From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Planes (プロペラ機, Puroperaki) are a type of aircraft that Earthlings use as a means of transportation.
Planes were essentially a far quicker way to travel great distances and move a much greater distance than groundcraft.
Planes in the Dragon Ball series were commonly seen, most notably being Capsule Corporation models. Pilaf also used a large plane for transportation. Organizations such as the Red Ribbon Army and Earth's Military used fighter planes and jets for combat.
 Video games
Planes appeared in Dragon Ball 3: Gokū Den.