Beginning January 5th, there are new requirements for air passengers 2 years of age and older traveling to the United States from China, Hong Kong, or Macau, and those traveling from Seoul, Toronto, and Vancouver who have been in China, Hong Kong, or Macau in the past 10 days. These passengers, regardless of citizenship or vaccination status, are required to show a negative COVID-19 test result taken no more than 2 days before their flight departs. Those who had COVID-19 in the 90 days before their travel to the United States can instead show documentation of recovery from COVID-19.
Follow all requirements of transportation operators (such as airlines, cruise lines, buses) and any local requirements, including mask-wearing, proof of vaccination, or testing at your destination.
Visit the CDC website for more information on both international and domestic travel.