The Physics of Why Bigger Drones Can Fly Longer

You can get a drone in a wide range of sizes. Some of them fit in your palm (like the Syma X20) while others are quite large. But have you noticed anything about the flying time? Many of the super small drones have flight times that are less than five minutes. The larger drones (like the DJI Phantom 4) have a maximum flight time of closer to a half hour.