$538 Cheap Flights from Philadelphia (PHL) to Casper (CPR)

View $538 flight on Thu, Dec 25, 2025Opens in a new window

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

Cheap Flights from Philadelphia to Casper (PHL-CPR)

Prices were available within the past 7 days and start at $538 for one-way flights and $304 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Oct 10 - Sat, Oct 17
PHL
Philadelphia
CPR
Casper
$304 Roundtrip, found 4 days ago
$304
Roundtrip
found 4 days ago
Select United flight, departing Sat, Oct 10 from Philadelphia to Casper, returning Sat, Oct 17, priced at $304 found 4 days ago
United
Sat, Oct 10 - Sat, Oct 17
PHL
Philadelphia
CPR
Casper
$320 Roundtrip, found 4 days ago
$320
Roundtrip
found 4 days ago
Select United flight, departing Sat, Oct 10 from Philadelphia to Casper, returning Sat, Oct 17, priced at $320 found 4 days ago
United
Sat, Oct 10 - Sat, Oct 17
PHL
Philadelphia
CPR
Casper
$359 Roundtrip, found 4 days ago
$359
Roundtrip
found 4 days ago
Select United flight, departing Sat, Oct 10 from Philadelphia to Casper, returning Sat, Oct 17, priced at $359 found 4 days ago
United
Sat, Oct 10 - Sat, Oct 17
PHL
Philadelphia
CPR
Casper
$368 Roundtrip, found 4 days ago
$368
Roundtrip
found 4 days ago
Select United flight, departing Sat, Oct 10 from Philadelphia to Casper, returning Sat, Oct 17, priced at $368 found 4 days ago
United
Sat, Oct 10 - Sat, Oct 17
PHL
Philadelphia
CPR
Casper
$378 Roundtrip, found 4 days ago
$378
Roundtrip
found 4 days ago
Select United flight, departing Sat, Oct 10 from Philadelphia to Casper, returning Sat, Oct 17, priced at $378 found 4 days ago
United
Sat, Oct 10 - Sat, Oct 17
PHL
Philadelphia
CPR
Casper
$382 Roundtrip, found 4 days ago
$382
Roundtrip
found 4 days ago
Select United flight, departing Sat, Oct 10 from Philadelphia to Casper, returning Sat, Oct 17, priced at $382 found 4 days ago
United
Wed, Oct 14 - Fri, Oct 23
PHL
Philadelphia
CPR
Casper
$388 Roundtrip, found 5 days ago
$388
Roundtrip
found 5 days ago
Select United flight, departing Wed, Oct 14 from Philadelphia to Casper, returning Fri, Oct 23, priced at $388 found 5 days ago
United
Tue, Jun 9 - Mon, Jun 15
PHL
Philadelphia
CPR
Casper
$394 Roundtrip, found 1 day ago
$394
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jun 9 from Philadelphia to Casper, returning Mon, Jun 15, priced at $394 found 1 day ago
United
Sat, Oct 10 - Sat, Oct 17
PHL
Philadelphia
CPR
Casper
$410 Roundtrip, found 4 days ago
$410
Roundtrip
found 4 days ago
Select United flight, departing Sat, Oct 10 from Philadelphia to Casper, returning Sat, Oct 17, priced at $410 found 4 days ago
United
Wed, Jun 10 - Mon, Jun 15
PHL
Philadelphia
CPR
Casper
$413 Roundtrip, found 1 day ago
$413
Roundtrip
found 1 day ago
Select United flight, departing Wed, Jun 10 from Philadelphia to Casper, returning Mon, Jun 15, priced at $413 found 1 day ago

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Natrona County Intl. Airport (CPR) cost?
Secure a cheap one-way flight from $538 or cheap return flight from $304 from Philadelphia Intl. Airport (PHL) to Natrona County Intl. Airport (CPR) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Philadelphia Intl. Airport (PHL) to Natrona County Intl. Airport (CPR)?
October is the cheapest month to fly from PHL to CPR. Timing your trip outside of the busy season is often the key to finding better deals on flights.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to Natrona County Intl. Airport (CPR)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from PHL to CPR. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Philadelphia Intl. Airport (PHL) to Natrona County Intl. Airport (CPR)?
There aren't any daily nonstop flights departing from Philadelphia Intl. Airport (PHL) to Natrona County Intl. Airport (CPR). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from PHL to CPR?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on a range of factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to Natrona County Intl. Airport (CPR)?
Book a flight from Philadelphia Intl. Airport (PHL) to Natrona County Intl. Airport (CPR) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to Natrona County Intl. Airport (CPR) last-minute?
Holding off until right before your break to book your flight from PHL to CPR generally means paying more. While you may come across some last-minute offers, they aren't always guaranteed. Keep your travel plans flexible to maximize your chances of landing a bargain.
Is it cheaper to book a PHL to CPR flight and hotel package?
Compared with arranging hotels and flights separately, booking a PHL to CPR flight and hotel package with Expedia could lead to significant savings. What's more, managing everything in one place takes the hassle out of travel planning. Simply secure your flights and select from our extensive range of stays, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to Natrona County Intl. Airport (CPR)?
If you reserved your PHL to CPR flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the fare type you purchased, 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
$303
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 October. 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 $538 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

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*Available to One Key members.