The Sky Pop has finally arrived in Super Mario Maker from the ol' Game Boy game Classic: Super Mario Land. This costume looks like the sky pop, sounds like the Sky Pop, it just doesn't do one particular thing. Fly. No offense, but to my knowledge planes do one thing above all else. FLY! Otherwise, the trailer for the costume from Nintendo of Japan shows that the Sky Pop costume is quite like the original Sky Pop.
Another thing, This costume is given upon beating the new Event Course made by Super Mario fans at Southwestern Airlines. This course is called Southwest Air Adventure.