W. K. Kellogg Airport (IATA: BTL, ICAO: KBTL, FAA LID: BTL) is a city owned, public use airport located three nautical miles (6 km) west of the central business district of Battle Creek, a city in Calhoun County, Michigan, United States. The airport is accessible by road from Helmer Road, and is located near I-94. It is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a general aviation facility. It is also known as W. K.