Effective January 26, 2021 travelers arriving in the U.S. must: get tested for COVID-19 no more than 3 days before departing to the USA and show a negative test result to the airline before boarding OR show documentation of recent recovery from COVID-19 to the airline before boarding. Both PCR and rapid antigen type tests are accepted.
This new order applies to all air passengers - including U.S. citizens and legal permanent residents - aged 2 years and older. Acceptable documentation of recovery from COVID-19 includes both a positive viral test result within 3 months of travel AND a letter from a healthcare provider or public health official stating that the passenger is cleared to end isolation.