Almost a quarter of them were involved in security.
248 security screening staff from Dublin and Cork airports went through voluntary redundancy in the past 18 months.
The details have been obtained by the Business Post.
Roughly 1,000 airport workers have accepted voluntary redundancy since September 2020.
And almost a quarter of them were involved in security.
It comes as the company seeks to hire 300 staff to address major backlogs in recent weeks.
Yesterday, images and videos circulated on social media of long queues outside terminals, as people arrived early for flights.
People are now being asked to arrive 3.5 hours before flights.
A spokesperson for Dublin Airport Authority said yesterday that long queues are likely to last into summer.
While the DAA says it expects up to 80,000 to travel through the airport this weekend.