A United Airlines passenger plane arrives over the apartment buildings to land at Heathrow Airport in west London, UK on March 13, 2020.
Matthew Childs | Reuters
The Centers for Disease Control and Prevention said Monday to “avoid traveling to the UK” as the delta-Covid-19 variant continues to spread.
The warning reads “Level 4” which is the highest from the CDC. It’s not binding, but it comes after airline executives and other members of the travel industry urged the Biden administration to ease travel restrictions on Covid.
The United States has banned non-US citizens from the EU, the UK and other countries from entering the country for much of the pandemic, although several European nations recently opened their doors to international visitors. However, Canada announced Monday that it will allow fully vaccinated US citizens for non-essential travel to the country from Aug. 9.
The White House and State Department did not immediately respond to requests for comment.
The CDC said people traveling to the UK should be fully vaccinated against Covid-19. Meanwhile, England lifted remaining Covid-19 restrictions on Monday, allowing indoor gatherings and nightclubs to reopen.
However, Covid infections remain high across the UK, according to a CNBC analysis of data compiled by Johns Hopkins University. 316,691 cases have been reported in the past seven days, an increase of about 43% over the previous seven-day period.
U.S. airline stocks fell sharply on Monday as the surge in Delta variant cases raised concerns about the economic recovery and the potential impact on the recent surge in travel demand after a slump for much of last year.
Covid cases in the U.S. have increased about 66% over the past week to a seven-day average of about 32,300 new cases per day, according to Hopkins data.
-CNBCs Holly Elliatt contributed to this article.