"For the first time since the coronavirus pandemic began, all passengers ages 2 and older must present a negative coronavirus test taken no more than three days before their flight or proof they recovered from the virus within the past three months. Those who don't will be denied boarding. Canada, the United Kingdom and many other countries already had this entry requirement."
New COVID-19 test requirement for international flights to the US begins; are travelers (and airlines) ready?
Beginning Tuesday, passengers will not be able to board international flights to the U.S. without a negative coronavirus test or proof of recovery.
www.usatoday.com