Yes, Ryanair is legally required to pay compensation for late flights under EU Regulation 261/2004 (and the mirrored UK261 for flights departing the UK). If your flight arrives at its destination more than three hours late, you may be entitled to compensation ranging from €250 to €600, depending on the distance of the flight. However, this only applies if the delay was within the airline's control, such as a technical fault or a crew scheduling issue. If the delay was caused by "extraordinary circumstances" like severe weather, air traffic control strikes, or bird strikes, Ryanair is not required to pay monetary compensation. Regardless of the cause, if your flight is delayed over two hours, the airline must provide "Duty of Care," which includes vouchers for food and drink, and if necessary, overnight hotel accommodation and transport. Ryanair has a dedicated online claim portal where passengers can submit their details. It is important to note that they often initially reject claims citing external factors, so travelers should be persistent or use a reputable flight-claim service if they believe they are rightfully owed money.