Vaccinated people will begin to receive digital Covid certificates for travel in the European Union from Monday.
However, would-be holidaymakers who have not been vaccinated will have to pay to get a private PCR test if they wish to go abroad.
Up to 170,000 people who have recovered from Covid-19 in the last six months will also be expected to contact a special call centre to get their certificate.
The Cabinet was updated on the plans for international travel yesterday amid continued concern over the impact of the Delta variant.
Taoiseach Micheál Martin briefed colleagues on the current pandemic picture, saying case numbers were increasing but the number of hospitalisations and intensive care admissions remained stable.