$325 Cheap Flights from Ottawa (YOW) to Watertown (ATY)

View $325 flight on Wed, Nov 12, 2025Opens in a new window

Popular airlines from Ottawa International Airport (YOW) to Watertown, SD (ATY-Watertown Regional)

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Cheap Flights from Ottawa to Watertown (YOW-ATY)

Prices were available within the past 7 days and start at $325 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Ottawa (YOW) to Watertown (ATY)
Origin airport
Macdonald-Cartier Intl.
Destination airport
Watertown Regional
Distance
1045 mi

Ottawa to Watertown Flights

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

 

The best time to book a flight from Ottawa to Watertown

Sunday is one of the best days to book for cheap flights from Ottawa 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 Ottawa 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 Ottawa to Watertown in 2025. You can also book with separate airlines for your outbound and return journeys, from $325 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 Ottawa 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 Ottawa 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 Macdonald-Cartier Intl. Airport (YOW) to Watertown Regional Airport (ATY) cost?
Lock in a cheap one-way flight from $325 or cheap return flight from Macdonald-Cartier Intl. Airport (YOW) 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 Macdonald-Cartier Intl. Airport (YOW) to Watertown Regional Airport (ATY)?
is the cheapest month to fly from YOW to ATY. Planning your trip for the off-season is often the key to scoring lower fares.
What is the cheapest airline that flies from Macdonald-Cartier Intl. Airport (YOW) to Watertown Regional Airport (ATY)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from YOW to ATY. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from Macdonald-Cartier Intl. Airport (YOW) to Watertown Regional Airport (ATY)?
Direct flights from Macdonald-Cartier Intl. Airport (YOW) 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 YOW 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 Macdonald-Cartier Intl. Airport (YOW) to Watertown Regional Airport (ATY)?
To arrive at Watertown Regional Airport (ATY) on schedule, select a flight that leaves from Macdonald-Cartier Intl. Airport (YOW) 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 Macdonald-Cartier Intl. Airport (YOW) to Watertown Regional Airport (ATY) last-minute?
Last-minute bookings from YOW to ATY are usually more expensive. To secure the lowest prices, start searching for flights well in advance. That said, if your travel plans are flexible, it's possible to land a cheap ticket right before your journey.
Is it cheaper to book a YOW to ATY flight and hotel package?
You'll generally save money by securing a YOW 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 it all in one place. After choosing your ideal accommodations and flights, you can add extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from Macdonald-Cartier Intl. Airport (YOW) to Watertown Regional Airport (ATY)?
If you booked your YOW to ATY flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the fare type 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, head to our Customer Service portal for further details.

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*Available to One Key members.