New security measures come into force today on all US-bound flights, including stricter passenger screening before takeoff.
However, passengers travelling to the United States from Dublin and Shannon may not notice any difference.
The enhanced measures are being introduced to comply with US government requirements designed to avoid an in-cabin ban on laptops.
Airlines say the new measures could also include short security interviews with passengers.
They will affect 325,000 airline passengers on about 2,000 commercial flights arriving daily in the US, on 180 airlines from 280 airports in 105 countries.
The new rules come at the end of a 120-day window for new US safety regulations to be implemented following the lifting of the laptop ban imposed on some Mideast airlines.
Those restrictions were lifted in July, but the Trump administration said it could reimpose measures on a case-by-case basis if airlines and airports did not boost security.
Aer Lingus has said that as both Dublin and Shannon airports already have US preclearance in place, many of the measures being implemented are already in place here…
