The number of passengers using Dublin Airport dipped by 1% in November, the first monthly drop since March 2014.
More than 2.2 million passengers used Dublin Airport last month, with numbers dropping on all route sectors except Europe, which recorded a 2% increase to almost 1.1 million.
Almost 833,000 passengers travelled to and from UK destinations in November, down 2% compared to 2018.
Transatlantic traffic to and from North America last month declined by 4% with almost 263,000 passengers travelling on this route sector, while traffic to and from other international destinations, including the Middle East and Africa, decreased by 11%.
Meanwhile, passenger numbers on domestic routes declined by 25% with almost 7,300 travelling on domestic flights last month.
Dublin Airport said the fall in passenger numbers last month was due to airlines withdrawing services or reducing capacity on their existing route network to and from Dublin during the winter.
So far this year, more than 30.6 million passengers have travelled through Dublin Airport, a 5% increase compared to the same time last year.