$261 Cheap Flights from Houston (IAH) to Watertown (ATY)

View $261 flight on Mon, Feb 9, 2026Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Watertown, SD (ATY-Watertown Regional)

Cheap Flights from Houston to Watertown (IAH-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
Fri, Oct 31 - Sun, Nov 16
IAH
Houston
ATY
Watertown
$244 Roundtrip, found 2 days ago
$244
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Oct 31 from Houston to Watertown, returning Sun, Nov 16, priced at $244 found 2 days ago
Delta
Sat, Nov 1 - Sun, Nov 16
IAH
Houston
ATY
Watertown
$254 Roundtrip, found 2 days ago
$254
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Nov 1 from Houston to Watertown, returning Sun, Nov 16, priced at $254 found 2 days ago
Delta
Wed, Oct 15 - Sun, Nov 2
IAH
Houston
ATY
Watertown
$259 Roundtrip, found 2 days ago
$259
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Oct 15 from Houston to Watertown, returning Sun, Nov 2, priced at $259 found 2 days ago
Delta
Wed, Oct 15 - Tue, Nov 4
IAH
Houston
ATY
Watertown
$269 Roundtrip, found 2 days ago
$269
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Oct 15 from Houston to Watertown, returning Tue, Nov 4, priced at $269 found 2 days ago
Delta
Wed, Oct 22 - Fri, Nov 14
IAH
Houston
ATY
Watertown
$294 Roundtrip, found 2 days ago
$294
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Oct 22 from Houston to Watertown, returning Fri, Nov 14, priced at $294 found 2 days ago
Delta
Mon, Oct 6 - Tue, Oct 21
IAH
Houston
ATY
Watertown
$299 Roundtrip, found 2 days ago
$299
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Oct 6 from Houston to Watertown, returning Tue, Oct 21, priced at $299 found 2 days ago
Delta
Thu, Oct 30 - Sun, Nov 16
IAH
Houston
ATY
Watertown
$304 Roundtrip, found 2 days ago
$304
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Oct 30 from Houston to Watertown, returning Sun, Nov 16, priced at $304 found 2 days ago
Delta
Fri, Nov 14 - Thu, Dec 4
IAH
Houston
ATY
Watertown
$309 Roundtrip, found 2 days ago
$309
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Nov 14 from Houston to Watertown, returning Thu, Dec 4, priced at $309 found 2 days ago
Delta
Wed, Dec 31 - Tue, Jan 13
IAH
Houston
ATY
Watertown
$318 Roundtrip, found 2 days ago
$318
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Dec 31 from Houston to Watertown, returning Tue, Jan 13, priced at $318 found 2 days ago
United
Thu, Dec 18 - Mon, Dec 22
IAH
Houston
ATY
Watertown
$318 Roundtrip, found 2 days ago
$318
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 18 from Houston to Watertown, returning Mon, Dec 22, priced at $318 found 2 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 $259
ATY
Watertown Regional
CheapestClosest
Average driving time to city center6 min
Flights from $259

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Watertown Regional Airport (ATY) cost?
Get a cheap one-way flight from $261 or cheap return flight from $244 from George Bush Intercontinental Airport (IAH) 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 George Bush Intercontinental Airport (IAH) to Watertown Regional Airport (ATY)?
Flying in October is a good way to save, as it's the cheapest month for flights between IAH and ATY. You'll usually find the lowest prices during off-peak months.
What is the cheapest airline that flies from George Bush Intercontinental Airport (IAH) to Watertown Regional Airport (ATY)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest IAH to ATY flight.
How many flights per day from George Bush Intercontinental Airport (IAH) to Watertown Regional Airport (ATY)?
Direct flights from George Bush Intercontinental Airport (IAH) to Watertown Regional Airport (ATY) 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 dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAH to ATY?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary based 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 George Bush Intercontinental Airport (IAH) to Watertown Regional Airport (ATY)?
To touch down at Watertown Regional Airport (ATY) on time, select a flight that leaves from George Bush Intercontinental Airport (IAH) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 George Bush Intercontinental Airport (IAH) to Watertown Regional Airport (ATY) last-minute?
Booking your ticket from IAH to ATY shortly before your journey is usually more expensive. But if there's some wiggle room with your schedule, you could land a cheap last-minute fare.
Is it cheaper to book an IAH to ATY flight and hotel package?
You'll generally save money by securing an IAH to ATY flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've selected your preferred accommodations and flights, consider other add-ons like car rentals, tours and activities.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Watertown Regional Airport (ATY)?
If you booked your IAH to ATY flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Travel information

Origin airport
George Bush Intercontinental
Destination airport
Watertown Regional
Roundtrip price
$243
Distance
1036 mi

Book with confidence

Book with confidence

Houston to Watertown Flights

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

 

The best time to book a flight from Houston to Watertown

Sunday is one of the best days to book for cheap flights from Houston 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 Houston 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 Houston 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 Houston 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 Houston 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.

 

Houston to Watertown Flights

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Explore a world of travel with Expedia

*Available to One Key members.