$222 Cheap Flights from Casper (CPR) to Sioux Falls (FSD)

View $222 flight on Wed, Dec 3, 2025Opens in a new window

Popular airlines from Casper, WY (CPR-Natrona County Intl.) to Sioux Falls Regional Airport (FSD)

Cheap Flights from Casper to Sioux Falls (CPR-FSD)

Prices were available within the past 7 days and start at $222 for one-way flights and $243 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Oct 21 - Sat, Oct 25
CPR
Casper
FSD
Sioux Falls
$243 Roundtrip, found 3 days ago
$243
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 21 from Casper to Sioux Falls, returning Sat, Oct 25, priced at $243 found 3 days ago
United
Tue, Oct 21 - Sat, Oct 25
CPR
Casper
FSD
Sioux Falls
$258 Roundtrip, found 15 hours ago
$258
Roundtrip
found 15 hours ago
Select United flight, departing Tue, Oct 21 from Casper to Sioux Falls, returning Sat, Oct 25, priced at $258 found 15 hours ago
United
Tue, Oct 21 - Sat, Oct 25
CPR
Casper
FSD
Sioux Falls
$268 Roundtrip, found 12 hours ago
$268
Roundtrip
found 12 hours ago
Select United flight, departing Tue, Oct 21 from Casper to Sioux Falls, returning Sat, Oct 25, priced at $268 found 12 hours ago
United
Tue, Oct 21 - Sat, Oct 25
CPR
Casper
FSD
Sioux Falls
$275 Roundtrip, found 15 hours ago
$275
Roundtrip
found 15 hours ago
Select United flight, departing Tue, Oct 21 from Casper to Sioux Falls, returning Sat, Oct 25, priced at $275 found 15 hours ago
United
Tue, Oct 21 - Sat, Oct 25
CPR
Casper
FSD
Sioux Falls
$277 Roundtrip, found 15 hours ago
$277
Roundtrip
found 15 hours ago
Select United flight, departing Tue, Oct 21 from Casper to Sioux Falls, returning Sat, Oct 25, priced at $277 found 15 hours ago
United
Fri, Oct 17 - Sun, Oct 19
CPR
Casper
FSD
Sioux Falls
$278 Roundtrip, found 3 hours ago
$278
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Oct 17 from Casper to Sioux Falls, returning Sun, Oct 19, priced at $278 found 3 hours ago
United
Tue, Oct 28 - Wed, Nov 5
CPR
Casper
FSD
Sioux Falls
$283 Roundtrip, found 3 days ago
$283
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 28 from Casper to Sioux Falls, returning Wed, Nov 5, priced at $283 found 3 days ago
United
Tue, Oct 21 - Sat, Oct 25
CPR
Casper
FSD
Sioux Falls
$286 Roundtrip, found 12 hours ago
$286
Roundtrip
found 12 hours ago
Select United flight, departing Tue, Oct 21 from Casper to Sioux Falls, returning Sat, Oct 25, priced at $286 found 12 hours ago
United
Tue, Oct 28 - Sat, Nov 1
CPR
Casper
FSD
Sioux Falls
$288 Roundtrip, found 3 days ago
$288
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 28 from Casper to Sioux Falls, returning Sat, Nov 1, priced at $288 found 3 days ago
United
Tue, Oct 21 - Sat, Oct 25
CPR
Casper
FSD
Sioux Falls
$293 Roundtrip, found 15 hours ago
$293
Roundtrip
found 15 hours ago
Select United flight, departing Tue, Oct 21 from Casper to Sioux Falls, returning Sat, Oct 25, priced at $293 found 15 hours ago

Find the cheapest month to fly from Casper (CPR) to Sioux Falls (FSD)

January is typically the cheapest month to fly

From US$218 - US$482 per traveler.
Flights from Casper (CPR) to Sioux Falls (FSD)
Origin airport
Natrona County Intl.
Destination airport
Sioux Falls Regional
Distance
491 mi

Casper to Sioux Falls Flights

The cheapest times to fly from Casper to Sioux Falls

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

 

The best time to book a flight from Casper to Sioux Falls

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

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 Sioux Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $222 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 Sioux Falls 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 Sioux Falls 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.

 

Frequently asked questions

How much does a flight from Natrona County Intl. Airport (CPR) to Sioux Falls Regional Airport (FSD) cost?
Snag a cheap one-way flight from $222 or cheap return flight from $243 from Natrona County Intl. Airport (CPR) to Sioux Falls Regional Airport (FSD) 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 Sioux Falls Regional Airport (FSD)?
October is the least expensive month to fly from CPR to FSD. Traveling outside of peak seasons is often the key to finding better deals on flights.
What is the cheapest airline that flies from Natrona County Intl. Airport (CPR) to Sioux Falls Regional Airport (FSD)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest CPR to FSD flight.
How many flights per day from Natrona County Intl. Airport (CPR) to Sioux Falls Regional Airport (FSD)?
Nonstop flights from Natrona County Intl. Airport (CPR) to Sioux Falls Regional Airport (FSD) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CPR to FSD?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*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 Sioux Falls Regional Airport (FSD)?
Choose a flight from Natrona County Intl. Airport (CPR) to Sioux Falls Regional Airport (FSD) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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 Sioux Falls Regional Airport (FSD) last-minute?
Waiting until just before your trip to book a flight from CPR to FSD often results in higher prices. While you may come across some last-minute discounts, they're not always guaranteed. Be flexible with your itinerary for the best chance of scoring a bargain.
Is it cheaper to book a CPR to FSD flight and hotel package?
Compared with arranging hotels and flights separately, booking a CPR to FSD flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the hassle out of travel planning. Simply secure your flights and select from our wide range of hotels, then tailor your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Natrona County Intl. Airport (CPR) to Sioux Falls Regional Airport (FSD)?
It's usually possible to cancel or reschedule your CPR to FSD flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.