$1,323 Cheap Flights from Wilmington (ILM) to Watertown (ATY)

View $1,323 flight on Sat, Mar 21, 2026Opens in a new window

Popular airlines from Wilmington Intl. Airport (ILM) to Watertown, SD (ATY-Watertown Regional)

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Cheap Flights from Wilmington to Watertown (ILM-ATY)

Prices were available within the past 7 days and start at $1,323 for one-way flights and $304 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Nov 19 - Tue, Dec 9
ILM
Wilmington
ATY
Watertown
$304 Roundtrip, found 5 days ago
$304
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Nov 19 from Wilmington to Watertown, returning Tue, Dec 9, priced at $304 found 5 days ago
Delta
Wed, Nov 19 - Sun, Dec 7
ILM
Wilmington
ATY
Watertown
$329 Roundtrip, found 5 days ago
$329
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Nov 19 from Wilmington to Watertown, returning Sun, Dec 7, priced at $329 found 5 days ago
Delta
Wed, Nov 19 - Sun, Nov 23
ILM
Wilmington
ATY
Watertown
$359 Roundtrip, found 5 days ago
$359
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Nov 19 from Wilmington to Watertown, returning Sun, Nov 23, priced at $359 found 5 days ago
Delta
Tue, Nov 18 - Tue, Dec 9
ILM
Wilmington
ATY
Watertown
$398 Roundtrip, found 5 days ago
$398
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Nov 18 from Wilmington to Watertown, returning Tue, Dec 9, priced at $398 found 5 days ago
Delta
Tue, Nov 18 - Sun, Dec 7
ILM
Wilmington
ATY
Watertown
$423 Roundtrip, found 5 days ago
$423
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Nov 18 from Wilmington to Watertown, returning Sun, Dec 7, priced at $423 found 5 days ago
Delta
Mon, Nov 24 - Tue, Dec 9
ILM
Wilmington
ATY
Watertown
$451 Roundtrip, found 5 days ago
$451
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Nov 24 from Wilmington to Watertown, returning Tue, Dec 9, priced at $451 found 5 days ago
Delta
Tue, Nov 18 - Sun, Nov 23
ILM
Wilmington
ATY
Watertown
$453 Roundtrip, found 5 days ago
$453
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Nov 18 from Wilmington to Watertown, returning Sun, Nov 23, priced at $453 found 5 days ago
Delta
Wed, Nov 19 - Tue, Dec 2
ILM
Wilmington
ATY
Watertown
$462 Roundtrip, found 5 days ago
$462
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Nov 19 from Wilmington to Watertown, returning Tue, Dec 2, priced at $462 found 5 days ago
Delta
Wed, Nov 19 - Thu, Dec 11
ILM
Wilmington
ATY
Watertown
$473 Roundtrip, found 5 days ago
$473
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Nov 19 from Wilmington to Watertown, returning Thu, Dec 11, priced at $473 found 5 days ago
Delta
Mon, Nov 24 - Sun, Dec 7
ILM
Wilmington
ATY
Watertown
$476 Roundtrip, found 5 days ago
$476
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Nov 24 from Wilmington to Watertown, returning Sun, Dec 7, priced at $476 found 5 days ago
Delta
Sun, Nov 23 - Tue, Dec 9
ILM
Wilmington
ATY
Watertown
$478 Roundtrip, found 5 days ago
$478
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Nov 23 from Wilmington to Watertown, returning Tue, Dec 9, priced at $478 found 5 days ago
Delta
Wed, Nov 19 - Fri, Dec 5
ILM
Wilmington
ATY
Watertown
$486 Roundtrip, found 5 days ago
$486
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Nov 19 from Wilmington to Watertown, returning Fri, Dec 5, priced at $486 found 5 days ago
Delta
Tue, Nov 18 - Mon, Dec 8
ILM
Wilmington
ATY
Watertown
$493 Roundtrip, found 5 days ago
$493
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Nov 18 from Wilmington to Watertown, returning Mon, Dec 8, priced at $493 found 5 days ago
Delta
Sun, Nov 23 - Sun, Dec 7
ILM
Wilmington
ATY
Watertown
$503 Roundtrip, found 5 days ago
$503
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Nov 23 from Wilmington to Watertown, returning Sun, Dec 7, priced at $503 found 5 days ago
Delta
Wed, Nov 19 - Wed, Dec 3
ILM
Wilmington
ATY
Watertown
$516 Roundtrip, found 5 days ago
$516
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Nov 19 from Wilmington to Watertown, returning Wed, Dec 3, priced at $516 found 5 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 $551
ATY
Watertown Regional
CheapestClosest
Average driving time to city center6 min
Flights from $551

Frequently asked questions

How much does a flight from Wilmington Intl. Airport (ILM) to Watertown Regional Airport (ATY) cost?
Snag a cheap one-way flight from $1,323 or cheap return flight from $304 from Wilmington Intl. Airport (ILM) 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 Wilmington Intl. Airport (ILM) to Watertown Regional Airport (ATY)?
November is the cheapest month to fly from ILM to ATY. Traveling during an off-peak travel window is often the key to finding better fares.
What is the cheapest airline that flies from Wilmington Intl. Airport (ILM) to Watertown Regional Airport (ATY)?
To find the cheapest airline flying from ILM to ATY, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Wilmington Intl. Airport (ILM) to Watertown Regional Airport (ATY)?
There aren't any daily nonstop flights available from Wilmington Intl. Airport (ILM) to Watertown Regional Airport (ATY). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from ILM to ATY?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can change depending on the season, 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 Wilmington Intl. Airport (ILM) to Watertown Regional Airport (ATY)?
To avoid potential delays on the Wilmington Intl. Airport (ILM) to Watertown Regional Airport (ATY) route, aim to travel before 3 PM. Departures after this time are 22% more likely to be canceled.**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 Wilmington Intl. Airport (ILM) to Watertown Regional Airport (ATY) last-minute?
Booking your ticket from ILM to ATY shortly before your trip is usually more expensive. But if you're flexible with your departure dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book an ILM to ATY flight and hotel package?
Compared with arranging hotels and flights separately, booking an ILM to ATY flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place takes the hassle out of planning your trip. Just pick your flights and choose from our wide range of hotels, then personalize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Wilmington Intl. Airport (ILM) to Watertown Regional Airport (ATY)?
Generally, it's possible to reschedule or cancel your ILM to ATY flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Wilmington Intl.
Destination airport
Watertown Regional
Roundtrip price
$303
Distance
1256 mi

Book with confidence

Wilmington to Watertown Flights

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

 

The best time to book a flight from Wilmington to Watertown

Sunday is one of the best days to book for cheap flights from Wilmington 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 Wilmington 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 Wilmington to Watertown in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,323 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 Wilmington 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 Wilmington 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.

 

Wilmington to Watertown Flights

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*Available to One Key members.