Del Bonita / Whetstone International Airport

Whetstone International Airport

Frank Whetstone International Airport or Del Bonita/Whetstone International Airport is a public use airport at the Canada–US border, in Port of Del Bonita, Glacier County, Montana, 2 nautical miles south of Del Bonita, Cardston County, Alberta. The airport is owned by the U.S. state of Montana and is operated by the Montana Department of Transportation Aeronautics Division. It is located 31 miles (50 km) northwest of the city of Cut Bank, Montana.