Dublin Airport, , is an international airport serving Dublin, the capital city of Ireland. It is operated by DAA (formerly Dublin Airport Authority). The airport is located 5.4 nmi north of Dublin in Collinstown, Fingal. In 2016, 27.9 million passengers passed through the airport, making it the airport's busiest year on record. It is the 16th busiest airport in Europe, and is also the busiest of the state's airports by total passenger traffic.