$243 Cheap Flights from Watertown (ATY) to Rapid City (RAP)

View $243 flight on Wed, Jan 28, 2026Opens in a new window

Popular airlines from Watertown, SD (ATY-Watertown Regional) to Rapid City Regional Airport (RAP)

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Cheap Flights from Watertown to Rapid City (ATY-RAP)

Prices were available within the past 7 days and start at $243 for one-way flights and $292 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Jan 27 - Tue, Feb 3
ATY
Watertown
RAP
Rapid City
$292 Roundtrip, found 9 hours ago
$292
Roundtrip
found 9 hours ago
Select Delta flight, departing Tue, Jan 27 from Watertown to Rapid City, returning Tue, Feb 3, priced at $292 found 9 hours ago
Delta
Mon, Jan 26 - Tue, Feb 3
ATY
Watertown
RAP
Rapid City
$302 Roundtrip, found 9 hours ago
$302
Roundtrip
found 9 hours ago
Select Delta flight, departing Mon, Jan 26 from Watertown to Rapid City, returning Tue, Feb 3, priced at $302 found 9 hours ago
Delta
Mon, Jan 26 - Sat, Jan 31
ATY
Watertown
RAP
Rapid City
$312 Roundtrip, found 9 hours ago
$312
Roundtrip
found 9 hours ago
Select Delta flight, departing Mon, Jan 26 from Watertown to Rapid City, returning Sat, Jan 31, priced at $312 found 9 hours ago
Delta
Mon, Jan 26 - Sun, Feb 1
ATY
Watertown
RAP
Rapid City
$322 Roundtrip, found 9 hours ago
$322
Roundtrip
found 9 hours ago
Select Delta flight, departing Mon, Jan 26 from Watertown to Rapid City, returning Sun, Feb 1, priced at $322 found 9 hours ago
Delta
Tue, Nov 25 - Sat, Dec 13
ATY
Watertown
RAP
Rapid City
$332 Roundtrip, found 6 days ago
$332
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Nov 25 from Watertown to Rapid City, returning Sat, Dec 13, priced at $332 found 6 days ago
Delta
Sat, Oct 25 - Mon, Nov 10
ATY
Watertown
RAP
Rapid City
$342 Roundtrip, found 2 days ago
$342
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Oct 25 from Watertown to Rapid City, returning Mon, Nov 10, priced at $342 found 2 days ago
Delta
Mon, Oct 27 - Mon, Nov 3
ATY
Watertown
RAP
Rapid City
$352 Roundtrip, found 15 hours ago
$352
Roundtrip
found 15 hours ago
Select Delta flight, departing Mon, Oct 27 from Watertown to Rapid City, returning Mon, Nov 3, priced at $352 found 15 hours ago
Delta
Tue, Oct 21 - Thu, Nov 6
ATY
Watertown
RAP
Rapid City
$362 Roundtrip, found 6 days ago
$362
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Oct 21 from Watertown to Rapid City, returning Thu, Nov 6, priced at $362 found 6 days ago
Delta
Tue, Oct 21 - Mon, Nov 3
ATY
Watertown
RAP
Rapid City
$372 Roundtrip, found 6 days ago
$372
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Oct 21 from Watertown to Rapid City, returning Mon, Nov 3, priced at $372 found 6 days ago
United
Mon, Jan 26 - Wed, Feb 18
ATY
Watertown
RAP
Rapid City
$508 Roundtrip, found 9 hours ago
$508
Roundtrip
found 9 hours ago
Select United flight, departing Mon, Jan 26 from Watertown to Rapid City, returning Wed, Feb 18, priced at $508 found 9 hours ago

Alternative airports near Rapid City

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Rapid City Regional RAP. Cheapest and Closest option available. Average driving time to city center is 16 minutes. Flights from $352
RAP
Rapid City Regional
CheapestClosest
Average driving time to city center16 min
Flights from $352

Frequently asked questions

How much does a flight from Watertown Regional Airport (ATY) to Rapid City Regional Airport (RAP) cost?
Get a cheap one-way flight from $243 or cheap return flight from $292 from Watertown Regional Airport (ATY) to Rapid City Regional Airport (RAP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Watertown Regional Airport (ATY) to Rapid City Regional Airport (RAP)?
Traveling in January can help you save, as it's the cheapest month for flights between ATY and RAP. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Watertown Regional Airport (ATY) to Rapid City Regional Airport (RAP)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll take you from ATY to RAP. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Watertown Regional Airport (ATY) to Rapid City Regional Airport (RAP)?
There aren't any daily nonstop flights available from Watertown Regional Airport (ATY) to Rapid City Regional Airport (RAP). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from ATY to RAP?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on a range of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Watertown Regional Airport (ATY) to Rapid City Regional Airport (RAP)?
To touch down at Rapid City Regional Airport (RAP) on time, opt for a flight that leaves Watertown Regional Airport (ATY) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Watertown Regional Airport (ATY) to Rapid City Regional Airport (RAP) last-minute?
Booking your plane ticket from ATY to RAP just before your journey is usually more expensive. But if you're flexible with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book an ATY to RAP flight and hotel package?
Compared with arranging hotels and flights separately, booking an ATY to RAP flight and hotel package with Expedia could lead to significant savings. Better still, managing everything in one place will take the hassle out of travel planning. Just secure your flights and choose from our extensive range of hotels, then personalize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Watertown Regional Airport (ATY) to Rapid City Regional Airport (RAP)?
If you reserved your ATY to RAP flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you have, 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 if you want more information.

Travel information

Origin airport
Watertown Regional
Destination airport
Rapid City Regional
Roundtrip price
$291
Distance
296 mi

Book with confidence

Watertown to Rapid City Flights

The cheapest times to fly from Watertown 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 Watertown to Rapid City are during the month of January. You can find some of the cheapest flights from Watertown to Rapid City with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Watertown 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 Watertown 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 Watertown to Rapid City in 2025. You can also book with separate airlines for your outbound and return journeys, from $243 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 Watertown 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 Watertown 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.

 

Watertown to Rapid City Flights

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*Available to One Key members.