https://www.tsa.gov/sites/default/files/ea_1546-21-02b.pdf

The requirement for proof of being fully vaccinated against COVID-19 has been extended until April 10, 2023. This includes all flights departing at or after 00:01 EST (05:01 GMT) on January 9, 2023.

The foreign air carrier must require that each covered Individual, prior to boarding a flight to the United States, and consistent with the CDC Order and Technical Instructions, has:

1. Presented paper or digital documentation of Proof of Being Fully Vaccinated Against COVID-19, consistent with the CDC Order and Technical Instructions, that includes personal identifiers (e.g., name and date of birth) that match the personal identifiers on the passenger’s passport or other travel documents; or

2. Presented documentation proving that they are an Excepted Covered Individual, under the Proclamation and the CDC Order as further explained in the CDC Technical Instructions.