People planning to travel overseas this weekend have been warned to be on time as almost 300,000 passengers are expected to pass through Dublin Airport.
Nearly 2,000 flights are due to arrive and depart the city over the bank holiday weekend.
Some 80 charter flights have been added to the normal schedule to accommodate the busy period.
The Dublin Airport Authority said people should know which terminal their flight is leaving from before they get to the airport.
"Passengers should plan to arrive in the terminal building at least 90 minutes before their flight departure time, irrespective of whether they are checking in on the web or at the airport," the authority added.
Travellers have also been reminded of security measures in place, including rules concerning liquids and sharp objects in hand luggage.
The airport is expecting 280,000 passengers from Friday to Monday and has arranged for customer care teams to be available across both terminals.E