The Biden administration is lifting its requirement that international air travelers to the U.S. take a COVID-19 test within a day before boarding their flights, easing one of the last remaining government mandates meant to contain the spread of the coronavirus.

The requirements set by the Biden administration take effect Nov. 8 and cover approved vaccines, exceptions for the unvaccinated and protocols after arrival.

Interest in international air travel is rising. If you're want to fly out of or into the United States, there's a lot you need to know. Here are answers to key questions.