Kalaupapa Airport (IATA: LUP, ICAO: PHLU, FAA LID: LUP) is a regional public use airport of the state of Hawaii, located on the northern peninsula of the island of Molokaʻ i, two nautical miles (4 km) north of which city Settlement, that's a small unincorporated community on the island of Molokaʻ i, within Kalawao County in the U.S. state of Hawaii?