The EU's new plan would see member states adopting uniform entry requirements, meaning vaccinated holidaymakers from low-risk countries - such as the United States and the UK - would be able to enter its member states.
America is expected to be included on the EU's expanded 'green list' of permitted holiday travel on Wednesday as the bloc's ambassadors are set to confirm a European Commission proposal to lift restrictions on well-vaccinated nations.
Those without vaccinations will be required to present a negative Covid test or evidence of immunity, which can come from recently recovered from the virus.
For travelers from the UK, it is expected that member states will be recommended to prepare digital portals that will allow Britons to use the country's health service app as a vaccine passport, the Daily Telegraph reported.
But the US has no such nation-wide app, and so vaccinated US travelers will likely be asked to input information from their vaccines cards before travel, although exactly how this would work in practice is currently unclear.