Shell Lake Municipal Airport is a city owned public use airport located one nautical mile (2 km) southeast of the central business district of Shell Lake, a city in Washburn County, Wisconsin, United States. It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2025–2029, in which it is categorized as a basic general aviation facility. Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned SSQ by the FAA but has no designation from the IATA (which assigned SSQ to La Sarre Airport in La Sarre, Quebec, Canada). The airport's ICAO identifier is KSSQ.

Facilities and aircraft

Shell Lake Municipal Airport covers an area of 132 acres (53 ha) at an elevation of 1,233 feet (376 m) above mean sea level. It has one runway designated 14/32 with an asphalt surface measuring 3,711 by 75 feet (1,131 x 23 m), with approved GPS approaches. For the 12-month period ending September 23, 2021, the airport had 12,600 aircraft operations, an average of 35 per day: 95% general aviation, 4% air taxi and 1% military. In July 2024, there were 14 aircraft based at this airport: all 14 single-engine.