We advise passengers to arrive at their terminal 3 hours before long-haul flights.
If you are checking bags or travelling in a group you should allow more time. Always consult your airline for check-in in desk and bag drop opening hours.
If you are flying soon, please be aware that it might be very busy at peak periods, so allow yourself plenty of time to check-in, go through Security screening and allow time to go through US Preclearance before your USA bound flight. USA flights depart from Terminal 2. At the moment, peak times at Security occur in Terminal 2 at 05.00 to 12.00 for morning and early afternoon flights.
Once you have cleared Dublin Airport security, the US Preclearance screens will direct you when to go to US Preclearance. Passengers should not present to US Preclearance before their flight opens. Please see example below.