The Irish Aviation Authority (IAA) has reported a 2.8% increase in revenues for 2018.
Its annual report shows its turnover reached €198.9m, with a profit after tax of €31.3m - up from €26.3m in 2017.
The IAA receives no capital funding from the State, with revenues generated from fees and charges on the aviation industry.
Last year was also its busiest ever year - overseeing 1.15 million flights.
Ireland's air traffic grew by over 1.4% compared to 2017.
The IAA also announced the payment of a €19.5m dividend to the State, made up of an ordinary dividend of €7.5m and a special dividend of €12m.
While operating profit was down 5.9% to €31.5m from €33.5m in 2017.
Peter Kearney, chief executive of the IAA, said: "This is a very satisfactory financial performance in 2018, a year in which the IAA safely and efficiently managed a record number of flights in Irish airspace.
"Despite the uncertainty due to Brexit, these results demonstrate the benefits of our continued investment in technology and our people, and will further cement our position as a leading aviation regulator and service provider."
The report also showed Mr Kearney is currently paid a salary of €225,000 per year.
The group employs some 685 staff, which is up from the 666 people it employed in 2017.
Main image: The new Air Traffic Control tower at Dublin Airport | Image: IAA