$239 Cheap Flights from Dayton (DAY) to Watertown (ATY)

View $239 flight on Fri, Oct 30, 2026Opens in a new window

Popular airlines from Dayton Intl. Airport (DAY) to Watertown, SD (ATY-Watertown Regional)

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Cheap Flights from Dayton to Watertown (DAY-ATY)

Prices were available within the past 7 days and start at $239 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Dayton (DAY) to Watertown (ATY)
Origin airport
James M. Cox Dayton Intl.
Destination airport
Watertown Regional
Distance
744 mi

Dayton to Watertown Flights

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

 

The best time to book a flight from Dayton to Watertown

Sunday is one of the best days to book for cheap flights from Dayton 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 Dayton 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 Dayton to Watertown in 2026. You can also book with separate airlines for your outbound and return journeys, from $239 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 Dayton 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 Dayton 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.

 

Frequently asked questions

How much does a flight from James M. Cox Dayton Intl. Airport (DAY) to Watertown Regional Airport (ATY) cost?
Snag a cheap one-way flight from $239 or cheap return flight from James M. Cox Dayton Intl. Airport (DAY) 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 James M. Cox Dayton Intl. Airport (DAY) to Watertown Regional Airport (ATY)?
is the least expensive month to fly from DAY to ATY. Timing your trip outside of the busy season is often the key to finding better fares.
What is the cheapest airline that flies from James M. Cox Dayton Intl. Airport (DAY) to Watertown Regional Airport (ATY)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest DAY to ATY flight.
How many flights per day from James M. Cox Dayton Intl. Airport (DAY) to Watertown Regional Airport (ATY)?
Direct flights from James M. Cox Dayton Intl. Airport (DAY) to Watertown Regional Airport (ATY) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DAY to ATY?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from James M. Cox Dayton Intl. Airport (DAY) to Watertown Regional Airport (ATY)?
Choose a flight from James M. Cox Dayton Intl. Airport (DAY) to Watertown Regional Airport (ATY) that takes off before 3 PM to reduce the likelihood of delays. Departures after this hour 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 James M. Cox Dayton Intl. Airport (DAY) to Watertown Regional Airport (ATY) last-minute?
Waiting until right before your break to book your flight from DAY to ATY often results in higher prices. While you might find some last-minute deals, they're not always guaranteed. Keep your travel schedule open for the best chance of scoring a bargain.
Is it cheaper to book a DAY to ATY flight and hotel package?
Compared with arranging hotels and flights separately, booking a DAY to ATY flight and hotel package with Expedia could lead to significant savings. Better still, having it all in one place takes the hassle out of planning your trip. Simply secure your flights and choose from our wide range of stays, then personalize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from James M. Cox Dayton Intl. Airport (DAY) to Watertown Regional Airport (ATY)?
Typically, it's possible to cancel or reschedule your DAY to ATY flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.