A Memorable Mandan Stay Modern hotel off I-94, near BIS airport Settle in with free breakfast, WiFi, and parking along with well-appointed guest rooms and a gym at Days Inn by Wyndham Mandan Bismarck Area. Off I-94, 11 miles from Bismarck Airport (BIS), our non-smoking hotel provides easy access to dining, shopping, and attractions such as Kist Livestock Auction, the North Dakota State Railroad Museum, and the North Dakota Heritage Center & State Museum. Splash around Raging Rivers Waterpark, tour the Custer House at Fort Abraham Lincoln State Park, or attend the fun-filled Mandan Rodeo Days at Dacotah Centennial Park.