At present there are no direct flights to Japan from Ireland. You should contact your local travel agent to discuss the most suitable flight options for your trip.
Irish citizens travelling to Japan for a period no longer than 90 days do not require a visa. All non-Japanese nationals entering Japan are fingerprinted and photographed on landing in accordance with national immigration legislation. Any person refusing to provide biometric data on landing may be denied entry to Japan. For further information on immigration procedures, please see the website of the National Immigration Bureau of Japan or contact the Embassy of Japan in Dublin.