People may be able to holiday in Spain or Portugal in the next few months.
It’s after European politicians approved plans for a so-called "Covid passport".
The cert will show whether someone's been vaccinated, tested negative or recently recovered from the virus.
Editor of Air and Travel Magazine, Eoghan Corry, expects the sector to pick up this Autumn.
"September and October will be the time for 'real travel'.
But he said the plans depend on whether or not Ireland and the EU can avoid the mistakes of the last year.
"The message from brussels is that the green cert is the way to go," he said.
