From AI:Yes, overbooking flights is legal and allowed in the EU. However, it is strictly regulated under EU Regulation EC 261/2004. If you are denied boarding due to overbooking, the airline must offer compensation, assistance, and a choice between rerouting or a refund.Here are the key details regarding overbooking in the EU:Compensation Amount: If you are involuntarily denied boarding, you are entitled to compensation based on distance:€250 for flights up to 1,500 km.€400 for all intra-EU flights over 1,500 km, and for other flights between 1,500 km and 3,500 km.€600 for all other flights.