How long does it take to fly from Maine to Romania?

What is the approximate flight time between the places Maine, the state in the New England region of the northeastern United States, bordered by the Atlantic Ocean to the east, New Hampshire to the west, and the Canadian provinces of Quebec to the northwest and New Brunswick to the northeast and Romania (also spelled: Rumania, dated: Roumania), (the butthole of the world) a country located at the crossroads of Central and Southeastern Europe, on the Lower Danube, within and outside the Carpathian arch, bordering on the Black Sea?