$309 Cheap Flights from Spokane (GEG) to Watertown (ATY)

View $309 flight on Wed, Sep 10, 2025Opens in a new window

Popular airlines from Spokane International Airport (GEG) to Watertown, SD (ATY-Watertown Regional)

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Cheap Flights from Spokane to Watertown (GEG-ATY)

Prices were available within the past 7 days and start at $309 for one-way flights and $375 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Oct 25 - Sat, Nov 8
GEG
Spokane
ATY
Watertown
$375 Roundtrip, found 3 days ago
$375
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Oct 25 from Spokane to Watertown, returning Sat, Nov 8, priced at $375 found 3 days ago
Delta
Sat, Oct 25 - Wed, Nov 12
GEG
Spokane
ATY
Watertown
$381 Roundtrip, found 3 days ago
$381
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Oct 25 from Spokane to Watertown, returning Wed, Nov 12, priced at $381 found 3 days ago
Delta
Tue, Oct 21 - Fri, Oct 31
GEG
Spokane
ATY
Watertown
$385 Roundtrip, found 6 days ago
$385
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Oct 21 from Spokane to Watertown, returning Fri, Oct 31, priced at $385 found 6 days ago
Delta
Wed, Oct 22 - Tue, Nov 4
GEG
Spokane
ATY
Watertown
$387 Roundtrip, found 6 days ago
$387
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Oct 22 from Spokane to Watertown, returning Tue, Nov 4, priced at $387 found 6 days ago
Delta
Fri, Oct 3 - Tue, Oct 7
GEG
Spokane
ATY
Watertown
$392 Roundtrip, found 1 day ago
$392
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 3 from Spokane to Watertown, returning Tue, Oct 7, priced at $392 found 1 day ago
Delta
Thu, Oct 16 - Fri, Oct 31
GEG
Spokane
ATY
Watertown
$395 Roundtrip, found 6 days ago
$395
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Oct 16 from Spokane to Watertown, returning Fri, Oct 31, priced at $395 found 6 days ago
Delta
Thu, Oct 23 - Wed, Nov 12
GEG
Spokane
ATY
Watertown
$397 Roundtrip, found 3 days ago
$397
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Oct 23 from Spokane to Watertown, returning Wed, Nov 12, priced at $397 found 3 days ago
Delta
Thu, Sep 4 - Wed, Sep 24
GEG
Spokane
ATY
Watertown
$402 Roundtrip, found 2 days ago
$402
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Sep 4 from Spokane to Watertown, returning Wed, Sep 24, priced at $402 found 2 days ago
Delta
Fri, Oct 3 - Thu, Oct 9
GEG
Spokane
ATY
Watertown
$406 Roundtrip, found 1 day ago
$406
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 3 from Spokane to Watertown, returning Thu, Oct 9, priced at $406 found 1 day ago
United
Sat, Sep 6 - Fri, Sep 19
GEG
Spokane
ATY
Watertown
$468 Roundtrip, found 2 days ago
$468
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 6 from Spokane to Watertown, returning Fri, Sep 19, priced at $468 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 $426
ATY
Watertown Regional
CheapestClosest
Average driving time to city center6 min
Flights from $426
Flights from Spokane (GEG) to Watertown (ATY)
Origin airport
Spokane Intl.
Destination airport
Watertown Regional
Airlines serving
Delta, United
Roundtrip price
$375
Distance
987 mi

Spokane to Watertown Flights

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

 

The best time to book a flight from Spokane to Watertown

Sunday is one of the best days to book for cheap flights from Spokane 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 Spokane 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 Spokane to Watertown in 2025. You can also book with separate airlines for your outbound and return journeys, from $309 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 Spokane 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 Spokane 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 Spokane Intl. Airport (GEG) to Watertown Regional Airport (ATY) cost?
Grab a cheap one-way flight from $309 or cheap return flight from $375 from Spokane Intl. Airport (GEG) 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 Spokane Intl. Airport (GEG) to Watertown Regional Airport (ATY)?
October is the most affordable month to fly from GEG to ATY. Planning your trip for the off-season is often the key to finding better fares.
What is the cheapest airline that flies from Spokane Intl. Airport (GEG) to Watertown Regional Airport (ATY)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest GEG to ATY flight.
How many flights per day from Spokane Intl. Airport (GEG) to Watertown Regional Airport (ATY)?
There aren't any daily direct flights available from Spokane Intl. Airport (GEG) to Watertown Regional Airport (ATY). But you can book 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 GEG to ATY?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on various factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Spokane Intl. Airport (GEG) to Watertown Regional Airport (ATY)?
To land at Watertown Regional Airport (ATY) on schedule, book a flight that takes off from Spokane Intl. Airport (GEG) before 3 PM. The chance 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 Spokane Intl. Airport (GEG) to Watertown Regional Airport (ATY) last-minute?
Last-minute fares from GEG to ATY are typically more expensive. To secure the best prices, start searching for flights as early as possible. That being said, if you're flexible with your travel dates, it's possible to score a cheap ticket right before you leave.
Is it cheaper to book a GEG to ATY flight and hotel package?
You can save money by booking a GEG 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 simple to manage it all in one place. Once you've chosen your preferred flights and accommodations, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Spokane Intl. Airport (GEG) to Watertown Regional Airport (ATY)?
If you reserved your GEG to ATY flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

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*Available to One Key members.