Beginning Jan. 26, 2021, all air passengers entering the U.S. must provide a negative COVID-19 test before boarding their flight, as required by the CDC.
Passengers are required to get a test within three days of their departure. Written documentation of the negative test result must be provided to the airline before boarding, or the airline will not allow you to board. If you have previously been infected with COVID-19, but are no longer contagious, you can provide documentation of your recovery in lieu of a negative test result.
Upon arrival to the U.S., the CDC recommends that passengers get tested again 3-5 days after arrival and stay home for at least one week.