Come see performers like the U.S. Air Force Thunderbirds at the 2026 Power on the Prairie Sioux Falls Air and Space Expo on July 18-19. The Sioux Falls Airshow is a free event with entertainment for the whole family. Show hours are 11 a.m.-3:30 p.m. Gates are open 8:30 a.m.-5 p.m. Shuttle buses from