McKinley National Park Airport (IATA: MCL, ICAO: PAIN, FAA LID: INR, formerly 5MK) is a public-use airport located two nautical miles (3.7 km) northeast of Denali Park, in Denali Borough, Alaska, United States. It is owned by the U.S. National Park Service and is located at the Denali National Park and Preserve (previously Mount McKinley National Park). Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned INR by the FAA and MCL by the IATA. The airport's ICAO identifier is PAIN.