The founder and chair of airline CityJet believes people will be able to travel abroad this summer.
It comes after the EU announced plans to create a vaccine passport, to help restore freedom of movement within the bloc for citizens.
The Irish Government's advice remains that no non-essential travel can take place.
The digital certificate will show if a person has been vaccinated against Covid-19, received a negative test result or recovered from the virus.
Pat Byrne of Cityjet claims travel is now looking more likely.
Mr Byrne said: “I think there's huge pressure building out there, pent-up pressure from people who have a demand, want to travel, need to travel.”
He added: “I think that is eventually going to hold sway on political leadership, yes I am hopeful that there will be travel this summer, maybe from mid-summer on, but I think that we are going to see travel this summer.”