Pierre Regional Airport (PIR) is located on the Missouri River, just 5 miles away from the water, and is serviced by United airlines, Denver Air and Mustang Aviation charter flights.&nbsp;
Another option is flying into&nbsp;Rapid City Regional Airport (RAP), which offers more major carriers and road-tripping the 171 miles east to Missouri River. Or fly into Sioux Falls Regional Airport (FSD), South Dakota's biggest and most passenger-traveled international airport, and road trip west about 222 miles, which will take you just over three hours to drive.