Passenger numbers at Dublin Airport declined by more than 99% in April due to Covid-19 restrictions and by more than 98% in May.
The airport said it is still waiting final passenger data for June but it is likely that traffic will be down by 97% compared to the same month last year.
The airport saw an average of about 9,500 passengers a day last week compared to 112,000 passengers a day in 2019 - a decline of almost 92%.
Dublin Airport stayed open throughout the lockdown as an essential service for cargo and repatriation flights.
Since the country entered lockdown in the middle of March, 49 million kilogrammes of cargo has been handled at the airport.
This includes almost 6 million kilogrammes of personal protective equipment (PPE) and medical supplies.
Dublin Airport has also facilitated about 2,050 dedicated cargo flights during that period, including 335 flights bringing PPE/medical supplies to Ireland, 333 of which were from China.
Dublin Airport said it has put in place an extensive range of measures to enhance the safety of its passengers in light of Covid-19.
Only those travelling are allowed to enter the terminal buildings and it is strongly recommended that passengers wear a face mask throughout their journey through the airport whether they are arriving or departing.