The daa is rolling out several new measures as air travel resumes.
Travellers in Dublin and Cork Airports will be asked to wear face masks from next Tuesday, while anyone not actually travelling should not enter the terminal buildings.
Generally at this time of year, the two airports would see around 113,000 passengers a day between them.
But there are currently just 2,300 passengers using the airports - a decrease of around 98%.
Chief communications officer with the daa, Paul O’Kane, told Newstalk Breakfast they are preparing for a surge.
"We're working now to get organised and get planned for when passenger numbers will ramp up, cause they will ramp up in the future.
"We're strongly recommending that face masks or face coverings are worn by passengers in all buildings, we also have a strong recommendation for our staff to wear face masks - those'll be mandatory in some areas.
"We're asking passengers who are not travelling not to enter the terminal buildings, and that's to help us enforce social distancing.
"We also have a really enhanced cleaning regime, we have social distancing signage right up throughout the terminals."
"So if you look between the two airports, we have 10,500 pieces of signage to remind people of the rules around social distancing, to remind them of hand hygene and other rules in relation to COVID-19."
He said it is not possible to project where passenger numbers will be in a month's time.
But he added: "Our expectation for the entire year is that we may have about nine million passengers.
"And if you take last year, we had 35.5 million passengers between Dublin and Cork.
"So you're looking over the year at a very, very reduced number of passengers".
Several airlines are to resume routes from July 1st, including Ryanair.