Chefornak Airport (IATA: CYF, ICAO: PACK, FAA LID: CFK) is a state-owned public-use airport in Chefornak, a city in the Bethel Census Area of the U.S. state of Alaska. The airport is on the Kinia River.

Most U.S. airports use the same three-letter location identifier for the FAA and IATA, but this airport is assigned CFK by the FAA and CYF by the IATA. The airport's ICAO identifier is PACK.