$261 Cheap Flights from Baltimore (BWI) to Watertown (ATY)

View $261 flight on Tue, Aug 19, 2025Opens in a new window

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

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Cheap Flights from Baltimore to Watertown (BWI-ATY)

Prices were available within the past 7 days and start at $261 for one-way flights and $244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Aug 26 - Sat, Aug 30
BWI
Baltimore
ATY
Watertown
$244 Roundtrip, found 2 days ago
$244
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Aug 26 from Baltimore to Watertown, returning Sat, Aug 30, priced at $244 found 2 days ago
Delta
Wed, Aug 27 - Sat, Aug 30
BWI
Baltimore
ATY
Watertown
$259 Roundtrip, found 2 days ago
$259
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Aug 27 from Baltimore to Watertown, returning Sat, Aug 30, priced at $259 found 2 days ago
Delta
Fri, Aug 8 - Wed, Aug 13
BWI
Baltimore
ATY
Watertown
$269 Roundtrip, found 6 days ago
$269
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Aug 8 from Baltimore to Watertown, returning Wed, Aug 13, priced at $269 found 6 days ago
Delta
Sat, Aug 9 - Sat, Aug 16
BWI
Baltimore
ATY
Watertown
$284 Roundtrip, found 4 days ago
$284
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Aug 9 from Baltimore to Watertown, returning Sat, Aug 16, priced at $284 found 4 days ago
Delta
Sat, Aug 9 - Fri, Aug 15
BWI
Baltimore
ATY
Watertown
$289 Roundtrip, found 2 days ago
$289
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Aug 9 from Baltimore to Watertown, returning Fri, Aug 15, priced at $289 found 2 days ago
Delta
Mon, Aug 25 - Sat, Aug 30
BWI
Baltimore
ATY
Watertown
$294 Roundtrip, found 2 days ago
$294
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Aug 25 from Baltimore to Watertown, returning Sat, Aug 30, priced at $294 found 2 days ago
Delta
Tue, Aug 26 - Sun, Aug 31
BWI
Baltimore
ATY
Watertown
$304 Roundtrip, found 2 days ago
$304
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Aug 26 from Baltimore to Watertown, returning Sun, Aug 31, priced at $304 found 2 days ago
Delta
Sat, Aug 9 - Tue, Aug 12
BWI
Baltimore
ATY
Watertown
$309 Roundtrip, found 4 days ago
$309
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Aug 9 from Baltimore to Watertown, returning Tue, Aug 12, priced at $309 found 4 days ago
Delta
Sat, Aug 30 - Tue, Sep 2
BWI
Baltimore
ATY
Watertown
$318 Roundtrip, found 2 days ago
$318
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Aug 30 from Baltimore to Watertown, returning Tue, Sep 2, priced at $318 found 2 days ago
United
Wed, Aug 20 - Sun, Aug 24
BWI
Baltimore
ATY
Watertown
$440 Roundtrip, found 3 days ago
$440
Roundtrip
found 3 days ago
Select United flight, departing Wed, Aug 20 from Baltimore to Watertown, returning Sun, Aug 24, priced at $440 found 3 days ago

Alternative airports near Watertown

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Watertown Regional ATY. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $525
ATY
Watertown Regional
CheapestClosest
Average driving time to city center6 min
Flights from $525
Flights from Baltimore (BWI) to Watertown (ATY)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Watertown Regional
Roundtrip price
$243
Distance
1119 mi

Baltimore to Watertown Flights

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

 

The best time to book a flight from Baltimore to Watertown

Sunday is one of the best days to book for cheap flights from Baltimore 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 Baltimore 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 Baltimore to Watertown in 2025. You can also book with separate airlines for your outbound and return journeys, from $261 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 Baltimore 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 Baltimore 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Watertown Regional Airport (ATY) cost?
Discover the latest flight deals from BWI to ATY by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BWI to ATY?
The cheapest flights from BWI to ATY are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BWI to ATY?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BWI to ATY. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Watertown Regional Airport (ATY)?
Direct flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) 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 filter tool. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BWI to ATY?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Watertown Regional Airport (ATY)?
To avoid potential delays on the Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Watertown Regional Airport (ATY) route, travel before 3 PM. Later departures have a 22% higher chance of cancellation.**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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Watertown Regional Airport (ATY) last-minute?
Booking your ticket from BWI to ATY right before your journey is typically more expensive. However, if you're flexible with your schedule, you could land a cheap last-minute fare.
Is it cheaper to book a BWI to ATY flight and hotel package?
You'll generally save money by securing a BWI 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 everything in one convenient place. Once you've chosen your preferred accommodations and flights, consider adding extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Watertown Regional Airport (ATY)?
In most instances, you can reschedule or cancel your BWI to ATY flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you want more information, go to our Customer Service portal.

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*Available to One Key members.