# Watertown Regional Airport (ATY / KATY)

**Watertown Regional Airport** (IATA: ATY, ICAO: KATY) is a medium airport in Watertown, South Dakota, United States. It opened in Dec 1937. It has 2 runways; the longest is 6,898 ft (2,103 m). In 2025 it handled 27 thousand passengers.

Web page: https://dromopedia.com/airports/katy

## At a glance

- IATA / ICAO: ATY / KATY
- FAA: ATY
- Type: Medium airport
- Serves: Watertown, South Dakota, United States
- Opened: Dec 1937
- Elevation: 1,749 ft / 533 m
- Coordinates: 44.9140, -97.1547
- Runways: 2
- Longest runway: 6,898 ft / 2,103 m
- Instrument procedures: 5 approaches
- Passengers: 27,044 (2025)
- Time zone: UTC-6/-5 · America/Chicago
- Wikipedia: https://en.wikipedia.org/wiki/Watertown_Regional_Airport (9 languages)
- Wikidata: https://www.wikidata.org/wiki/Q7974510
- Weather station: KATY
- Ident: KATY

## Timeline

- Dec 1937: Watertown Regional Airport opens.

## Runways

| Ident | Length | Width | Surface | True headings | Lighted |
| --- | --- | --- | --- | --- | --- |
| 12/30 | 6,898 ft / 2,103 m | 100 ft / 31 m | Concrete | 125° / 305° | yes |
| 17/35 | 6,893 ft / 2,101 m | 100 ft / 31 m | Concrete | 180° / 360° | yes |

- FAA airport diagram: https://aeronav.faa.gov/d-tpp/2611/00444AD.PDF

## Passengers per year

| Year | Passengers | Source |
| --- | --- | --- |
| 2017 | 22,049 | BTS T-100 Segment |
| 2020 | 14,381 | BTS T-100 Segment |
| 2021 | 36,995 | BTS T-100 Segment |
| 2022 | 30,918 | BTS T-100 Segment |
| 2023 | 31,081 | BTS T-100 Segment |
| 2024 | 28,538 | BTS T-100 Segment |
| 2025 | 27,044 | BTS T-100 Segment |

## Routes

2 destinations in 1 country. From the airport's Wikipedia article.

### Year-round (2)

- [MSP](https://dromopedia.com/airports/kmsp.md) Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field · United States · 193 mi / 310 km · Delta Connection
- [DEN](https://dromopedia.com/airports/kden.md) Denver International Airport · United States · 518 mi / 834 km · United Express

## Airlines

The figure is how many destinations each airline flies from ATY, as the routes above have them. Hubs from Wikidata.

### Passenger (2)

- [Delta Connection](https://dromopedia.com/airlines/delta-connection) · 1
- UA [United Express](https://dromopedia.com/airlines/united-express) · 1

## Rankings

Ranked among 48,075 open airports; = marks a shared place.

| Measure | Value | World | Region | Country |
| --- | --- | --- | --- | --- |
| Passengers | 27K (2025) | #2,329 of 3,974 | #540 in North America | #368 in US |
| Longest runway | 6,898 ft / 2,103 m | =3,579 of 29,858 | =880 in North America | =669 in US |
| Elevation | 1,749 ft / 533 m | #10,273 of 43,403 | #4,545 in North America | #3,427 in US |
| Age | Opened 1937 | =703 of 15,079 | =141 in North America | =123 in US |
| Runways | 2 | =715 of 29,978 | =435 in North America | =391 in US |

## Radio frequencies

| Type | Description | MHz |
| --- | --- | --- |
| ASOS | ASOS | 126.625 |
| CNTR | MINNEAPOLIS CNTR | 128.500 |
| RDO | HURON RDO | 122.500 |
| UNIC | CTAF/UNICOM | 123.050 |

## Nearby airports

- [US-3415](https://dromopedia.com/airports/us-3415.md) South Shore Airport · 17 mi / 27 km
- [5H3](https://dromopedia.com/airports/5h3.md) Clear Lake Municipal Airport · 25 mi / 40 km
- [8D7](https://dromopedia.com/airports/k8d7.md) Clark County Airport · 27 mi / 44 km
- [17SD](https://dromopedia.com/airports/17sd.md) Stone's Conservation Airport · 30 mi / 48 km
- [1SD8](https://dromopedia.com/airports/1sd8.md) Tribitt Airport · 31 mi / 50 km
- [SD19](https://dromopedia.com/airports/sd19.md) Andersen Farms Airport · 31 mi / 50 km

## Sources

- [BTS T-100 Segment](https://www.transtats.bts.gov/Tables.asp?QO_VQ=EEE&QO_anzr=Nv4%20Pn44vr45): US traffic: Bureau of Transportation Statistics, T-100 Segment (Public Domain (US Government))
- [FAA NASR](https://www.faa.gov/air_traffic/flight_info/aeronav/aero_data/NASR_Subscription/): US airport data: FAA National Airspace System Resources (Public Domain (US Government))
- [NOAA Aviation Weather Center](https://aviationweather.gov/data/api/): Weather data: NOAA Aviation Weather Center (Public Domain (US Government))
- [OurAirports](https://ourairports.com/data/): Airport data from OurAirports (Public Domain)
- [Wikidata](https://www.wikidata.org): Structured data from Wikidata (CC0 1.0)
- [Wikipedia: “Watertown Regional Airport”](https://en.wikipedia.org/w/index.php?title=Watertown_Regional_Airport&oldid=1363087158), revision of 7 Jul 2026 (CC BY-SA 4.0)
- [timezone-boundary-builder](https://github.com/evansiroky/timezone-boundary-builder): Time zone boundaries © OpenStreetMap contributors, timezone-boundary-builder (ODbL 1.0)
- Every figure with its source: https://dromopedia.com/airports/katy/data