IRISH PEOPLE travelling to the US from today need to obtain online travel authorisation before they leave.
A new system requiring travellers to register their personal details at least 72 hours before departure comes into force today, replacing the existing in-flight visa waiver system.
Visitors without clearance can be refused the right to board US-bound aircraft in Ireland.
US immigration authorities say over 99 per cent of applicants receive clearance, most of them instantly. Those refused must apply for a visa, which takes time.
Electronic System for Travel Authorization (Esta), the new system allowing the US authorities to vet travellers before they get on flights, has been operating on a voluntary basis since August.
The service is free. Travel agents have warned travellers about online scams charging $50 for help in making the application.
The website address is: https://esta.cbp.dhs.gov/esta/
