The NTA has faced sharp criticism after setting up the state's first 24-hour public bus route in Cork.
Dublin North West TD Noel Rock said the NTA needed to get its priorities straight.
"We have flights coming into and out of Dublin Airport 18 hours a day so workers and passengers in their thousands do need to get to Dublin Airport 24 hours a day," he said.
"Incredibly, the NTA have prioritised the Ballincollig to Carrigaline service in Cork as the first 24-hour service in the state instead of a 24-hour service being delivered from Dublin city centre to the airport as long promised by the NTA."
The NTA has now said it's "actively considering" an all-night airport route.
The capital has been without late buses on weeknights since 2008 when Nitelink services were axed as an austerity measure.
Plans to trial 24-hour routes in Dublin were announced in 2016 and again last year -- but so far, none have taken place.
Meanwhile another nine Dublin Bus routes will be transferred to private operator Go-Ahead tomorrow.
Suburban routes all over the city are switching over.
On the southside, the 17, 161 and 114 buses are changing.
Westside, the 236, 238, 239, and 270 will be taken over.
And on the northside, Go-Ahead are taking charge of the 104 and the 220.
