DAA which runs Dublin and Cork airports is seeking hundreds of voluntary redundancies.
The details of a voluntary redundancy scheme will be outlined to staff next week.
Dalton Philips, DAA chief executive, told staff that the company, which runs both airports, needs to reduce staff numbers to handle a dramatic fall in air traffic. The two airports had expected to handle 35 million passengers this year, though this is now forecast to be as low as 21 million following the effective shutdown of air travel for three months due to the pandemic.
Cork Airport is now expected to handle around 900,000 this year.
While Mr Philips didn't identify specific cuts, he told staff the last time the DAA handled 21m passengers, they had 750 to 1,000 fewer staff. DAA employs in the region of 3,500 staff at present.