A to B trill on flute: Low and High trill fingering

To play A to B natural trill on the flute, use the finger chart or follow the guidelines for finger placement below;

A to B trill chart on flute

A to B trill on flute

Low A to B trill on flute guidelines

 Left handRight hand
Index fingerclosedopened
Middle fingertrilling the A keyopened
Ring fingeropenedopened 
Little fingeropened D# lever closed
ThumbB key closed 

High A to B trill on flute guidelines

 Left handRight hand
Index fingerclosed could be trilling the F key
Middle fingercould be trilling the A keyopened
Ring fingerclosedclosed
Little fingeropenedopened
Thumbopened 

All flute note trills