Vaccinated people will be able to enter the US from the European Union - including Ireland - from November onwards.
The new rules would be part of broader policy changes for international travel and will apply to fully vaccinated people - meaning those who've received two doses of a vaccine.
All foreign travellers will need to demonstrate proof of vaccination before boarding, as well as proof of a negative COVID-19 test taken within three days of the flight.
But those fully vaccinated will not need to quarantine.
Airlines will be required to collect contacting tracing information - including phone numbers and email addresses - from international travellers.
The changes only effect air travel, with the order restricting overland travel from Canada and Mexico still in place and reviewed on a monthly basis.