In Terminal 1, all liquids must be in containers of 100ml or less, placed in a clear, 1-liter bag (20cm x 20cm) and clearly visible in the security tray. Each passenger is allowed only one 1-liter bag.

Additionally, large electronic devices, such as laptops and tablets, must be removed from bags and placed separately in the security tray.

For those traveling through Terminal 2, the rules are slightly different. While liquids must still be in 100ml containers and placed in clear bags visible in the security tray, there is no restriction on the number of bags or containers a passenger can carry. Furthermore, all electronic items can remain inside hand luggage.

Dublin Airport’s managing director, Gary McLean, explained the changes, noting that they are part of an ongoing rollout of new C3 scanners, which affects all airports in Ireland and Europe using this technology.

The rollout is at different stages in the two terminals, leading to different procedures.

“In Terminal 2, all security lanes are equipped with C3 scanners, ensuring all passengers use this new technology,” McLean said. “In Terminal 1, however, the older building means the rollout is taking longer, so passengers might encounter either the new C3 scanners or older equipment.”

The full deployment of C3 scanners across both terminals is expected to be completed by October 2025. McLean emphasized the importance of passengers preparing in advance to avoid delays and recommended visiting the Dublin Airport website for further details on security procedures.