Irish budget carrier Ryanair has turned in a full-year net profit of €867 million ($946 million), a rise of two-thirds.
The airline exceeded previous guidance and its performance followed a 12% rise in revenues to €5.6 billion.
Passenger numbers increased to 90.6 million during the year to 31 March 2015 while load factor rose by five points to 88%.
While the fuel-price decline is reflected in expenditure, unit costs excluding fuel stayed flat despite a push into primary airports, says the carrier.
"Our cost leadership over competitors has widened during the last year," it adds.
"This bodes well for our growth, especially as we move into airports and routes where our competitors are charging markedly higher fares."
Source: Cirium Dashboard