, found 23 hours ago
$385
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Apr 24 from Philadelphia to Casper, returning Wed, Apr 29, priced at $385 found 23 hours ago
United
Fri, Apr 24 - Wed, Apr 29
PHL
Philadelphia
CPR
Casper
$389 Roundtrip, found 23 hours ago
$389
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Apr 24 from Philadelphia to Casper, returning Wed, Apr 29, priced at $389 found 23 hours ago
United
Fri, Apr 24 - Wed, Apr 29
PHL
Philadelphia
CPR
Casper
$394 Roundtrip, found 23 hours ago
$394
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Apr 24 from Philadelphia to Casper, returning Wed, Apr 29, priced at $394 found 23 hours ago
United
Wed, Apr 29 - Wed, May 6
PHL
Philadelphia
CPR
Casper
$421 Roundtrip, found 3 days ago
$421
Roundtrip
found 3 days ago
Select United flight, departing Wed, Apr 29 from Philadelphia to Casper, returning Wed, May 6, priced at $421 found 3 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 $724
CPR
Natrona County Intl.
CheapestClosest
Average driving time to city center12 min
Flights from $724

Frequently asked questions

How much does a flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.) cost?
You can find cheap one-way flights from $358 and cheap return flights from $334 Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.) with Expedia. One-way flights usually range from $337 to $689, and return flights typically cost between $429 and $1584. 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 Philadelphia, PA (PHL-Philadelphia 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 Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.)?
The cheapest month to fly from PHL to CPR is April 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 Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.)?
Enter PHL to CPR and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.)?
United is one of the cheapest airlines offering connecting flights from Philadelphia Intl. (PHL) to Natrona County Intl. (CPR), with round-trip tickets starting from around $298 with a layover in O'Hare Intl. (ORD). 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 Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.)?
To find a cheap flight from Philadelphia, PA (PHL-Philadelphia 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 time to fly from Philadelphia, PA (PHL-Philadelphia Intl.) 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 Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.)?
The earliest flight from Philadelphia (PHL) to Casper (CPR) usually leaves at around 6:00 AM, with options from Delta and United. This service operates seasonally in April and May, and an early flight can help you make the most of 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 Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.)?
The most popular departure times for flights from Philadelphia International Airport (PHL) to Casper (Natrona County International Airport - CPR) are in the early morning, from 6am to 9am. About 52% of passengers prefer this time window. Many major carriers, including United Airlines and Delta Air Lines, offer flights during this window. This timing works well because it allows you to start your day early and maximize your time at your destination.
How long does it take to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.)?
Flights from PHL to CPR with one stop typically take around 6 hours 50 minutes, covering approximately 1,623 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 Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.)?
Select the "Business class" and "First class" filters when looking for PHL to CPR flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.) flight with Expedia?
It's easy to earn miles on a Philadelphia, PA (PHL-Philadelphia 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 Philadelphia Intl. (PHL)?
If you're planning to travel to Casper from Philadelphia Intl. (PHL), you can fly into Natrona County Intl. (CPR) Some flights may connect through major hubs like Minneapolis - St. Paul Intl. (MSP), Salt Lake City Intl. (SLC), O'Hare Intl. (ORD) 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 Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.) at the last minute?
Typically, booking a last minute flight from Philadelphia, PA (PHL-Philadelphia 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 Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.) flight and hotel package?
Securing a Philadelphia, PA (PHL-Philadelphia 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 Philadelphia, PA (PHL-Philadelphia Intl.) to Casper, WY (CPR-Natrona County Intl.)?
If you booked your Philadelphia, PA (PHL-Philadelphia 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
Philadelphia Intl.
Destination airport
Natrona County Intl.
Airlines serving
United
Roundtrip price
$334
Distance
1622 mi

Book with confidence

Philadelphia to Casper Flights

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

 

The best time to book a flight from Philadelphia to Casper

Sunday is one of the best days to book for cheap flights from Philadelphia 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 Philadelphia 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 Philadelphia to Casper in 2026. You can also book with separate airlines for your outbound and return journeys, from $358 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 Philadelphia 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 Philadelphia 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.

 

Philadelphia to Casper Flights

*Flight schedules are subject to change.

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*Available to One Key members.