According to Trip.com's data, the lowest price is around $388. It is the home of the Arizona Diamondbacks, the city's Major League Baseball (MLB) franchise. Note: for airline-specific flight schedules, please scroll further down. The best way to get from Rapid City to Phoenix is to fly which takes 3h 22m and costs $360-$420. A PURCHASE OR PAYMENT OF ANY KIND WILL NOT INCREASE YOUR CHANCES OF WINNING. Rome2rio also offers online bookings for selected operators, making reservations easy and straightforward. It takes approximately 20h 9m to drive from Rapid City to Phoenix.