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$373 Cheap Flights from Casper (CPR) to Philadelphia (PHL)

View $373 flight on Wed, Oct 21, 2026Opens in a new window

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

Cheap Flights from Casper to Philadelphia (CPR-PHL)

Prices were available within the past 7 days and start at $373 for one-way flights and $348 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Oct 24 - Wed, Oct 28
CPR
Casper
PHL
Philadelphia
$348 Roundtrip, found 19 hours ago
$348
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Oct 24 from Casper to Philadelphia, returning Wed, Oct 28, priced at $348 found 19 hours ago
United
Sat, Oct 24 - Wed, Oct 28
CPR
Casper
PHL
Philadelphia
$354 Roundtrip, found 19 hours ago
$354
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Oct 24 from Casper to Philadelphia, returning Wed, Oct 28, priced at $354 found 19 hours ago
United
Thu, Sep 3 - Sun, Sep 6
CPR
Casper
PHL
Philadelphia
$370 Roundtrip, found 2 days ago
$370
Roundtrip
found 2 days ago
Select United flight, departing Thu, Sep 3 from Casper to Philadelphia, returning Sun, Sep 6, priced at $370 found 2 days ago
United
Sat, Oct 24 - Wed, Oct 28
CPR
Casper
PHL
Philadelphia
$375 Roundtrip, found 19 hours ago
$375
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Oct 24 from Casper to Philadelphia, returning Wed, Oct 28, priced at $375 found 19 hours ago
United
Wed, Sep 2 - Sun, Sep 6
CPR
Casper
PHL
Philadelphia
$376 Roundtrip, found 2 days ago
$376
Roundtrip
found 2 days ago
Select United flight, departing Wed, Sep 2 from Casper to Philadelphia, returning Sun, Sep 6, priced at $376 found 2 days ago
United
Thu, Sep 3 - Sun, Sep 6
CPR
Casper
PHL
Philadelphia
$378 Roundtrip, found 2 days ago
$378
Roundtrip
found 2 days ago
Select United flight, departing Thu, Sep 3 from Casper to Philadelphia, returning Sun, Sep 6, priced at $378 found 2 days ago
United
Fri, Oct 23 - Tue, Oct 27
CPR
Casper
PHL
Philadelphia
$383 Roundtrip, found 3 days ago
$383
Roundtrip
found 3 days ago
Select United flight, departing Fri, Oct 23 from Casper to Philadelphia, returning Tue, Oct 27, priced at $383 found 3 days ago
United
Sat, Oct 24 - Wed, Oct 28
CPR
Casper
PHL
Philadelphia
$388 Roundtrip, found 19 hours ago
$388
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Oct 24 from Casper to Philadelphia, returning Wed, Oct 28, priced at $388 found 19 hours ago
United
Fri, Oct 23 - Tue, Oct 27
CPR
Casper
PHL
Philadelphia
$391 Roundtrip, found 3 days ago
$391
Roundtrip
found 3 days ago
Select United flight, departing Fri, Oct 23 from Casper to Philadelphia, returning Tue, Oct 27, priced at $391 found 3 days ago
United
Sat, Aug 22 - Sat, Aug 29
CPR
Casper
PHL
Philadelphia
$394 Roundtrip, found 3 days ago
$394
Roundtrip
found 3 days ago
Select United flight, departing Sat, Aug 22 from Casper to Philadelphia, returning Sat, Aug 29, priced at $394 found 3 days ago

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

Casper (CPR) to Philadelphia (PHL) at a glance

Travel effortlessly from Casper (CPR) to Philadelphia (PHL) with a full-service airline on this convenient domestic short-haul route. Explore Philadelphia's renowned attractions and vibrant neighborhoods while selecting an itinerary that aligns perfectly with your schedule. Here are the essential details for flights from Natrona County International Airport (CPR) to Philadelphia International Airport (PHL).

  • Fastest flight duration: around 5 hours in-flight, plus roughly 1h 45m layover with one stop
  • Route distance: roughly 1,600 miles (2,570 km)
  • Flights per week: around 7 departures on average
  • Typical fares (one-way): economy tickets often range from $140–$635, depending on seasonality and how far ahead you book

Flights from Natrona County International Airport (CPR) to Philadelphia International Airport (PHL)

Based on the latest traveler bookings, here are the top airlines favored for one-stop flights from Casper to Philadelphia, often featuring a layover at Denver International Airport (DEN) with a duration of about 1 hour and 45 minutes. This allows you to choose from various options to balance price, total travel time, and cabin class for your ideal itinerary.

  • United: This airline is a full-service carrier providing convenient one-stop flights, with one-way prices generally between $140 and $635. United manages nearly all departures on this route, featuring an in-flight duration of about 5 hours and a total travel time of approximately 6 hours and 45 minutes, including the layover.

How to find the best prices for flights from Casper (CPR) to Philadelphia (PHL)

Getting some of the best deals on flights from Casper to Philadelphia 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 usually available when booking 2-8 weeks in advance, which coincides with the timing most travelers choose. Departures in the morning (5 a.m.-12 p.m.) tend to be less expensive and are also popular. Additionally, flying on Saturday often results in lower prices, although Wednesday remains the most common 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 Philadelphia International Airport from Natrona County International Airport

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

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Philadelphia, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Philadelphia International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Philadelphia 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 Philadelphia International Airport, several transportation options are conveniently located nearby. The PHL Airport Terminals C & D Station, a metro station, is about 0.1 miles away on foot, while the Philadelphia International Airport Terminal B Station, a train station, is around 0.2 miles away on foot. For those heading to the waterfront, Philadelphia Seaport, a seaport, is approximately 8.4 miles from the airport by car.

Frequently asked questions

How much does a flight from Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) cost?
You can find cheap one-way flights from $373 and cheap return flights from $348 Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) with Expedia. One-way flights typically cost between $388 and $826, and return flights often range between $464 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 Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia 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 Philadelphia, PA (PHL-Philadelphia Intl.)?
The cheapest month to fly from CPR to PHL is October 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 Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
Enter CPR to PHL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
United is one of the cheapest airlines offering connecting flights from Natrona County Intl. (CPR) to Philadelphia Intl. (PHL), with round-trip tickets starting from around $308 with a layover in Denver Intl. (DEN). 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 Philadelphia, PA (PHL-Philadelphia Intl.)?
To find a cheap flight from Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia 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 Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia 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 Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The earliest flight from Natrona County International (CPR) to Philadelphia International (PHL) typically departs at around 5:25 AM, operated by United and Alaska Airlines. This service is seasonal and active in April. An early departure can help you maximize your time in Philadelphia. 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 Philadelphia, PA (PHL-Philadelphia Intl.)?
The most popular departure times for flights from Casper, WY (CPR) to Philadelphia, PA (PHL) are in the late morning, from 9am to 12pm. About 25% of passengers choose this time window. Many major carriers, including United Airlines, offer flights during this window. This timing is favored because it allows you to travel comfortably without having to wake up too early.
How long does it take to fly from Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
A flight from CPR to PHL with a layover takes around 8 hours 20 minutes, with the route 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 Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
First class seats are offered on the CPR to PHL route with United Airlines.
How do I earn miles on a Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) flight with Expedia?
It's easy to earn miles on a Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia 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 Philadelphia from Natrona County Intl. (CPR)?
From Natrona County Intl. (CPR), you can fly into Philadelphia Intl. (PHL) to reach Philadelphia. Some flights may connect through major hubs like Denver Intl. (DEN) before reaching Philadelphia. 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 Philadelphia, PA (PHL-Philadelphia Intl.) at the last minute?
Typically, booking a last minute flight from Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia 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 Philadelphia, PA (PHL-Philadelphia Intl.) flight and hotel package?
Securing a Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) Philadelphia 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 Philadelphia, PA (PHL-Philadelphia Intl.)?
If you booked your Casper, WY (CPR-Natrona County Intl.) to Philadelphia, PA (PHL-Philadelphia 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
Philadelphia Intl.
Airlines serving
United
Roundtrip price
$348
Distance
1622 mi

Book with confidence

Casper to Philadelphia Flights

The cheapest times to fly from Casper to Philadelphia

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

 

The best time to book a flight from Casper to Philadelphia

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

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 Philadelphia in 2026. You can also book with separate airlines for your outbound and return journeys, from $373 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 Philadelphia 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 Philadelphia 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 Philadelphia Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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