Border Management Unit at Dublin Airport
All passengers are required to pass through customs and immigration controls. Immigration and border controls at Dublin Airport are fully maintained by the Border Management Unit (BMU), which is under the directorship of the Irish Naturalisation and Immigration Service (INIS) of the Department of Justice and Equality. Useful info on immigration is available here. If your query relates to immigration control at Dublin Airport only, you should contact the BMU directly by email BMU@Justice.ie.
Immigration at Dublin Airport
EU arrivals
If your journey was entirely within the EU, use the blue channel after picking up your luggage. Customs officers will monitor this area and may operate checks. If you've something to declare to Customs, head to the red point.
Non-EU arrivals
After collecting your luggage, you'll have to clear customs. Duty and tax-free allowances are shown within the Customs Hall. Use the red point to declare goods over the allowance. Use the green channel if you have nothing to declare. If in doubt, use the red point. Don't use the blue channel. For a detailed breakdown of personal allowances for European Union or Non-European Union travel, head here.