Magicalamity

Tom doesn't know he is a demisprite - the child of a fairy and a
human - until he meets his three fairy godmothers. They've been
summoned to protect him, but they can't stop bickering, and two of
them are hardened criminals. Tom must survive their botched magic
spells, learn to fly and enter the dangerous Fairy Realm to save
his parents...

From the author of BESWITCHED: "One of the most enchanting, funny
and suspenseful stories to have been published for some time" THE
TIMES