Watertown Regional Airport

Watertown Regional Airport (KATY) is a medium airport in Watertown, SD. Pilots and dispatchers reference it by ICAO code KATY or IATA code ATY. It sits in North America.

Watertown Regional Airport is a regional commercial airport that doubles as a busy private-aviation base. Operators benefit from full instrument approaches and an FBO infrastructure scaled for regular jet traffic, often without the congestion of the nearest major hub.

The longest runway measures 6,898 ft (2,103 m), a midsize and super-midsize-class field. Representative aircraft that operate comfortably here include the Citation Longitude, Challenger 350, and Gulfstream G280. In practice this comfortable for most midsize and super-mid charter equipment.

Watertown Regional Airport lies at 1,749 ft elevation.

Local operations run on America/Chicago. Scheduled airline service is light enough that it rarely interferes with charter movements, though planners should still expect to coordinate with the handling agent for international turnarounds.

SkyAccess inventory for KATY updates continuously as operators publish new empty legs and one-way repositioning trips. Pricing on each leg is available with a free account, and an inventory alert will email you the moment a leg appears on the route you care about.

Regional fields like KATY are a meaningful share of US private aviation — closer to the trip's actual origin or destination than the nearest major hub, with shorter ramp-to-cabin times that are the main reason owners and brokers prefer them.

Watertown Regional Airport, formerly Watertown Municipal Airport, is two miles northwest of Watertown in Codington County, South Dakota, United States.