Fremont Municipal Airport (ICAO: KFFX, FAA LID: FFX, formerly 3FM) is a city-owned public-use airport located three nautical miles (6 km) southwest of the central business district of Fremont, a city in Newaygo County, Michigan, United States. The airport in uncontrolled, and is used for general aviation purposes. Additionally, skydiving and ultralight activity is conducted at the field.