The Country Manager for Emirates airline in Ireland has said they are seeing high booking levels and he expects that they will go "from a trickle of demand to a tsunami".
Speaking on RTÉ's News at One, Enda Corneille said they are already seeing very strong advance bookings for the rest of the year, especially at Christmas.
"We're going to get back quicker than maybe we would have thought," he said.
Mr Corneille said while the digital cert doesn't apply to Emirates, which flies from Dublin to Dubai, "anything that gets people flying, anything that gets people to the airport and comfortable with their experience will be good for the airlines".
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He said he expects the travel experience will develop through word of mouth and as people compare their experiences.
Mr Corneille said the delay in opening up countries including Australia and New Zealand, will hold them back in bringing back extra capacity.
He said all airlines are entering the riskiest period as they come out this pandemic.
He said Emirates will be taking a "gradual" approach and described today's opening up as a necessary first step in generating consumer confidence.
Meanwhile, Eddie Wilson, the chief executive of Ryanair has said that airline bookings are "very strong".
Mr Wilson said once travellers adjust to the use of the Covid digital certificate regime, he believes international travel will get back to "normal".
"Once people know exactly what the rules are, the digital cert is working exceptionally well," he said speaking on the News at One.
"People are crossing EU borders in a very efficient manner," he said.
Mr Wilson said that the new way to travel is "relatively straightforward", adding that "there is no great mystery to this".
Five million people travelled with Ryanair across Europe in June, according to the Ryanair chief.
He said that while seat occupancy is now in the mid 70s and is expected to grow to 95%, the real concern is about the winter season.
He called on the Minister for Transport Eamon Ryan to implement the Aviation Taskforce Report and introduce incentives to attract and retain airline traffic for the off-season.
Mr Wilson said jobs and tourism depend on inbound traffic in the winter.
"If we don't restore traffic to where it was before, people are not going to get back into employment, particularly in the tourism industry," he said.
Mr Wilson said that there are much more attractive airports in Europe than Irish airports for airlines to choose and with less airlines travelling into Europe he said the Irish Government needs to "grab them" and keep connections into Ireland going.