$295 Cheap Flights from Wilmington (ILM) to Watertown (ATY)

View $295 flight on Fri, Oct 17, 2025Opens 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 $295 for one-way flights and $354 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Sep 9 - Tue, Sep 30
ILM
Wilmington
ATY
Watertown
$354 Roundtrip, found 3 days ago
$354
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Sep 9 from Wilmington to Watertown, returning Tue, Sep 30, priced at $354 found 3 days ago
Delta
Tue, Sep 9 - Tue, Sep 23
ILM
Wilmington
ATY
Watertown
$379 Roundtrip, found 3 days ago
$379
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Sep 9 from Wilmington to Watertown, returning Tue, Sep 23, priced at $379 found 3 days ago
Delta
Tue, Sep 9 - Tue, Sep 16
ILM
Wilmington
ATY
Watertown
$409 Roundtrip, found 3 days ago
$409
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Sep 9 from Wilmington to Watertown, returning Tue, Sep 16, priced at $409 found 3 days ago
Delta
Fri, Oct 17 - Tue, Oct 21
ILM
Wilmington
ATY
Watertown
$419 Roundtrip, found 2 days ago
$419
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Oct 17 from Wilmington to Watertown, returning Tue, Oct 21, priced at $419 found 2 days ago
Delta
Fri, Oct 17 - Sat, Oct 18
ILM
Wilmington
ATY
Watertown
$433 Roundtrip, found 2 days ago
$433
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Oct 17 from Wilmington to Watertown, returning Sat, Oct 18, priced at $433 found 2 days ago
Delta
Tue, Oct 14 - Tue, Oct 21
ILM
Wilmington
ATY
Watertown
$443 Roundtrip, found 2 days ago
$443
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 14 from Wilmington to Watertown, returning Tue, Oct 21, priced at $443 found 2 days ago
Delta
Tue, Sep 9 - Sat, Sep 27
ILM
Wilmington
ATY
Watertown
$449 Roundtrip, found 3 days ago
$449
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Sep 9 from Wilmington to Watertown, returning Sat, Sep 27, priced at $449 found 3 days ago
Delta
Fri, Sep 12 - Tue, Sep 23
ILM
Wilmington
ATY
Watertown
$458 Roundtrip, found 2 days ago
$458
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Sep 12 from Wilmington to Watertown, returning Tue, Sep 23, priced at $458 found 2 days ago
Delta
Thu, Oct 16 - Tue, Oct 21
ILM
Wilmington
ATY
Watertown
$473 Roundtrip, found 2 days ago
$473
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Oct 16 from Wilmington to Watertown, returning Tue, Oct 21, priced at $473 found 2 days ago
United
Wed, Oct 15 - Mon, Oct 20
ILM
Wilmington
ATY
Watertown
$1,001 Roundtrip, found 2 days ago
$1,001
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 15 from Wilmington to Watertown, returning Mon, Oct 20, priced at $1,001 found 2 days ago
Flights from Wilmington (ILM) to Watertown (ATY)
Origin airport
Wilmington Intl.
Destination airport
Watertown Regional
Roundtrip price
$353
Distance
1256 mi

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 September. 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 $295 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.

 

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 $295 or cheap return flight from $354 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)?
September 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.

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*Available to One Key members.