$261 Cheap Flights from Las Vegas (LAS) to Watertown (ATY)

View $261 flight on Wed, Dec 17, 2025Opens in a new window

Popular airlines from Harry Reid Intl. Airport (LAS) to Watertown, SD (ATY-Watertown Regional)

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Cheap Flights from Las Vegas to Watertown (LAS-ATY)

Prices were available within the past 7 days and start at $261 for one-way flights and $244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Dec 12 - Wed, Dec 17
LAS
Las Vegas
ATY
Watertown
$244 Roundtrip, found 2 days ago
$244
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 12 from Las Vegas to Watertown, returning Wed, Dec 17, priced at $244 found 2 days ago
United
Fri, Dec 12 - Wed, Dec 17
LAS
Las Vegas
ATY
Watertown
$324 Roundtrip, found 2 days ago
$324
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 12 from Las Vegas to Watertown, returning Wed, Dec 17, priced at $324 found 2 days ago
Delta
Fri, Dec 12 - Wed, Dec 17
LAS
Las Vegas
ATY
Watertown
$364 Roundtrip, found 2 days ago
$364
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Dec 12 from Las Vegas to Watertown, returning Wed, Dec 17, priced at $364 found 2 days ago
United
Fri, Dec 12 - Wed, Dec 17
LAS
Las Vegas
ATY
Watertown
$404 Roundtrip, found 2 days ago
$404
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 12 from Las Vegas to Watertown, returning Wed, Dec 17, priced at $404 found 2 days ago
Delta
Fri, May 1 - Mon, May 4
LAS
Las Vegas
ATY
Watertown
$424 Roundtrip, found 3 days ago
$424
Roundtrip
found 3 days ago
Select Delta flight, departing Fri, May 1 from Las Vegas to Watertown, returning Mon, May 4, priced at $424 found 3 days ago
Delta
Fri, Dec 12 - Wed, Dec 17
LAS
Las Vegas
ATY
Watertown
$444 Roundtrip, found 2 days ago
$444
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Dec 12 from Las Vegas to Watertown, returning Wed, Dec 17, priced at $444 found 2 days ago
Delta
Fri, Dec 12 - Sun, Dec 14
LAS
Las Vegas
ATY
Watertown
$454 Roundtrip, found 2 days ago
$454
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Dec 12 from Las Vegas to Watertown, returning Sun, Dec 14, priced at $454 found 2 days ago
United
Fri, Dec 12 - Sun, Dec 14
LAS
Las Vegas
ATY
Watertown
$487 Roundtrip, found 2 days ago
$487
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 12 from Las Vegas to Watertown, returning Sun, Dec 14, priced at $487 found 2 days ago
Delta
Fri, May 1 - Mon, May 4
LAS
Las Vegas
ATY
Watertown
$504 Roundtrip, found 3 days ago
$504
Roundtrip
found 3 days ago
Select Delta flight, departing Fri, May 1 from Las Vegas to Watertown, returning Mon, May 4, priced at $504 found 3 days ago
Delta
Fri, May 1 - Mon, May 4
LAS
Las Vegas
ATY
Watertown
$524 Roundtrip, found 3 days ago
$524
Roundtrip
found 3 days ago
Select Delta flight, departing Fri, May 1 from Las Vegas to Watertown, returning Mon, May 4, priced at $524 found 3 days ago

Frequently asked questions

How much does a flight from Harry Reid Intl. Airport (LAS) to Watertown Regional Airport (ATY) cost?
Grab a cheap one-way flight from $261 or cheap return flight from $244 from Harry Reid Intl. Airport (LAS) to Watertown Regional Airport (ATY) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Harry Reid Intl. Airport (LAS) to Watertown Regional Airport (ATY)?
December is the cheapest month to fly from LAS to ATY. Traveling during an off-peak travel window is often the key to better flight prices.
What is the cheapest airline that flies from Harry Reid Intl. Airport (LAS) to Watertown Regional Airport (ATY)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll take you from LAS to ATY. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Harry Reid Intl. Airport (LAS) to Watertown Regional Airport (ATY)?
Nonstop flights from Harry Reid Intl. Airport (LAS) to Watertown Regional Airport (ATY) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from LAS to ATY?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on various factors, including the season 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 Harry Reid Intl. Airport (LAS) to Watertown Regional Airport (ATY)?
To arrive at Watertown Regional Airport (ATY) on schedule, book a flight that leaves Harry Reid Intl. Airport (LAS) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Harry Reid Intl. Airport (LAS) to Watertown Regional Airport (ATY) last-minute?
Booking your flight from LAS to ATY right before your journey is generally more expensive. However, if there's some wiggle room with your schedule, you could snag a cheap last-minute fare.
Is it cheaper to book a LAS to ATY flight and hotel package?
You'll generally save money by securing a LAS to ATY 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 preferred accommodations and flights, consider other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Harry Reid Intl. Airport (LAS) to Watertown Regional Airport (ATY)?
If you booked your LAS to ATY flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Origin airport
Harry Reid Intl.
Destination airport
Watertown Regional
Roundtrip price
$243
Distance
1121 mi

Book with confidence

Las Vegas to Watertown Flights

The cheapest times to fly from Las Vegas to Watertown

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 Las Vegas to Watertown are during the month of December. You can find some of the cheapest flights from Las Vegas to Watertown with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Las Vegas to Watertown

Sunday is one of the best days to book for cheap flights from Las Vegas to Watertown: 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 Las Vegas to Watertown

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 Las Vegas to Watertown in 2025. You can also book with separate airlines for your outbound and return journeys, from $261 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 Las Vegas to Watertown 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 Las Vegas to Watertown 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.

 

Las Vegas to Watertown Flights

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*Available to One Key members.