$448 Cheap Flights from Eugene (EUG) to Watertown (ATY)

View $448 flight on Sun, Nov 16, 2025Opens in a new window

Popular airlines from Mahlon Sweet Field Airport (EUG) to Watertown, SD (ATY-Watertown Regional)

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Cheap Flights from Eugene to Watertown (EUG-ATY)

Prices were available within the past 7 days and start at $448 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 Mahlon Sweet Field Airport (EUG) to Watertown Regional Airport (ATY) cost?
Get a cheap one-way flight from $448 or cheap return flight from Mahlon Sweet Field Airport (EUG) to Watertown Regional Airport (ATY) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Mahlon Sweet Field Airport (EUG) to Watertown Regional Airport (ATY)?
The cheapest month to fly from EUG to ATY is , when demand is low. Off-peak season is often when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Mahlon Sweet Field Airport (EUG) to Watertown Regional Airport (ATY)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest EUG to ATY flight.
How many flights per day from Mahlon Sweet Field Airport (EUG) to Watertown Regional Airport (ATY)?
There aren't any daily direct flights available from Mahlon Sweet Field Airport (EUG) to Watertown Regional Airport (ATY). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from EUG to ATY?
You'll generally 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 Mahlon Sweet Field Airport (EUG) to Watertown Regional Airport (ATY)?
Book a flight from Mahlon Sweet Field Airport (EUG) to Watertown Regional Airport (ATY) that leaves before 3 PM to reduce the risk of cancellations. Departures later than this 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 Mahlon Sweet Field Airport (EUG) to Watertown Regional Airport (ATY) last-minute?
Last-minute bookings from EUG to ATY are usually more expensive. To lock in the best rates, start searching for flights as soon as possible. That being said, if you're flexible with your travel plans, it's possible to score a cheap ticket right before your journey.
Is it cheaper to book an EUG to ATY flight and hotel package?
Securing an EUG to ATY flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Choose from our extensive range of stays and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Mahlon Sweet Field Airport (EUG) to Watertown Regional Airport (ATY)?
Usually, it's possible to reschedule or cancel your EUG to ATY flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
Eugene
Destination airport
Watertown Regional
Distance
1278 mi

Book with confidence

Book with confidence

Eugene to Watertown Flights

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

 

The best time to book a flight from Eugene to Watertown

Sunday is one of the best days to book for cheap flights from Eugene 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 Eugene 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 Eugene to Watertown in 2025. You can also book with separate airlines for your outbound and return journeys, from $448 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 Eugene 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 Eugene 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.

 

Eugene to Watertown Flights

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*Available to One Key members.