Dublin Airport Irish: Aerfort Bhaile Átha Cliath is an international airport serving Dublin, Ireland. It is operated by DAA. The airport is located in Collinstown, 7 km (4.3 mi) north of Dublin, and 3 km (1.9 mi) south of the town of Swords. In 2019, 32.9 million passengers passed through the airport, making it the airport's busiest year on record. It is the 13th busiest airport in Europe, and is the busiest of Ireland's airports by total passenger traffic; it also has the largest traffic levels on the island of Ireland, followed by Belfast International Airport.

An international airport is an airport with customs and border control facilities enabling passengers to travel between countries around the world. International airports are usually larger than domestic airports, and feature longer runways and have facilities to accommodate heavier aircraft such as the Boeing 747 and the Airbus A380 commonly used for international and intercontinental travel. International airports often host domestic flights, which helps feed both passengers and cargo into international ones.