Cheap Flights from Watertown (ATY) to Washington (IAD)

Popular airlines from Watertown, SD (ATY-Watertown Regional) to Washington Dulles Intl. Airport (IAD)

Frequently asked questions

How much does a flight from Watertown Regional Airport (ATY) to Washington Dulles Intl. Airport (IAD) cost?
Lock in a cheap one-way flight or cheap return flight from Watertown Regional Airport (ATY) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Watertown Regional Airport (ATY) to Washington Dulles Intl. Airport (IAD)?
Planning your getaway for may help you find better deals, as it's the cheapest month for flights between ATY and IAD. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Watertown Regional Airport (ATY) to Washington Dulles Intl. Airport (IAD)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest ATY to IAD flight.
How many flights per day from Watertown Regional Airport (ATY) to Washington Dulles Intl. Airport (IAD)?
Direct flights from Watertown Regional Airport (ATY) to Washington Dulles Intl. Airport (IAD) 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 travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ATY to IAD?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary based on the time of year, 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 Watertown Regional Airport (ATY) to Washington Dulles Intl. Airport (IAD)?
To arrive at Washington Dulles Intl. Airport (IAD) on time, opt for a flight that leaves from Watertown Regional Airport (ATY) 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 Watertown Regional Airport (ATY) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your ticket from ATY to IAD right before your journey is typically more expensive. However, if there's some wiggle room with your departure dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book an ATY to IAD flight and hotel package?
Opting for an ATY to IAD flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our wide range of accommodations and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Watertown Regional Airport (ATY) to Washington Dulles Intl. Airport (IAD)?
In most cases, you can cancel or modify your ATY to IAD flight. However, additional charges may apply, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you need more details, head to our Customer Service portal.

Travel information

Origin airport
Watertown Regional
Destination airport
Washington Dulles Intl.
Distance
1090 mi

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Watertown to Washington Flights

The cheapest times to fly from Watertown to Washington

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

 

The best time to book a flight from Watertown to Washington

Sunday is one of the best days to book for cheap flights from Watertown to Washington: 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 Watertown to Washington

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 Watertown to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Watertown to Washington 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 Watertown to Washington 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.

 

Watertown to Washington Flights

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*Available to One Key members.