Joseph State Airport (ICAO: KJSY, FAA LID: JSY, formerly 4S3) is a public use airport located one nautical mile (1.85 km) west of the central business district of Joseph, a city in Wallowa County, Oregon, United States.

The nearest commercial flights are at the Eastern Oregon Regional Airport in Pendleton.

Joseph State Airport covers an area of 103 acres (42 ha) at an elevation of 4,126 feet (1,258 m) above mean sea level.

It has one runway designated 15/33 with an asphalt surface measuring 5,202 by 60 feet (1,586 x 18 m).

[3] For the 12-month period ending August 28, 2018, the airport had 3,850 aircraft operations, an average of 74 per week: 94% general aviation and 6% air taxi.