ISN Airport Overview
Sloulin Field International Airport ISN is located two miles north of the central business district of Williston, in Williams County, North Dakota. Even though it is mostly a gernal aviation airport, scheduled passenger service is provided by Great Lakes Aviation to Chadron, Denver & Dickinson. Although ISN airport doesn’t have any commercial international flights, it has the international moniker because it has a U.S. customs service to handle private flights from Canada.