Why Do Planes Only Board From The Left Side?

Why do passengers always board from the left side of an airplane? It seems like a simple design choice—but the real answer goes back hundreds of years, long before aviation even existed. In this video, we uncover the surprising maritime history behind one of aviation’s most universal traditions. From the origins of port and starboard on ancient ships, to the way modern airports are designed around a centuries-old convention, we explore why the left side became the passenger side—and why changing it today would be almost impossible. What you'll learn in this video: Why airplanes almost always board from the left side The surprising connection between aviation and maritime history How the terms “port” and “starboard” originated Why the right side of an aircraft became the service side How airport infrastructure reinforces this convention Why a decision made by sailors still shapes every flight today #aviation #history #engineering #planes #airports #travel #aviationfacts #logistics #transportation #documentary