Croatia Airlines has made the wearing of face masks or facial coverings compulsory for all passengers on board its aircraft as of today. Acceptable facial coverings include double layer cotton face masks, surgical masks and filtering half masks with or without a valve (FFP2/N95). The Croatian carrier currently operates a single daily flight between Zagreb and Frankfurt. As of next Monday (May 11), the airline will resume domestic flights from the Croatian capital to Dubrovnik and Split, both of which will initially operate twice per day. Together with Lufthansa, Croatia Airlines is one of the first European carriers to make the wearing of face masks compulsory on all flights.