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Ryanair is an Irish ultra low-cost airline headquartered in Swords, County Dublin, Ireland. It is the largest airline in Europe based on annual passengers, fleet size, number of flights, the largest airline worldwide based on number of international passengers carried, and the second-largest airline worldwide based on market capitalization after Delta Air Lines. It is also one of the most profitable airlines worldwide. In 2025, the company sold 208 million airline tickets, with average total revenue of €70 per ticket sold, compared to average total costs of €62 per ticket sold.