$232 Cheap Flights from Casper (CPR) to Boise (BOI)

View $232 flight on Tue, Jan 6, 2026Opens in a new window

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

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Cheap Flights from Casper to Boise (CPR-BOI)

Prices were available within the past 7 days and start at $232 for one-way flights and $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Apr 9 - Mon, Apr 13
CPR
Casper
BOI
Boise
$238 Roundtrip, found 1 hour ago
$238
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Apr 9 from Casper to Boise, returning Mon, Apr 13, priced at $238 found 1 hour ago
United
Sat, Jan 3 - Sat, Jan 10
CPR
Casper
BOI
Boise
$243 Roundtrip, found 2 days ago
$243
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 3 from Casper to Boise, returning Sat, Jan 10, priced at $243 found 2 days ago
United
Fri, Jan 2 - Sat, Jan 3
CPR
Casper
BOI
Boise
$248 Roundtrip, found 3 days ago
$248
Roundtrip
found 3 days ago
Select United flight, departing Fri, Jan 2 from Casper to Boise, returning Sat, Jan 3, priced at $248 found 3 days ago
United
Sat, Apr 4 - Sat, Apr 11
CPR
Casper
BOI
Boise
$255 Roundtrip, found 4 days ago
$255
Roundtrip
found 4 days ago
Select United flight, departing Sat, Apr 4 from Casper to Boise, returning Sat, Apr 11, priced at $255 found 4 days ago
United
Fri, Jan 2 - Sat, Jan 3
CPR
Casper
BOI
Boise
$258 Roundtrip, found 3 days ago
$258
Roundtrip
found 3 days ago
Select United flight, departing Fri, Jan 2 from Casper to Boise, returning Sat, Jan 3, priced at $258 found 3 days ago
United
Sat, Jan 3 - Sat, Jan 10
CPR
Casper
BOI
Boise
$261 Roundtrip, found 2 days ago
$261
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 3 from Casper to Boise, returning Sat, Jan 10, priced at $261 found 2 days ago
United
Sat, Jan 3 - Sat, Jan 10
CPR
Casper
BOI
Boise
$263 Roundtrip, found 2 days ago
$263
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 3 from Casper to Boise, returning Sat, Jan 10, priced at $263 found 2 days ago
United
Wed, Dec 31 - Thu, Jan 8
CPR
Casper
BOI
Boise
$268 Roundtrip, just found
$268
Roundtrip
just found
Select United flight, departing Wed, Dec 31 from Casper to Boise, returning Thu, Jan 8, priced at $268 just found
United
Thu, Dec 25 - Wed, Jan 7
CPR
Casper
BOI
Boise
$278 Roundtrip, found 16 hours ago
$278
Roundtrip
found 16 hours ago
Select United flight, departing Thu, Dec 25 from Casper to Boise, returning Wed, Jan 7, priced at $278 found 16 hours ago
United
Sat, Apr 4 - Sat, Apr 11
CPR
Casper
BOI
Boise
$280 Roundtrip, found 4 days ago
$280
Roundtrip
found 4 days ago
Select United flight, departing Sat, Apr 4 from Casper to Boise, returning Sat, Apr 11, priced at $280 found 4 days ago

Frequently asked questions

How much does a flight from Natrona County Intl. Airport (CPR) to Boise Airport (BOI) cost?
Snag a cheap one-way flight from $232 or cheap return flight from $238 from Natrona County Intl. Airport (CPR) to Boise Airport (BOI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Natrona County Intl. Airport (CPR) to Boise Airport (BOI)?
The cheapest month to fly from CPR to BOI is April, when there's less demand. Off-peak season is usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Natrona County Intl. Airport (CPR) to Boise Airport (BOI)?
To find the cheapest airline flying from CPR to BOI, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Natrona County Intl. Airport (CPR) to Boise Airport (BOI)?
You'll need to take a flight with a layover when traveling from Natrona County Intl. Airport (CPR) to Boise Airport (BOI). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from CPR to BOI?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Natrona County Intl. Airport (CPR) to Boise Airport (BOI)?
Select a flight from Natrona County Intl. Airport (CPR) to Boise Airport (BOI) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour 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 Natrona County Intl. Airport (CPR) to Boise Airport (BOI) last-minute?
Holding off until right before your break to book a ticket from CPR to BOI often results in higher prices. While it's possible to find some last-minute offers, they aren't always guaranteed. Be flexible with your itinerary for the best chance of landing a bargain.
Is it cheaper to book a CPR to BOI flight and hotel package?
You'll typically save money by securing a CPR to BOI flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've chosen your ideal flights and accommodations, consider adding extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Natrona County Intl. Airport (CPR) to Boise Airport (BOI)?
If you reserved your CPR to BOI flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

Travel information

Origin airport
Natrona County Intl.
Destination airport
Boise
Airlines serving
United
Roundtrip price
$238
Distance
492 mi

Book with confidence

Casper to Boise Flights

The cheapest times to fly from Casper to Boise

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

 

The best time to book a flight from Casper to Boise

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

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 Boise in 2026. You can also book with separate airlines for your outbound and return journeys, from $232 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 Boise 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 Boise 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 Boise Flights

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*Available to One Key members.