Watertown International Airport

Watertown International Airport (KART) is a medium airport in Watertown, NY. Pilots and dispatchers reference it by ICAO code KART or IATA code ART. It sits in North America.

Watertown International 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 7,001 ft (2,134 m), a heavy-class field. Representative aircraft that operate comfortably here include the Gulfstream G550, Falcon 7X, and Bombardier Global 5500. In practice this most heavy and super-midsize jets operate here without restriction.

Watertown International Airport sits near sea level at 325 ft.

Local operations run on America/New_York. 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 KART 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 KART 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 International Airport is in the Town of Hounsfield in Jefferson County, New York, United States, 6 mi west of Watertown. The airport is used for general aviation, but has scheduled passenger service subsidized by the Essential Air Service program. The airport has no scheduled international passenger flights, but is available as an international port of entry for private aircraft on two hours' advance notice from pilots.