Ryanair on Monday lowered its full-year profit guidance, as it said higher fuel and staffing costs, and a decision by online travel agents to stop listing its flights, had hit profits in the final three months of 2023.The Irish airline also told investors that delays of Boeing aircraft deliveries are set to impact its growth over the coming year. The low-cost airline RYA, -0.88% RYAAY, +0.09% said the decision by “pirate” travel agents — including Kiwi, and Booking Holdings BKNG, +0.47% owned websites Kayak ...