HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Denver

$123+ Cheap flights from Watertown to Denver (ATY - DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
ATY — DEN
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Watertown to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Watertown to Denver

Cheapest flights from Watertown to Denver
Explore the most affordable flight options available from Watertown to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/136:45 pm
ATY
-
DEN
Nonstop1h 55m
United Airlines
Mon 3/162:10 pm
DEN
-
ATY
Nonstop1h 47m
United Airlines
Deal found 1/25$240
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/226:40 pm
ATY
-
DEN
Nonstop1h 58m
United Airlines
Mon 5/252:30 pm
DEN
-
ATY
Nonstop1h 44m
United Airlines
Deal found 1/27$270
This Delta deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:10 am
ATY
-
DEN
1 stop4h 09m
Delta
Thu 8/62:20 pm
DEN
-
ATY
1 stop4h 10m
Delta
Deal found 1/24$292
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:45 pm
ATY
-
DEN
Nonstop1h 55m
United Airlines
Mon 3/92:10 pm
DEN
-
ATY
Nonstop1h 47m
United Airlines
Deal found 1/27$340
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/126:30 pm
ATY
-
DEN
Nonstop1h 55m
United Airlines
Sat 2/142:10 pm
DEN
-
ATY
Nonstop1h 47m
United Airlines
Deal found 1/26$365
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/306:25 pm
ATY
-
DEN
Nonstop2h 07m
United Airlines
Sun 2/12:10 pm
DEN
-
ATY
Nonstop1h 47m
United Airlines
Deal found 1/26$440
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/115:10 am
ATY
-
DEN
2 stops11h 05m
Delta
Sat 2/142:42 pm
DEN
-
ATY
1 stop5h 41m
Delta
Deal found 1/26$495
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/105:10 am
ATY
-
DEN
1 stop6h 26m
Delta
Sat 2/142:42 pm
DEN
-
ATY
1 stop5h 41m
Delta
Deal found 1/26$557
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/65:10 am
ATY
-
DEN
1 stop4h 09m
Delta
Sun 8/92:20 pm
DEN
-
ATY
1 stop4h 10m
Delta
Deal found 1/26$577
This Delta deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:10 am
ATY
-
DEN
1 stop6h 03m
Delta
Sat 8/152:20 pm
DEN
-
ATY
1 stop4h 10m
Delta
Deal found 1/25$619
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/155:10 am
ATY
-
DEN
1 stop4h 09m
Delta
Mon 5/182:20 pm
DEN
-
ATY
1 stop4h 10m
Delta
Deal found 1/26$620

Find flight deals from Watertown to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Watertown (ATY) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$240
(United Airlines)

One-way from

$123
(United Airlines)

Popular in

November

Cheapest in

May

Average price

$231

Good round-trip deal

$274 or less

Good one-way deal

$394 or less
Provider with most accurate pricing for Watertown-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Watertown-Denver Intl flights.
Search Deals
From Watertown to Denver Intl
Search Deals
One-way flight from Watertown to Denver Intl
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Watertown to Denver Intl.
Search Deals
Price to beat on a one-way flight from Watertown to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Watertown to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
Use the filters below to find and compare flights from Watertown to Denver that are best for you.

Fly from

Watertown

Fly to

Denver

Route

Depart

Return

Price

WatertownDenver

ATY - DEN

ATYDEN

Watertown

Wed 2/11

6:25 pm-7:32 pm

Nonstop2h 07m

Denver Intl

Sat 2/14

2:10 pm-4:57 pm

Nonstop1h 47m

$240

WatertownDenver

ATY - DEN

ATYDEN

Watertown

Fri 3/13

6:45 pm-7:40 pm

Nonstop1h 55m

Denver Intl

Mon 3/16

2:10 pm-4:57 pm

Nonstop1h 47m

$240

WatertownDenver

ATY - DEN

ATYDEN

Watertown

Thu 2/12

6:30 pm-7:25 pm

Nonstop1h 55m

Denver Intl

Mon 2/16

2:10 pm-4:57 pm

Nonstop1h 47m

$240

WatertownDenver

ATY - DEN

ATYDEN

Watertown

Tue 2/10

6:25 pm-7:32 pm

Nonstop2h 07m

Denver Intl

Sat 2/14

2:10 pm-4:57 pm

Nonstop1h 47m

$240

WatertownDenver

ATY - DEN

ATYDEN

Watertown

Thu 3/5

6:45 pm-7:40 pm

Nonstop1h 55m

Denver Intl

Sun 3/8

2:10 pm-4:57 pm

Nonstop1h 47m

$270

WatertownDenver

ATY - DEN

ATYDEN

Watertown

Wed 2/11

6:25 pm-7:32 pm

Nonstop2h 07m

Denver Intl

Sun 2/15

2:10 pm-4:57 pm

Nonstop1h 47m

$270

WatertownDenver

ATY - DEN

ATYDEN

Watertown

Sat 2/7

6:25 pm-7:32 pm

Nonstop2h 07m

Denver Intl

Tue 2/10

2:10 pm-4:57 pm

Nonstop1h 47m

$270

WatertownDenver

ATY - DEN

ATYDEN

Watertown

Fri 3/6

6:45 pm-7:40 pm

Nonstop1h 55m

Denver Intl

Mon 3/9

2:10 pm-4:57 pm

Nonstop1h 47m

$340

WatertownDenver

ATY - DEN

ATYDEN

Watertown

Mon 2/9

6:25 pm-7:32 pm

Nonstop2h 07m

$123

WatertownDenver

ATY - DEN

ATYDEN

Watertown

Sat 2/7

6:25 pm-7:32 pm

Nonstop2h 07m

$348

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 12 results
1
2

Compare providers for flights from Watertown to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Watertown to Denver in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Watertown-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Watertown-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Watertown-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Watertown-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Watertown-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Watertown to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Watertown with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Watertown to Denver

What is the cheapest month to book a flight from Watertown to Denver?

Currently, March is the cheapest month in which you can book a flight from Watertown to Denver (average of $46). Flying from Watertown to Denver in May is currently the most expensive (average of $116). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ATY to DEN?

Find hourly flight availability from Watertown to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 27, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Watertown to Denver as you normally would.

How much does it cost to fly round-trip from Watertown to Denver?

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated January 27, 2026.
See what other customers who have flown with Denver Air Connection and United Airlines from Watertown to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Denver Air Connection
8.0
Very good

Crew

9.0

Food

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.0

Comfort

8.5
Denver Air Connection
8.0
Very good
Denver Air Connection
8.0
Very good

Crew

9.0

Food

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.0

Comfort

8.5
United Airlines
7.4
Good
9,206 reviews
Denver Air Connection
8.0
Very good

Crew

9.0

Food

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.0

Comfort

8.5

Related info for your journey

Find useful and relevant information for your journey from Watertown to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Watertown to Denver?

    If you book a flight from Watertown to Denver, you will be flying from Watertown to Denver Intl. Flights to Denver Intl (DEN) from Watertown (ATY) take 1h 55m for a nonstop flight. There is 1 flight from Watertown to Denver per day from 2 airlines.

  • How popular is this Watertown to Denver flight route?

    The Watertown to Denver Intl flight path was viewed by 4 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Watertown to Denver?

    A quick flight from Watertown to Denver can take about 2h 07m. United Airlines provides one of the quickest options available for as low as $240. Watertown and Denver are separated by a distance of 518 mi. Most flights are nonstop.

  • What are the cheapest airlines flying from Watertown to Denver round-trip?

    Flying on Denver Air Connection is currently your cheapest option to Denver, with prices starting at $178. Another option worth looking into is United Airlines, starting at $240 round trip. Denver Air Connection is currently priced 31% below the average price you’ll pay for this route.

  • What are the cheapest flights from Watertown to Denver?

    While on average a flight from Watertown to Denver is generally $379, our data shows the cheapest flight currently is $270. When looking at the most popular route, (Watertown - Denver Intl), you can expect to pay $240 for that flight.

  • Can I find deals for flights from Watertown to Denver that include hotel bookings?

    Yes. In addition to deals on Watertown to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Watertown to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Watertown to Denver.

  • Can I find deals for business class flights from Watertown to Denver?

    Yes. Cheapflights offers flight deals from Watertown to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Watertown to Denver?

    Currently, March is the cheapest month in which you can book a flight from Watertown to Denver (average of $46). Flying from Watertown to Denver in May is currently the most expensive (average of $116). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Lakewood
Broomfield
Westminster
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Cripple Creek
Winter Park
Central City
Glendale
Manitou Springs
Frisco
Fort Morgan
Brighton
Evergreen

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Watertown to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Sioux Falls to Denver flights
Rapid City to Denver flights
Sioux Falls to Colorado Springs flights
Pierre to Denver flights
Aberdeen to Denver flights

Top 2 airlines flying from Watertown to Denver

Discover the top 2 airlines that operate flights from Watertown to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Denver Air ConnectionCheapest$178Average$224FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$240Average$270FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.