All travelers to Ireland from overseas must complete a Passenger Locator Form. If travelers have acceptable proof of vaccination or evidence of recovery from Covid-19 within the past six months, they don't need to present an additional pre-departure Covid-19 test result.
As of February 1st, 2022:
vaccine certificates for primary vaccination series will not be accepted for travel if more than 270 days have passed since the final dose in the primary vaccine series
vaccine certificates based on booster/additional doses are not time-limited
A standard acceptance period of 14 days after the final dose in a primary vaccine series of a vaccine will be required for all vaccines accepted for travel to Ireland. Travelers without proof of vaccination or recovery must show a negative PCR test result taken within 72 hours of arrival.
Only PCR test results are accepted for travelers to Ireland.
If a traveler cannot present a negative PCR test result due to prior infection, a positive PCR result from a test taken 11 or more days before the date the person arrives but no more than 180 days prior to the date the traveler arrives will be accepted.
It is not allowed and an offense if an individual travels to Ireland from overseas without a pre-departure test result unless exempted. A passenger who travels without a test result or an exemption must take a PCR test within 36 hours following arrival.