An Coimisiún Pleanála has granted Dublin Airport permission to increase the number of night-time flights it can operate, as well as an extension to the hours it can use its second runway.
The number of flights permitted has increased from an average of 65 a night, to 95, between the hours of 11PM and 7AM.
On the second runway meanwhile, known as the North Runway, flights can now operate up to midnight and from 6AM.
Flights were previously not allowed to take off or land on the second runway between 11PM and 7AM.
However, An Coimisiún Pleanála ruled a "Noise Quota Scheme" would apply to aircraft movement, meaning the type of aircraft used during night time hours would be limited, depending on the noise emitted.
In its decision, it said it applied a restriction of 35,672 night-time flights to "protect residential amenity."
CEO of DAA Kenny Jacobs has welcomed today's decision, saying, "overall this is a good decision for Ireland. North Runway is a critical enabler for the growth of Dublin Airport, which is needed to keep pace with population increases and economic opportunities.
"We invested hundreds of millions in a second runway to benefit Ireland but have been hamstrung in using it effectively since it opened. We welcome the clarity today's decision brings which removes uncertainty for Dublin Airport and the airlines, as well as having a positive impact on jobs and investment in Ireland."
He added, "however, we are disappointed with the night-time movements cap which is on top of a noise quota."
"We also reaffirm our clear commitment to engaging with the local community to mitigate the impact of airport operations and have already begun to implement the noise insulation grant scheme."
