A golf course with a pond, green fields, and distant mountains.

$329 Cheap Flights from Peoria (PIA) to Casper (CPR)

View $329 flight on Fri, Oct 16, 2026Opens in a new window

Popular airlines from Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.)

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Cheap Flights from Peoria to Casper (PIA-CPR)

Prices were available within the past 7 days and start at $329 for one-way flights and $459 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Oct 16 - Tue, Oct 20
PIA
Peoria
CPR
Casper
$459 Roundtrip, found 6 days ago
$459
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 16 from Peoria to Casper, returning Tue, Oct 20, priced at $459 found 6 days ago
United
Fri, Oct 16 - Tue, Oct 20
PIA
Peoria
CPR
Casper
$504 Roundtrip, found 6 days ago
$504
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 16 from Peoria to Casper, returning Tue, Oct 20, priced at $504 found 6 days ago
United
Fri, Oct 16 - Tue, Oct 20
PIA
Peoria
CPR
Casper
$519 Roundtrip, found 6 days ago
$519
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 16 from Peoria to Casper, returning Tue, Oct 20, priced at $519 found 6 days ago
United
Fri, Oct 16 - Tue, Oct 20
PIA
Peoria
CPR
Casper
$529 Roundtrip, found 6 days ago
$529
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 16 from Peoria to Casper, returning Tue, Oct 20, priced at $529 found 6 days ago
United
Fri, Oct 16 - Tue, Oct 20
PIA
Peoria
CPR
Casper
$564 Roundtrip, found 6 days ago
$564
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 16 from Peoria to Casper, returning Tue, Oct 20, priced at $564 found 6 days ago
United
Fri, Oct 16 - Tue, Oct 20
PIA
Peoria
CPR
Casper
$569 Roundtrip, found 6 days ago
$569
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 16 from Peoria to Casper, returning Tue, Oct 20, priced at $569 found 6 days ago
United
Fri, Oct 16 - Tue, Oct 20
PIA
Peoria
CPR
Casper
$594 Roundtrip, found 6 days ago
$594
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 16 from Peoria to Casper, returning Tue, Oct 20, priced at $594 found 6 days ago
United
Fri, Oct 16 - Tue, Oct 20
PIA
Peoria
CPR
Casper
$613 Roundtrip, found 6 days ago
$613
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 16 from Peoria to Casper, returning Tue, Oct 20, priced at $613 found 6 days ago
United
Fri, Oct 16 - Tue, Oct 20
PIA
Peoria
CPR
Casper
$647 Roundtrip, found 6 days ago
$647
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 16 from Peoria to Casper, returning Tue, Oct 20, priced at $647 found 6 days ago
United
Fri, Oct 16 - Tue, Oct 20
PIA
Peoria
CPR
Casper
$659 Roundtrip, found 6 days ago
$659
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 16 from Peoria to Casper, returning Tue, Oct 20, priced at $659 found 6 days ago

Frequently asked questions

How much does a flight from Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.) cost?
You can find cheap one-way flights from $329 and cheap return flights from $459 Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.) with Expedia. Return flights typically cost between $328 and $616. 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 Peoria, IL (PIA-Greater Peoria Regional) 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 Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.)?
The cheapest month to fly from PIA to CPR 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 Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.)?
Enter PIA to CPR and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.)?
United is one of the cheapest airlines offering connecting flights from Peoria (PIA) to Casper (CPR), with return tickets starting from around $328 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 Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.)?
To find a cheap flight from Peoria, IL (PIA-Greater Peoria Regional) 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 Peoria, IL (PIA-Greater Peoria Regional) 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 Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.)?
The earliest flight from Greater Peoria Regional Airport (PIA) to Natrona County International Airport (CPR) usually leaves at around 6:45 AM, operated by United Airlines. This early departure can help you maximize your day in Casper. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.)?
You'll usually find the most flights from Greater Peoria Regional (PIA) to Natrona County Intl. (CPR) on a Saturday, with around 3 flights available. This gives you plenty of options for your travel plans. A major airline on this route is United.
What are the most popular departure times for flights from Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.)?
The most popular departure times for flights from Peoria (PIA) to Casper (CPR) are in the morning, from 6am to 9am. About 84% of passengers prefer this time window. Many major carriers, including United Airlines, offer flights during this window. This timing works well because it allows you to make the most of your day upon arrival.
How long does it take to fly from Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.)?
A flight from PIA to CPR with a layover takes around 7 hours, with the route covering approximately 876 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 Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.)?
Select the "Business class" and "First class" filters when looking for PIA 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 Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.) flight with Expedia?
It's easy to earn miles on a Peoria, IL (PIA-Greater Peoria Regional) 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 Greater Peoria Regional (PIA)?
If you're planning to travel to Casper from Greater Peoria Regional (PIA), you can fly into Natrona County Intl. (CPR) Some flights may connect through major hubs like 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 Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.) at the last minute?
Typically, booking a last minute flight from Peoria, IL (PIA-Greater Peoria Regional) 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 Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.) flight and hotel package?
Securing a Peoria, IL (PIA-Greater Peoria Regional) 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 Peoria, IL (PIA-Greater Peoria Regional) to Casper, WY (CPR-Natrona County Intl.)?
If you booked your Peoria, IL (PIA-Greater Peoria Regional) 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
Greater Peoria Regional
Destination airport
Natrona County Intl.
Roundtrip price
$458
Distance
876 mi

Book with confidence

Peoria to Casper Flights

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

 

The best time to book a flight from Peoria to Casper

Sunday is one of the best days to book for cheap flights from Peoria 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 Peoria 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 Peoria to Casper in 2026. You can also book with separate airlines for your outbound and return journeys, from $329 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 Peoria 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 Peoria 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.

 

Peoria to Casper Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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