A 100ml liquid restriction for cabin baggage is being scrapped at Knock Airport.
Minister of State Jack Chambers has said this is part of a €17 million investment in regional airports.
He will make the announcement during a visit to Shannon Airport later.
Th funding will contribute towards capital investment at Donegal, Knock and Kerry airports.
Minister Chambers told Newstalk Breakfast: "We're focused as well on safety and security.
"We're upgrading, for example, Knock Airport are getting what they call the CAP 3 security screening.
"[This] means that devices and liquids don't have to be taken out [of hand luggage] - which I know Shannon, Donegal and Kerry have benefitted from".
Dublin Airport has been testing the enhanced x-ray technology since late last year.
Minister Chambers said there are also several sustainability measures.
"We are also upgrading a lot of vehicles and operation equipment within airports so that they're more sustainable", he said.
"There's an energy efficiency project, for example, in Donegal which is to build a new roof with solar panels.
"So there's a dual focus here; ensuring that our airports are fit for purpose for the future and have a greater level of sustainability".
'Only one PSO route in Ireland'
Minister Chambers also defended subsidies on internal air travel.
"We only have one PSO (Public Service Obligation) route presently," he said.
"Ryanair provide the Kerry-Dublin route on a commercial basis, without any subsidy from the taxpayer.
"The Donegal-Dublin route is still provided; and as people know and will appreciate... when you're in west Donegal, it is important that you have that option of a flight to Dublin for onward connectivity.
"That is the only PSO route we have within Ireland.
"I know there were many more a number of years ago, but nearly every route operates on a commercial basis," he added.