International Travel Guidelines April 1, 2021 (For potential guideline updates please see here)
Travelers eligible to enter the US are to provide proof of a negative COVID-19 test result taken no more than three days prior to flight departure. An acceptable test result must be in the form of written documentation (paper or electronic copy) of a laboratory test result. Testing must be performed using a viral test (NAAT or antigen), and negative results must be presented to the airline prior to boarding. Failure to provide satisfactory proof of negative test will result in airline denying boarding of traveler. Alternatively, a documentation of recovery (proof of a recent positive viral test and a letter from a healthcare provider or a public health official stating that the passenger is cleared to travel) must be presented.
A Passenger Attestation form is also required to confirm that the information provided by passengers is true. This form can be found here.
Travelers entering the US from abroad are advised after arrival to practice social distancing measures, be tested three to five days following travel, and stay home for seven days after travel. Even if the test negative, the traveler is advised to stay home and self-quarantine for the full 7 days. If the test is positive, the traveler is advised to isolate to protect others from getting infected. If the traveler does not get tested, it's safest to stay home and self-quarantine for 10 days after travel. It is advised to avoid being around people who are at increased risk for severe illness for 14 days, whether testing is performed or not.
Travelers are advised to review state and local travel requirements as some areas have further restrictions and requirements in place.
Any traveler who presents symptoms of COVID-19 or tests positive for COVID-19 is required to delay travel and should self-isolate.
The US does not have any mandatory requirements for travelers departing the country. Travelers are advised to be tested again 1-3 days prior to departure as a precaution. Some countries only allow incoming travelers from the US in exceptional cases (diplomats, students, critical workers, etc.) and many have requirements including testing, quarantines, and travel forms that must be met.
Travelers leaving the US may reference the US Bureau of Consular Affairs page for their destination for specific details about entry requirements and restrictions for arriving travelers