Airplane chimes have long been part of commercial air travel, where a short two-tone signal is used to alert passengers and crew without interrupting the cabin with a spoken message. Because almost everyone recognises it from flying, the sound travelled naturally into online video, where creators use it as shorthand for travel, holidays, and airport scenes. Its short length and calm tone make it easy to drop into edits, and it remains popular because it instantly places a viewer inside an aircraft, even in a joke or a brief clip.