$464 Cheap Flights from Honolulu (HNL) to Watertown (ATY)

View $464 flight on Mon, May 4, 2026Opens in a new window

Popular airlines from Daniel K. Inouye Intl. Airport (HNL) 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 Honolulu to Watertown (HNL-ATY)

Prices were available within the past 7 days and start at $464 for one-way flights and $911 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, May 4 - Sat, May 9
HNL
Oahu
ATY
Watertown
$911 Roundtrip, found 6 hours ago
$911
Roundtrip
found 6 hours ago
Select Delta flight, departing Mon, May 4 from Oahu to Watertown, returning Sat, May 9, priced at $911 found 6 hours ago
Delta
Mon, May 4 - Sat, May 9
HNL
Oahu
ATY
Watertown
$1,046 Roundtrip, found 6 hours ago
$1,046
Roundtrip
found 6 hours ago
Select Delta flight, departing Mon, May 4 from Oahu to Watertown, returning Sat, May 9, priced at $1,046 found 6 hours ago
United
Mon, May 4 - Sat, May 9
HNL
Oahu
ATY
Watertown
$1,061 Roundtrip, found 6 hours ago
$1,061
Roundtrip
found 6 hours ago
Select United flight, departing Mon, May 4 from Oahu to Watertown, returning Sat, May 9, priced at $1,061 found 6 hours ago
United
Mon, May 4 - Sat, May 9
HNL
Oahu
ATY
Watertown
$1,081 Roundtrip, found 6 hours ago
$1,081
Roundtrip
found 6 hours ago
Select United flight, departing Mon, May 4 from Oahu to Watertown, returning Sat, May 9, priced at $1,081 found 6 hours ago
Delta
Mon, May 4 - Sat, May 9
HNL
Oahu
ATY
Watertown
$1,089 Roundtrip, found 6 hours ago
$1,089
Roundtrip
found 6 hours ago
Select Delta flight, departing Mon, May 4 from Oahu to Watertown, returning Sat, May 9, priced at $1,089 found 6 hours ago
United
Mon, May 4 - Sat, May 9
HNL
Oahu
ATY
Watertown
$1,121 Roundtrip, found 6 hours ago
$1,121
Roundtrip
found 6 hours ago
Select United flight, departing Mon, May 4 from Oahu to Watertown, returning Sat, May 9, priced at $1,121 found 6 hours ago
United
Mon, May 4 - Sat, May 9
HNL
Oahu
ATY
Watertown
$1,141 Roundtrip, found 6 hours ago
$1,141
Roundtrip
found 6 hours ago
Select United flight, departing Mon, May 4 from Oahu to Watertown, returning Sat, May 9, priced at $1,141 found 6 hours ago
United
Mon, May 4 - Sat, May 9
HNL
Oahu
ATY
Watertown
$1,173 Roundtrip, found 6 hours ago
$1,173
Roundtrip
found 6 hours ago
Select United flight, departing Mon, May 4 from Oahu to Watertown, returning Sat, May 9, priced at $1,173 found 6 hours ago
Delta
Mon, May 4 - Sat, May 9
HNL
Oahu
ATY
Watertown
$1,175 Roundtrip, found 6 hours ago
$1,175
Roundtrip
found 6 hours ago
Select Delta flight, departing Mon, May 4 from Oahu to Watertown, returning Sat, May 9, priced at $1,175 found 6 hours ago
Alaska Airlines
Mon, May 4 - Sat, May 9
HNL
Oahu
ATY
Watertown
$1,234 Roundtrip, found 6 hours ago
$1,234
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Mon, May 4 from Oahu to Watertown, returning Sat, May 9, priced at $1,234 found 6 hours ago

Frequently asked questions

How much does a flight from Daniel K. Inouye Intl. Airport (HNL) to Watertown Regional Airport (ATY) cost?
Lock in a cheap one-way flight from $464 or cheap return flight from $911 from Daniel K. Inouye Intl. Airport (HNL) to Watertown Regional Airport (ATY) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Daniel K. Inouye Intl. Airport (HNL) to Watertown Regional Airport (ATY)?
The cheapest month to fly from HNL to ATY is May, when there's less demand. Off-peak months are usually when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Daniel K. Inouye Intl. Airport (HNL) to Watertown Regional Airport (ATY)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest HNL to ATY flight.
How many flights per day from Daniel K. Inouye Intl. Airport (HNL) to Watertown Regional Airport (ATY)?
There are no daily nonstop flights departing from Daniel K. Inouye Intl. Airport (HNL) to Watertown Regional Airport (ATY). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from HNL to ATY?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change depending on a range of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Daniel K. Inouye Intl. Airport (HNL) to Watertown Regional Airport (ATY)?
Opt for a flight from Daniel K. Inouye Intl. Airport (HNL) to Watertown Regional Airport (ATY) that takes off before 3 PM to reduce the risk of cancellations and delays. Later departures 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 Daniel K. Inouye Intl. Airport (HNL) to Watertown Regional Airport (ATY) last-minute?
Booking your ticket from HNL to ATY just before your getaway is typically more expensive. But if there's some wiggle room with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book a HNL to ATY flight and hotel package?
Booking a HNL to ATY flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our impressive range of hotels and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Daniel K. Inouye Intl. Airport (HNL) to Watertown Regional Airport (ATY)?
In most cases, you can cancel or reschedule your HNL to ATY flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need more details, visit our Customer Service portal.

Travel information

Origin airport
Daniel K. Inouye Intl.
Destination airport
Watertown Regional
Airlines serving
Delta, United
Roundtrip price
$910
Distance
3773 mi

Book with confidence

Honolulu to Watertown Flights

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

 

The best time to book a flight from Honolulu to Watertown

Sunday is one of the best days to book for cheap flights from Honolulu 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 Honolulu 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 Honolulu to Watertown in 2025. You can also book with separate airlines for your outbound and return journeys, from $464 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 Honolulu 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 Honolulu 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.

 

Honolulu to Watertown Flights

Explore a world of travel with Expedia

*Available to One Key members.