Per federal regulations, if you are a non-U.S. citizen who is a nonimmigrant (not a U.S. citizen, U.S. national, lawful permanent resident, or traveling to the United States on an immigrant visa), you will need to show proof of being fully vaccinated against COVID-19 before you travel by air to the United States from a foreign country. For more information, visit https://www.cdc.gov/
coronavirus/2019-ncov/. travelers/proof-of- vaccination.html
UPDATE: 06/02/2022: All athletes, officials, participants of the Northern Marianas Pacific Mini Games must fill out the Health Declaration Form regardless of place of origin including domestic travel through Guam. When prompted in the form, please enter “Other” under flight information and enter your Flight Number. All other travelers please see update below.
UPDATE 04/03/2022: Inbound air or sea domestic travelers (United Airlines, Military Arrivals, Sea Arrivals, etc.) are not required to fill out the Health Declaration Form. All international travelers are required to fill out the Health Declaration Form due to outbound testing requirements.