Burley Municipal Airport (IATA: BYI, ICAO: KBYI, FAA LID: BYI) is a city-owned public-use airport located one mile (2 km) northeast of the central business district of Burley, a city in Cassia County, Idaho, United States. The airport was rededicated as Burley J R Jack Simplot Airport in October 2002, honoring J. R.