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Sloulin Field (ISN) Airport

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ISN Airport & Flight Info


  • ISN Airport Overview
    Sloulin Field International (ISN) Airport serves the city of Williston and the surrounding Williams County in northwestern North Dakota. Scheduled passenger service is provided by Great Lakes Aviation and Big Sky Airlines. Great Lakes Aviation offers daily, nonstop flights to Denver and Big Sky Airlines offers daily, except for Saturday, nonstop flights to Bismarck, ND. 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.


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