Read on for the first section of the UK chapter - you can read the full text here (registration required). . Also, you need to bring weight into the equation if you plan on travelling - not just for baggage weight, but also because most countries now have very harsh restrictions on anything over 250g (the. 1. YOU. To operate a drone that is under 250g you only need an Operator ID, if the drone is over this weight you will need a Flyer ID. .