1
general::
Phrase(s): fly at someone or something
to attack someone or something suddenly and violently. • The angry bird flew at its attacker. • She flew at him, threatening to scratch his eyes out.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Attack fiercely, assault. For example, The dogs flew at each other's throats. [Late 1500s]
American Heritage Idioms