Which airlines fly to Watertown?

When flying to Watertown from United States, momondo travelers will most often fly with one of these popular airlines: United Airlines, American Airlines, Delta or Allegiant Air. Depending on what airport in United States you fly from, you may be able to find flights with any of these popular airlines.

$240 Cheap Flights to Watertown in 2026

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Find the cheapest flights from the United States to Watertown

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Cheap round-trip flights

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2:10 pm - 5:00 pmDEN Denver Intl-ATY Watertown

1h 50mnonstop

6:25 pm - 7:40 pmATY Watertown-DEN Denver Intl

2h 15mnonstop

$240United Airlines

Fri, Oct 30 - Mon, Nov 2

7:45 am - 10:35 amDEN Denver Intl-ATY Watertown

1h 50mnonstop

6:15 pm - 7:13 pmATY Watertown-DEN Denver Intl

1h 58mnonstop

$240United Airlines

Sat, Nov 28 - Sat, Dec 5

2:10 pm - 4:59 pmDEN Denver Intl-ATY Watertown

1h 49mnonstop

6:25 pm - 7:27 pmATY Watertown-DEN Denver Intl

2h 02mnonstop

$240United Airlines

Tue, Sep 22 - Sat, Sep 26

2:10 pm - 4:54 pmDEN Denver Intl-ATY Watertown

1h 44mnonstop

6:15 pm - 7:13 pmATY Watertown-DEN Denver Intl

1h 58mnonstop

$240United Airlines

Thu, Jan 14 - Thu, Jan 21

8:15 am - 11:05 amDEN Denver Intl-ATY Watertown

1h 50mnonstop

11:40 am - 12:42 pmATY Watertown-DEN Denver Intl

2h 02mnonstop

$240United Airlines

Mon, Oct 5 - Mon, Oct 12

8:15 am - 11:05 amDEN Denver Intl-ATY Watertown

1h 50mnonstop

11:10 am - 12:25 pmATY Watertown-DEN Denver Intl

2h 15mnonstop

$240United Airlines

Thu, Oct 1 - Thu, Nov 5

2:10 pm - 4:54 pmDEN Denver Intl-ATY Watertown

1h 44mnonstop

6:15 pm - 7:13 pmATY Watertown-DEN Denver Intl

1h 58mnonstop

$270United Airlines

Sat, Dec 12 - Tue, Dec 15

8:15 am - 11:05 amDEN Denver Intl-ATY Watertown

1h 50mnonstop

6:25 pm - 7:27 pmATY Watertown-DEN Denver Intl

2h 02mnonstop

$270United Airlines

Fri, Sep 25 - Tue, Sep 29

1:25 pm - 7:28 pmDEN Denver Intl-ATY Watertown

5h 03m1 stop Minneapolis St Paul

6:45 am - 12:04 pmATY Watertown-DEN Denver Intl

6h 19m1 stop Minneapolis St Paul

$280Delta

Fri, Oct 30 - Mon, Nov 2

10:45 am - 7:26 pmDEN Denver Intl-ATY Watertown

7h 41m2 stops Salt Lake City Minneapolis St Paul

6:55 am - 10:05 amATY Watertown-DEN Denver Intl

4h 10m1 stop Minneapolis St Paul

$1,245Delta

Tue, Sep 22 - Sat, Sep 26

Fly from

Route

Depart

Return

Price

Cheapest round-trip

DenverWatertown

DEN Denver Intl - ATY Watertown

DENATY

Denver Intl

Fri 10/30

2:10 pm-5:00 pm

Nonstop1h 50m

Watertown

Mon 11/2

6:25 pm-7:40 pm

Nonstop2h 15m

$240

DenverWatertown

DEN Denver Intl - ATY Watertown

DENATY

Denver Intl

Sat 11/28

7:45 am-10:35 am

Nonstop1h 50m

Watertown

Sat 12/5

6:15 pm-7:13 pm

Nonstop1h 58m

$240

DenverWatertown

DEN Denver Intl - ATY Watertown

DENATY

Denver Intl

Tue 9/22

2:10 pm-4:59 pm

Nonstop1h 49m

Watertown

Sat 9/26

6:25 pm-7:27 pm

Nonstop2h 02m

$240

Quickest round-trip

DenverWatertown

DEN Denver Intl - ATY Watertown

DENATY

Denver Intl

Thu 1/14

2:10 pm-4:54 pm

Nonstop1h 44m

Watertown

Thu 1/21

6:15 pm-7:13 pm

Nonstop1h 58m

$240

DenverWatertown

DEN Denver Intl - ATY Watertown

DENATY

Denver Intl

Mon 10/5

8:15 am-11:05 am

Nonstop1h 50m

Watertown

Mon 10/12

11:40 am-12:42 pm

Nonstop2h 02m

$240

DenverWatertown

DEN Denver Intl - ATY Watertown

DENATY

Denver Intl

Thu 10/1

8:15 am-11:05 am

Nonstop1h 50m

Watertown

Thu 11/5

11:10 am-12:25 pm

Nonstop2h 15m

$240

DenverWatertown

DEN Denver Intl - ATY Watertown

DENATY

Denver Intl

Sat 12/12

2:10 pm-4:54 pm

Nonstop1h 44m

Watertown

Tue 12/15

6:15 pm-7:13 pm

Nonstop1h 58m

$270

DenverWatertown

DEN Denver Intl - ATY Watertown

DENATY

Denver Intl

Fri 9/25

8:15 am-11:05 am

Nonstop1h 50m

Watertown

Tue 9/29

6:25 pm-7:27 pm

Nonstop2h 02m

$270

DenverWatertown

DEN Denver Intl - ATY Watertown

DENATY

Denver Intl

Fri 10/30

1:25 pm-7:28 pm

1 stop5h 03m

Watertown

Mon 11/2

6:45 am-12:04 pm

1 stop6h 19m

$280

DenverWatertown

DEN Denver Intl - ATY Watertown

DENATY

Denver Intl

Tue 9/22

10:45 am-7:26 pm

2 stops7h 41m

Watertown

Sat 9/26

6:55 am-10:05 am

1 stop4h 10m

$1,245

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Watertown flights insights and trends

Explore insights for your Watertown flight to craft the best travel plan

How long does it take to fly to Watertown?

Average flight duration from United States to Watertown depends on which airport you fly into and out of. Flying from Los Angeles to Sioux Falls Joe Foss Field is 5h 13m on average, while flying from Miami to Sioux Falls Joe Foss Field is 7h 18m on average. Sioux Falls Joe Foss Field is the most popular airport in Watertown.

Cheapest flights to Watertown

Find the cheapest flights to Watertown from your nearest city or airport

Find flights from Los Angeles to Sioux Falls

Cheap Watertown flight deals and tips

Summary info about Watertown flight prices, duration and airlines

Best Round-Trip Price	$240
Fastest flight time	1h 49m

The best round-trip flight price to Watertown from United States in the last 5 days is $240 (Denver Intl to Watertown).

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The fastest flight to Watertown from United States takes 1h 49m (Denver Intl to Watertown).

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Frequently asked questions about flying to Watertown

Is there an alternative airport near Watertown?

Those flying to Watertown could potentially find better pricing at Watertown Airport (2 mi from Watertown city center), Huron Howes Airport (65 mi from Watertown city center) or Aberdeen Airport (74 mi from Watertown city center) depending on the month and departure airport.

When did momondo last update prices for flights to Watertown Airport?

Prices for flights to Watertown Airport were last updated today.

How many operators does momondo search for flights to Watertown Airport?

As of September 2026, there are 2 operators available to choose from for flights to Watertown Airport.

How old do you have to be to fly to Watertown Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel to Watertown Airport.

What documentation or ID do you need to fly to Watertown Airport?

The necessary travel and health documents for your Watertown Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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Why use momondo?

Why should I use momondo to find a flight deal to Watertown?

It is quick and easy to find flights to Watertown on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Watertown that suits you.

Can I find flights to Watertown with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for flights to Watertown to just show those with flexible booking policies.

How can momondo help me find flights to Watertown?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight to Watertown.

I’m not ready to book a flight to Watertown right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Watertown, momondo offers a useful price alert feature which will track prices for flights to Watertown and alert you when they change.