>>7546064I think the novelization also mentions them flying at one point, but could be misremembering. The scene where they rescue the Toa plays out differently, though. In the books and comics, the Rahaga just parkour all over the and swing on spider webs instead of flying.
The only legit flight capability Rhotuka-launching people have is shooting a spinner in the air and grabbing onto it while it flies, which looks retarded in the movie. But the Rahaga don't have copter packs. That was a movie-only invention to make their scenes easier to animate without slowing down the film's pace.