HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Casper

$343+ Cheap flights from Idaho to Casper (CPR)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — CPR
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho to Casper with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Idaho to Casper

Cheapest flights from Idaho to Casper
Explore the most affordable flight options available from Idaho to Casper. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/181:44 pm
GEG
-
CPR
1 stop5h 42m
United Airlines
Sun 2/223:15 pm
CPR
-
GEG
1 stop7h 02m
United Airlines
Deal found 2/3$343
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/182:40 pm
IDA
-
CPR
1 stop4h 22m
United Airlines
Sun 2/225:25 am
CPR
-
IDA
1 stop4h 23m
United Airlines
Deal found 2/3$354
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/61:48 pm
GEG
-
CPR
1 stop7h 26m
United Airlines
Sun 2/83:17 pm
CPR
-
GEG
1 stop7h 05m
United Airlines
Deal found 2/2$358
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:35 am
IDA
-
CPR
1 stop6h 05m
United Airlines
Sat 2/2111:26 am
CPR
-
IDA
1 stop5h 04m
United Airlines
Deal found 2/2$384
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/104:10 pm
GEG
-
CPR
1 stop5h 04m
United Airlines
Sat 2/149:00 am
CPR
-
GEG
1 stop7h 16m
United Airlines
Deal found 2/3$398

Find flight deals from Idaho to Casper

Keep the following information in mind while searching for Idaho to Casper flight deals. Data was last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$343
(United Airlines)

Popular in

January

Cheapest in

November

Average price

$308
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Casper Natrona County flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Casper Natrona County flights.
Search Deals
From Idaho to Casper Natrona County
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Casper that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Idaho to Casper that are best for you.

Fly from

Idaho

Fly to

Casper

Route

Depart

Return

Price

SpokaneCasper

GEG - CPR

GEGCPR

Spokane

Wed 2/18

1:44 pm-8:26 pm

1 stop5h 42m

Casper Natrona County

Sun 2/22

3:15 pm-9:17 pm

1 stop7h 02m

$343

Idaho FallsCasper

IDA - CPR

IDACPR

Idaho Falls Fanning Field

Wed 2/18

2:40 pm-7:02 pm

1 stop4h 22m

Casper Natrona County

Sun 2/22

5:25 am-9:48 am

1 stop4h 23m

$354

Idaho FallsCasper

IDA - CPR

IDACPR

Idaho Falls Fanning Field

Thu 2/19

5:33 pm-10:09 pm

1 stop4h 36m

Casper Natrona County

Sat 2/21

11:26 am-4:30 pm

1 stop5h 04m

$354

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Best time to book a flight from Idaho to Casper

Have a flexible travel schedule? Discover the best time to fly to Casper from Idaho with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho to Casper
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Idaho to Casper. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Casper from Idaho?

    Casper Natrona County (CPR) is the airport you will fly into if you book a flight from Idaho to Casper. It is only a 8.1 mi journey from Natrona County (CPR) to Casper’s city center.

  • How long is the flight from Idaho to Casper?

    A quick flight from Idaho to Casper can take about 5h 42m. United Airlines provides one of the quickest options available for as low as $343. The distance between Idaho and Casper is about 628 mi.

  • What are the most popular routes from Idaho to Casper?

    Most travelers choose Idaho Falls Fanning Field - Casper Natrona County, Spokane - Casper Natrona County or Pocatello - Casper Natrona County when deciding on the best route from Idaho to Casper.

  • Can I find deals for flights from Idaho to Casper that include hotel bookings?

    Yes. In addition to deals on Idaho to Casper flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho to Casper?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Casper.

  • Can I find deals for business class flights from Idaho to Casper?

    Yes. Cheapflights offers flight deals from Idaho to Casper by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to Casper

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Denver flights
Dallas/Fort Worth to Denver flights
O'Hare Intl to Denver flights
LaGuardia to Denver flights
John F Kennedy Intl to Denver flights
Dallas/Fort Worth to Salt Lake City flights
Boston to Denver flights
Seattle to Denver flights
Baltimore to Denver flights
Newark to Salt Lake City flights
Hobby to Denver flights
Dulles Intl to Denver flights
John F Kennedy Intl to Salt Lake City flights
Atlanta to Denver flights
Reagan-National to Denver flights
Philadelphia to Denver flights
Los Angeles to Denver flights
Seattle to Salt Lake City flights
Minneapolis to Denver flights
Dulles Intl to Salt Lake City flights
Los Angeles to Salt Lake City flights
San Francisco to Denver flights
George Bush Intcntl to Denver flights
Detroit to Denver flights
Boston to Salt Lake City flights
Austin to Denver flights
Orlando to Denver flights
O'Hare Intl to Salt Lake City flights
Miami to Denver flights
San Francisco to Salt Lake City flights
Tampa to Denver flights
Reagan-National to Salt Lake City flights
Baltimore to Salt Lake City flights
Cleveland to Denver flights
Charlotte to Denver flights
LaGuardia to Salt Lake City flights
Ontario to Denver flights
Raleigh to Denver flights
Philadelphia to Salt Lake City flights
Fort Lauderdale to Denver flights
Madison to Denver flights
Sky Harbor Intl to Denver flights
Cincinnati to Denver flights
Indianapolis to Denver flights
Milwaukee to Denver flights
Santa Ana to Denver flights
Atlanta to Salt Lake City flights
Midway to Denver flights
St. Louis to Denver flights
Cedar Rapids to Denver flights

Top airline flying from Idaho to Casper

Discover the top airline that operate flights from Idaho to Casper. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$218Average$298FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.