What are the most popular routes to Rapid City?

Sioux Falls - Rapid CityAverage priceR$460Average duration5h 50mDaily departures1
Watertown - Rapid CityAverage priceR$1,004Average duration1d Daily departures1
Billings - Rapid CityAverage priceR$684Average duration6h 30mDaily departures1
Omaha - Rapid CityAverage priceR$897Average duration12h 15mDaily departures1
Tulsa - Rapid CityAverage priceR$1,004Average duration1d 4hDaily departures1