In general, Americans are still not welcome in many countries and vice versa. Also, in the extraordinary case that you can fly to another country, the logistics will be more complicated.

If you are traveling from the United States to Turkey, a negative COVID-19 test is required to enter, according to the U.S. Embassy and consulates in Turkey. In addition, to return to the United States, all travelers, including US citizens and those who are vaccinated, will have to re-submit a negative test performed no more than three days before departure.

When you’ve understood the logistics of getting in and out, you’ll have more homework to do. Don’t expect your favorite restaurants or bars at the airport to operate normally. Before leaving home, visit your airport’s website to see what businesses are open near your terminal; if your options are slim, pack food. Similarly, when you arrive at your destination, be sure to check the websites of the restaurants and tourist sites you hope to visit to find out their hours of operation. The travel industry is far from getting back to normal.

To make travel easier, airlines may require travelers to present a vaccination passport, that is, digital documentation showing that they have been vaccinated. Airlines have been testing mobile health apps, including CommonPass, ICC AOKpass, VeriFLY, and the International Air Transport Association (IATA) Travel Pass app, to make sure travelers can present your health data in a safe and verifiable way.

Most applications will theoretically work as follows: if you get vaccinated at a medical center, the application connects to that center’s database to retrieve your information. The application then loads a QR code, which is a digital barcode, to verify that the vaccine was administered. Later, you could show that barcode at the airport registration desk, the boarding gate, or immigration control.