Airports 501 to 550
White Bear Lake Seaplane Base
White Bear Lake, Minnesota, United States — 258 km (139 nm) SSE
Hexum Flight Park Ultralightport
Star Prairie, Wisconsin, United States — 259 km (139 nm) SSE
Morris Municipal Airport Charlie Schmidt Field
Stephen Municipal Airport
Grand Marais/Cook County Seaplane Base
Grand Marais, Minnesota, United States — 260 km (140 nm) ENE
Grand Marais Cook County Airport
Grand Marais, Minnesota, United States — 261 km (140 nm) ENE
Rice Lake Municipal Airport
Grand Forks International Airport
Grand Forks, North Dakota, United States — 262 km (141 nm) WNW
Kollar's Shoreview Marine Seaplane Base
New Richmond Regional Airport
New Richmond, Wisconsin, United States — 263 km (142 nm) SSE