$322 Cheap Flights from Charleston (CHS) to Watertown (ATY)

View $322 flight on Thu, Oct 30, 2025Opens in a new window

Popular airlines from Charleston Intl. Airport (CHS) to Watertown, SD (ATY-Watertown Regional)

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Cheap Flights from Charleston to Watertown (CHS-ATY)

Prices were available within the past 7 days and start at $322 for one-way flights and $395 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Nov 1 - Tue, Nov 4
CHS
Charleston
ATY
Watertown
$395 Roundtrip, found 5 days ago
$395
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 1 from Charleston to Watertown, returning Tue, Nov 4, priced at $395 found 5 days ago
Delta
Sat, Nov 1 - Sun, Nov 2
CHS
Charleston
ATY
Watertown
$405 Roundtrip, found 5 days ago
$405
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 1 from Charleston to Watertown, returning Sun, Nov 2, priced at $405 found 5 days ago
Delta
Fri, Oct 31 - Sun, Nov 2
CHS
Charleston
ATY
Watertown
$415 Roundtrip, found 5 days ago
$415
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Oct 31 from Charleston to Watertown, returning Sun, Nov 2, priced at $415 found 5 days ago
Delta
Thu, Oct 30 - Tue, Nov 4
CHS
Charleston
ATY
Watertown
$420 Roundtrip, found 5 days ago
$420
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Oct 30 from Charleston to Watertown, returning Tue, Nov 4, priced at $420 found 5 days ago
Delta
Sat, Nov 1 - Wed, Nov 5
CHS
Charleston
ATY
Watertown
$426 Roundtrip, found 5 days ago
$426
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 1 from Charleston to Watertown, returning Wed, Nov 5, priced at $426 found 5 days ago
Delta
Fri, Oct 31 - Sat, Nov 1
CHS
Charleston
ATY
Watertown
$427 Roundtrip, found 5 days ago
$427
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Oct 31 from Charleston to Watertown, returning Sat, Nov 1, priced at $427 found 5 days ago
Delta
Thu, Oct 30 - Sun, Nov 2
CHS
Charleston
ATY
Watertown
$430 Roundtrip, found 5 days ago
$430
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Oct 30 from Charleston to Watertown, returning Sun, Nov 2, priced at $430 found 5 days ago
Delta
Tue, Oct 28 - Mon, Nov 3
CHS
Charleston
ATY
Watertown
$436 Roundtrip, found 5 days ago
$436
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Oct 28 from Charleston to Watertown, returning Mon, Nov 3, priced at $436 found 5 days ago
Delta
Wed, Oct 29 - Tue, Nov 4
CHS
Charleston
ATY
Watertown
$436 Roundtrip, found 5 days ago
$436
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Oct 29 from Charleston to Watertown, returning Tue, Nov 4, priced at $436 found 5 days ago
United
Mon, Oct 27 - Fri, Nov 7
CHS
Charleston
ATY
Watertown
$622 Roundtrip, found 5 days ago
$622
Roundtrip
found 5 days ago
Select United flight, departing Mon, Oct 27 from Charleston to Watertown, returning Fri, Nov 7, priced at $622 found 5 days ago

Frequently asked questions

How much does a flight from Charleston Intl. Airport (CHS) to Watertown Regional Airport (ATY) cost?
Secure a cheap one-way flight from $322 or cheap return flight from $395 from Charleston Intl. Airport (CHS) to Watertown Regional Airport (ATY) 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 Charleston Intl. Airport (CHS) to Watertown Regional Airport (ATY)?
Planning your trip for November is a good way to save, as it's the cheapest month for flights between CHS and ATY. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Charleston Intl. Airport (CHS) to Watertown Regional Airport (ATY)?
To find the cheapest airline flying from CHS to ATY, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Charleston Intl. Airport (CHS) to Watertown Regional Airport (ATY)?
You'll need to book a flight with a layover if you're traveling from Charleston Intl. Airport (CHS) to Watertown Regional Airport (ATY). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from CHS to ATY?
Typically you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* But this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Charleston Intl. Airport (CHS) to Watertown Regional Airport (ATY)?
To touch down at Watertown Regional Airport (ATY) on schedule, choose a flight that leaves from Charleston Intl. Airport (CHS) before 3 PM. The chance 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 Charleston Intl. Airport (CHS) to Watertown Regional Airport (ATY) last-minute?
Waiting until just before your departure to book a ticket from CHS to ATY often results in higher prices. While you may come across some last-minute offers, there's no guarantee. Allow some flexibility in your schedule to maximize your chances of landing a bargain.
Is it cheaper to book a CHS to ATY flight and hotel package?
You'll generally save money by securing a CHS 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 easy to manage it all in one place. After selecting your ideal accommodations and flights, you can add extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Charleston Intl. Airport (CHS) to Watertown Regional Airport (ATY)?
If you booked your CHS to ATY flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

Travel information

Travel information

Origin airport
Charleston Intl.
Destination airport
Watertown Regional
Roundtrip price
$395
Distance
1236 mi

Book with confidence

Book with confidence

Charleston to Watertown Flights

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

 

The best time to book a flight from Charleston to Watertown

Sunday is one of the best days to book for cheap flights from Charleston 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 Charleston 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 Charleston to Watertown in 2025. You can also book with separate airlines for your outbound and return journeys, from $322 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 Charleston 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 Charleston 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.

 

Charleston to Watertown Flights

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Explore a world of travel with Expedia

*Available to One Key members.