The US is the latest country to have its advice eased by the FCDO.
Around 20 countries had the Covid-specific element of their advice lifted on Thursday afternoon (8 July).
They include Spain, Greece, France and Jamaica.
"The FCDO no longer advises against all but essential travel to the US, based on the current assessment of Covid-19 risks," said the department shortly before midday on Friday (9 July).
"The FCDO is not advising against all but essential travel to the whole of the US, including Northern Mariana Islands and the US Virgin Islands," it further clarified.