$271 Cheap Flights from Harrisburg (MDT) to Watertown (ATY)

View $271 flight on Tue, Dec 16, 2025Opens in a new window

Popular airlines from Harrisburg Intl. Airport (MDT) to Watertown, SD (ATY-Watertown Regional)

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Cheap Flights from Harrisburg to Watertown (MDT-ATY)

Prices were available within the past 7 days and start at $271 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Harrisburg Intl. Airport (MDT) to Watertown Regional Airport (ATY) cost?
Lock in a cheap one-way flight from $271 or cheap return flight from Harrisburg Intl. Airport (MDT) 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 Harrisburg Intl. Airport (MDT) to Watertown Regional Airport (ATY)?
Flying in may help you find better deals, as it's the cheapest month for flights between MDT and ATY. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Harrisburg Intl. Airport (MDT) to Watertown Regional Airport (ATY)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest MDT to ATY flight.
How many flights per day from Harrisburg Intl. Airport (MDT) to Watertown Regional Airport (ATY)?
There aren't any daily nonstop flights from Harrisburg Intl. Airport (MDT) to Watertown Regional Airport (ATY). But you can book flights with layovers. Filter your search results 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 MDT to ATY?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the season, airline 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 Harrisburg Intl. Airport (MDT) to Watertown Regional Airport (ATY)?
Choose a flight from Harrisburg Intl. Airport (MDT) to Watertown Regional Airport (ATY) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Later departures 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 Harrisburg Intl. Airport (MDT) to Watertown Regional Airport (ATY) last-minute?
Booking your plane ticket from MDT to ATY right before your trip is generally more expensive. However, if you're flexible with your schedule, you could snag a cheap last-minute fare.
Is it cheaper to book a MDT to ATY flight and hotel package?
Compared with arranging flights and hotels separately, booking a MDT to ATY flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place will take the stress out of travel planning. Simply secure your flights and select from our wide range of hotels, then personalize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Harrisburg Intl. Airport (MDT) to Watertown Regional Airport (ATY)?
Typically, you can cancel or reschedule your MDT to ATY flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you want further details, visit our Customer Service portal.

Travel information

Travel information

Origin airport
Harrisburg Intl.
Destination airport
Watertown Regional
Distance
1085 mi

Book with confidence

Book with confidence

Harrisburg to Watertown Flights

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

 

The best time to book a flight from Harrisburg to Watertown

Sunday is one of the best days to book for cheap flights from Harrisburg 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 Harrisburg 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 Harrisburg to Watertown in 2025. You can also book with separate airlines for your outbound and return journeys, from $271 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 Harrisburg 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 Harrisburg 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.

 

Harrisburg to Watertown Flights

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*Available to One Key members.