Aviation Regulator publishes draft decision on Dublin Airport winter slot capacity

The Irish Aviation Authority (IAA) has published its draft decision on Dublin Airport’s Winter 2025 capacity, proposing coordination parameters which will be used in the airport slot allocation process. The Winter 2025 scheduling season runs from 26 October 2025 to 28 March 2026.

In light of the recent judgment of the High Court that, pending the determination of associated legal proceedings, the IAA is not to take account of certain planning conditions which limit the ‘combined capacity’ of Terminal 1 and Terminal 2 to 32 million annual passengers, we do not propose to implement any seat cap coordination parameter for Winter 2025.

The proposed coordination parameters will support increased competition by allowing for up to 41 additional daily slots to be allocated by the independent slot coordinator, but without degrading the current service quality. That assessment is driven by a number of factors, including enhanced infrastructure such as the new aircraft parking stands at Apron 5H- as well as the runway capacity of the parallel runway system and associated taxiways.

The draft decision and supporting material is available on the IAA website @ iaa.ie/slotallocation