More than 7.4 million passengers passed through the five main Irish airports in the first quarter of this year, an increase of 7.1% over the same time last year.
New figures from the Central Statistics Office show that passenger numbers increased in Cork, Dublin, Kerry and Knock, while passenger numbers decreased in Shannon.
The CSO noted that Dublin airport accounted for 87.2% of all air passengers handled in the first quarter of 2019.
Today's figures show that almost 58,000 flights were handled by the five airports in the first quarter of 2019.
Dublin accounted for 84.9% of all flights (49,167) while Cork handled 7.5% of all flights (4,354).
London-Heathrow, London-Gatwick and Amsterdam-Schiphol were the most popular routes for passengers travelling through Dublin airport in the first three months of the year.
For Cork airport, the top three routes were London-Heathrow, London-Stansted and Amsterdam-Schiphol.
Meanwhile, the busiest route for Shannon was London-Heathrow, the top route for Knock was London-Stansted and the top route for Kerry was London-Luton.
The CSO said the two most popular countries of origin/destination were the UK and Spain.
Outside of Europe, the US was the most popular country of origin/destination in the first quarter of 2019.