$218 Cheap Flights from Milwaukee (MKE) to Watertown (ATY)

View $218 flight on Mon, Oct 20, 2025Opens in a new window

Popular airlines from General Mitchell Intl. Airport (MKE) to Watertown, SD (ATY-Watertown Regional)

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Cheap Flights from Milwaukee to Watertown (MKE-ATY)

Prices were available within the past 7 days and start at $218 for one-way flights and $219 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Oct 14 - Mon, Oct 20
MKE
Milwaukee
ATY
Watertown
$219 Roundtrip, found 1 day ago
$219
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Oct 14 from Milwaukee to Watertown, returning Mon, Oct 20, priced at $219 found 1 day ago
Delta
Tue, Oct 14 - Sun, Oct 19
MKE
Milwaukee
ATY
Watertown
$224 Roundtrip, found 1 day ago
$224
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Oct 14 from Milwaukee to Watertown, returning Sun, Oct 19, priced at $224 found 1 day ago
Delta
Fri, Oct 10 - Mon, Oct 20
MKE
Milwaukee
ATY
Watertown
$234 Roundtrip, found 1 day ago
$234
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 10 from Milwaukee to Watertown, returning Mon, Oct 20, priced at $234 found 1 day ago
Delta
Fri, Oct 10 - Fri, Oct 17
MKE
Milwaukee
ATY
Watertown
$239 Roundtrip, found 1 day ago
$239
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 10 from Milwaukee to Watertown, returning Fri, Oct 17, priced at $239 found 1 day ago
Delta
Sun, Oct 12 - Mon, Oct 20
MKE
Milwaukee
ATY
Watertown
$279 Roundtrip, found 1 day ago
$279
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Oct 12 from Milwaukee to Watertown, returning Mon, Oct 20, priced at $279 found 1 day ago
Delta
Sun, Oct 12 - Sun, Oct 19
MKE
Milwaukee
ATY
Watertown
$284 Roundtrip, found 1 day ago
$284
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Oct 12 from Milwaukee to Watertown, returning Sun, Oct 19, priced at $284 found 1 day ago
Delta
Thu, Oct 16 - Mon, Oct 20
MKE
Milwaukee
ATY
Watertown
$408 Roundtrip, found 1 day ago
$408
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Oct 16 from Milwaukee to Watertown, returning Mon, Oct 20, priced at $408 found 1 day ago
Delta
Thu, Oct 16 - Sun, Oct 19
MKE
Milwaukee
ATY
Watertown
$413 Roundtrip, found 1 day ago
$413
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Oct 16 from Milwaukee to Watertown, returning Sun, Oct 19, priced at $413 found 1 day ago
United
Mon, May 18 - Fri, May 22
MKE
Milwaukee
ATY
Watertown
$440 Roundtrip, found 5 days ago
$440
Roundtrip
found 5 days ago
Select United flight, departing Mon, May 18 from Milwaukee to Watertown, returning Fri, May 22, priced at $440 found 5 days ago
United
Wed, Nov 19 - Sun, Nov 23
MKE
Milwaukee
ATY
Watertown
$447 Roundtrip, found 1 day ago
$447
Roundtrip
found 1 day ago
Select United flight, departing Wed, Nov 19 from Milwaukee to Watertown, returning Sun, Nov 23, priced at $447 found 1 day 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 $219
ATY
Watertown Regional
CheapestClosest
Average driving time to city center6 min
Flights from $219
Flights from Milwaukee (MKE) to Watertown (ATY)
Origin airport
General Mitchell Intl.
Destination airport
Watertown Regional
Airlines serving
Delta
Roundtrip price
$218
Distance
480 mi

Milwaukee to Watertown Flights

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

 

The best time to book a flight from Milwaukee to Watertown

Sunday is one of the best days to book for cheap flights from Milwaukee 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 Milwaukee 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 Milwaukee to Watertown in 2025. You can also book with separate airlines for your outbound and return journeys, from $218 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 Milwaukee 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 Milwaukee 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 General Mitchell Intl. Airport (MKE) to Watertown Regional Airport (ATY) cost?
Lock in a cheap one-way flight from $218 or cheap return flight from $219 from General Mitchell Intl. Airport (MKE) to Watertown Regional Airport (ATY) 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 General Mitchell Intl. Airport (MKE) to Watertown Regional Airport (ATY)?
The cheapest month to fly from MKE to ATY is October, when demand is low. Off-peak months are usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from General Mitchell Intl. Airport (MKE) to Watertown Regional Airport (ATY)?
To find the cheapest airline that'll fly you from MKE to ATY, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from General Mitchell Intl. Airport (MKE) to Watertown Regional Airport (ATY)?
There aren't any daily direct flights from General Mitchell Intl. Airport (MKE) to Watertown Regional Airport (ATY). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time.
What day of the week has the most flights from MKE to ATY?
Usually you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* But this can vary based on the time of year, carrier 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 General Mitchell Intl. Airport (MKE) to Watertown Regional Airport (ATY)?
Book a flight from General Mitchell Intl. Airport (MKE) to Watertown Regional Airport (ATY) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**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 General Mitchell Intl. Airport (MKE) to Watertown Regional Airport (ATY) last-minute?
Last-minute bookings from MKE to ATY are usually more expensive. To lock in the lowest rates, start searching for flights ahead of time. That being said, if you can play around with your travel dates, it's possible to land a cheap ticket just before your departure.
Is it cheaper to book a MKE to ATY flight and hotel package?
Compared with arranging hotels and flights separately, booking a MKE to ATY flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the stress out of travel planning. Just pick your flights and choose from our wide range of hotels, then personalize your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from General Mitchell Intl. Airport (MKE) to Watertown Regional Airport (ATY)?
It's generally possible to reschedule or cancel your MKE to ATY flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.