Is a Flute Closed at One End?

The flute (photo at left) is a nearly cylindrical instrument which is open to the outside air at both ends*. The player leaves the embouchure hole open to the air, and blows across it. ... The two instruments have roughly the same length.

Is a flute an open pipe?

Flutes are cylindrical, and behave like open cylindrical pipes. The sound is made by blowing across the opening at the head joint, and it is not closed like in other woodwinds. Clarinets are cylindrical like the flute, but closed at the reed, so they behave like closed cylindrical pipes.

Which end of the flute is closed?

Basically, an open hole flute literally has holes in five of the keys, just like a Polo mint but a closed hole flute, you have probably already worked out, has full keywork. When the handle of a ball valve is parallel to the valve or pipe, it's open. When it's perpendicular, it's closed.