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Dublin Airport is ten kilometres north of the city and is unusually well connected for a city of this size — the legacy of Ireland’s aviation industry, a large diaspora and Aer Lingus’s transatlantic network.
Before you book
There is no rail link to the city. Everything goes by road: the Airlink bus, the ordinary 16 and 41 buses, Aircoach, or a taxi. Budget 30 minutes off-peak and up to an hour at rush hour. See airport to the city.
Two terminals, five minutes’ walk apart. Terminal 1 is Ryanair, Aer Lingus short-haul and most European carriers; Terminal 2 is long-haul.
US preclearance
Dublin is one of a handful of airports outside the Americas with US Customs and Border Protection preclearance. Flying to the United States, you clear US immigration and customs in Dublin and land as a domestic arrival — no queue at the far end and straightforward onward domestic connections.
The consequence: allow substantially more time than for a normal international departure. Around three hours is the standard advice and it is not padding.
When fares are lowest
January, February and November are the cheapest months. Summer, St Patrick’s week and rugby international weekends are the dearest — the last of those affects fares as well as hotels.
Mid-week departures are consistently cheaper than Friday and Sunday.
Entry
Ireland is in the EU but not in Schengen. A Schengen visa does not admit you and an Irish stamp does not consume Schengen days — check your nationality’s requirement for Ireland separately.
Ireland and the UK share the Common Travel Area, so there are no routine passport checks between them, but airlines require photographic ID and most insist on a passport.