Gardiner Montana is the North Entrance to Yellowstone National Park. This entrance is open year round and during winter is the only entrance open to over road vehicles. The road is plowed to the Northeast Entrance. You drive to Gardiner Montana via U.S Route 89 from Livingston Montana (56 miles). Yellowstone National Park Headquarters is 5 miles after the entrance. The closest airport to the North Entrance is Bozeman/Belgrade, Montana the Gallatin Field Airport (BOZ) 56 miles from Gardiner. This is also the largest airport near Yellowstone.