$285 Cheap Flights from Portland (PDX) to Watertown (ATY)

View $285 flight on Sat, Jan 3, 2026Opens in a new window

Popular airlines from Portland International Airport (PDX) to Watertown, SD (ATY-Watertown Regional)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Portland to Watertown (PDX-ATY)

Prices were available within the past 7 days and start at $285 for one-way flights and $254 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Nov 6 - Sun, Nov 16
PDX
Portland
ATY
Watertown
$254 Roundtrip, found 2 days ago
$254
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Nov 6 from Portland to Watertown, returning Sun, Nov 16, priced at $254 found 2 days ago
Delta
Fri, Jan 23 - Wed, Feb 11
PDX
Portland
ATY
Watertown
$264 Roundtrip, found 9 hours ago
$264
Roundtrip
found 9 hours ago
Select Delta flight, departing Fri, Jan 23 from Portland to Watertown, returning Wed, Feb 11, priced at $264 found 9 hours ago
Delta
Thu, Jan 22 - Wed, Feb 11
PDX
Portland
ATY
Watertown
$269 Roundtrip, found 9 hours ago
$269
Roundtrip
found 9 hours ago
Select Delta flight, departing Thu, Jan 22 from Portland to Watertown, returning Wed, Feb 11, priced at $269 found 9 hours ago
Delta
Sat, Nov 1 - Sun, Nov 16
PDX
Portland
ATY
Watertown
$279 Roundtrip, found 2 days ago
$279
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Nov 1 from Portland to Watertown, returning Sun, Nov 16, priced at $279 found 2 days ago
Delta
Thu, Nov 27 - Thu, Dec 4
PDX
Portland
ATY
Watertown
$288 Roundtrip, found 1 day ago
$288
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Nov 27 from Portland to Watertown, returning Thu, Dec 4, priced at $288 found 1 day ago
Delta
Sun, Jan 18 - Wed, Feb 4
PDX
Portland
ATY
Watertown
$289 Roundtrip, found 9 hours ago
$289
Roundtrip
found 9 hours ago
Select Delta flight, departing Sun, Jan 18 from Portland to Watertown, returning Wed, Feb 4, priced at $289 found 9 hours ago
Delta
Sat, Nov 15 - Thu, Dec 4
PDX
Portland
ATY
Watertown
$293 Roundtrip, found 2 days ago
$293
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Nov 15 from Portland to Watertown, returning Thu, Dec 4, priced at $293 found 2 days ago
Delta
Tue, Feb 10 - Wed, Feb 25
PDX
Portland
ATY
Watertown
$307 Roundtrip, found 9 hours ago
$307
Roundtrip
found 9 hours ago
Select Delta flight, departing Tue, Feb 10 from Portland to Watertown, returning Wed, Feb 25, priced at $307 found 9 hours ago
Delta
Wed, Feb 11 - Wed, Feb 25
PDX
Portland
ATY
Watertown
$312 Roundtrip, found 9 hours ago
$312
Roundtrip
found 9 hours ago
Select Delta flight, departing Wed, Feb 11 from Portland to Watertown, returning Wed, Feb 25, priced at $312 found 9 hours ago
United
Thu, Mar 5 - Mon, Mar 16
PDX
Portland
ATY
Watertown
$334 Roundtrip, found 9 hours ago
$334
Roundtrip
found 9 hours ago
Select United flight, departing Thu, Mar 5 from Portland to Watertown, returning Mon, Mar 16, priced at $334 found 9 hours 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 $339
ATY
Watertown Regional
CheapestClosest
Average driving time to city center6 min
Flights from $339
Flights from Portland (PDX) to Watertown (ATY)
Origin airport
Portland Intl.
Destination airport
Watertown Regional
Airlines serving
Delta, United
Roundtrip price
$253
Distance
1232 mi

Portland to Watertown Flights

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

 

The best time to book a flight from Portland to Watertown

Sunday is one of the best days to book for cheap flights from Portland 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 Portland 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 Portland to Watertown in 2025. You can also book with separate airlines for your outbound and return journeys, from $285 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 Portland 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 Portland 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 Portland Intl. Airport (PDX) to Watertown Regional Airport (ATY) cost?
Snag a cheap one-way flight from $285 or cheap return flight from $254 from Portland Intl. Airport (PDX) to Watertown Regional Airport (ATY) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Watertown Regional Airport (ATY)?
Flying in November may help you find better deals, as it's the cheapest month for flights between PDX and ATY. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Watertown Regional Airport (ATY)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest PDX to ATY flight.
How many flights per day from Portland Intl. Airport (PDX) to Watertown Regional Airport (ATY)?
You'll need to book a flight with a layover if you're traveling from Portland Intl. Airport (PDX) to Watertown Regional Airport (ATY). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from PDX to ATY?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary depending 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 Portland Intl. Airport (PDX) to Watertown Regional Airport (ATY)?
To avoid possible delays on the Portland Intl. Airport (PDX) to Watertown Regional Airport (ATY) route, fly before 3 PM. Flights after this time have a 22% higher chance of cancellation.**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 Portland Intl. Airport (PDX) to Watertown Regional Airport (ATY) last-minute?
Booking your plane ticket from PDX to ATY shortly before your trip is typically 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 a PDX to ATY flight and hotel package?
Opting for a PDX to ATY flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Select from our extensive range of stays and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Watertown Regional Airport (ATY)?
In most instances, you can reschedule or cancel your PDX to ATY flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want more information, head to our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.