Passengers in Dublin, Cork and Shannon Airports face flight disruption on 30 March, following a decision by SIPTU members to stage an eight hour work stoppage.
The strike will coincide with the day of action called by the Irish Congress of Trade Unions.
SIPTU represents workers in the airport’s fire, police and security services.
The work stoppage will take place from 4am until 12 midday.
Meanwhile, the Labour leader has called on the Taoiseach to contact trade union leaders to ask them to call off the planned strike action.
Tens of thousands of teachers, nurses and other public sector workers have voted to join in the day of protest, organised by the Irish Congress of Trade Unions.
Speaking on RTÉ Radio, Mr Gilmore said the planned strike should be postponed or called off.
Mr Gilmore said he did not believe a national strike would be good for the country.
The country's largest craft union, the Technical Engineering and Electrical Union, has said it will serve strike notice on the Government and the other main employer bodies tomorrow.