Cheap Flights from Sioux City (SUX) to Rapid City (RAP)

Popular airlines from Sioux City, IA (SUX-Sioux Gateway) to Rapid City Regional Airport (RAP)

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Find available prices by choosing your travel dates.

Cheap Flights from Sioux City to Rapid City (SUX-RAP)

Prices were available within the past 7 days and start at for one-way flights and $414 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, May 3 - Sun, May 4
SUX
Sioux City
RAP
Rapid City
$414 Roundtrip, found 6 days ago
$414
Roundtrip
found 6 days ago
Select United flight, departing Sat, May 3 from Sioux City to Rapid City, returning Sun, May 4, priced at $414 found 6 days ago
United
Thu, May 1 - Tue, May 6
SUX
Sioux City
RAP
Rapid City
$488 Roundtrip, found 6 days ago
$488
Roundtrip
found 6 days ago
Select United flight, departing Thu, May 1 from Sioux City to Rapid City, returning Tue, May 6, priced at $488 found 6 days ago
Flights from Sioux City (SUX) to Rapid City (RAP)
Origin airport
Sioux Gateway
Destination airport
Rapid City Regional
Roundtrip price
$413
Distance
354 mi

Sioux City to Rapid City Flights

The cheapest times to fly from Sioux City to Rapid City

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

 

The best time to book a flight from Sioux City to Rapid City

Sunday is one of the best days to book for cheap flights from Sioux City to Rapid City: 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 Sioux City to Rapid City

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 Sioux City to Rapid City in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Sioux City to Rapid City 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 Sioux City to Rapid City 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

Is it cheaper to buy a plane ticket from SUX to Rapid City Regional Airport (RAP) last minute?
Being the spontaneous type is an amazing way to see the world, but it’s not necessarily the cleverest way to find a bargain airfare. It’s better to book your SUX to Rapid City Regional Airport journey well in advance rather than waiting until the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. We recommend saving that spontaneity for when you get to your destination!
What airports do you fly into for Rapid City from Sioux City?
You can travel from Sioux City to Rapid City through both Rapid City Regional Airport (RAP) and Spearfish, SD (SPF-Black Hills). Come in to land at Rapid City Regional Airport (RAP) and you’ll be roughly 9 mi to the east of Rapid City. Check in to your new digs and then discover some of this city’s renowned sights, like Watiki Water Park and Rushmore Mall.
Can I change the date of my flight from Sioux Gateway Airport (SUX) to Rapid City Regional Airport (RAP)?
You can quickly and easily make changes to your Sioux Gateway Airport (SUX) to Rapid City Regional Airport (RAP) ticket via the Expedia Trips portal. But before you begin, review the rules in your itinerary to find out what the airline will allow you to do and if fees apply. Some airlines charge a change fee per person, in addition to any difference in fares. However, if you booked in the last 24 hours, you may be able to cancel for free and book new flights. You can also stop by our Customer Service portal for more info and to chat with our Virtual Agent.

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