Trill fingerings for the flute
The following pictures show the keys to trill in red. The black keys are to be closed. The two parts of the thumb double key are only shown separately if it is important for the fingering.
Shown are only those fingerings, which differ from the standard fingerings. Each trill changes the written note with the one above. For playing a composition this means the tone one above with the accidental of the key of the composition. Additional accidentals for the upper note are given on top of the trill.
Of course there are more trill fingerings availabe. Anybody needing a really comprehensive overview, should try this book: Grifflexikon der Boehmflöte. For practising you might download this table of trill fingerings in pdf format