Virtue theory is not actually in conflict with deontology or teleology: those two viewpoints deal with which actions a person should take in any given scenario, whereas virtue theorists simply argue that developing morally desirable virtues for their own sake will help aid moral actions when such decisions need to be made.
Nick Gier in Buddhist Ethics as Virtue Ethics compares Buddha's ethical teachings to Aristotle's: "Like Greek virtue ethics, Buddhist ethics is also humanistic and thoroughly personalist." Damien Keown devotes a great deal of his work to debunking claims that Buddhism is Utilitarian in nature. His work then goes on to examine the structure of Buddhist Ethics, focusing specifically on morality (Pali: siila). His conclusion is that Buddhist Ethics most closely resembles the ancient Greek virtue ethics found in Aristotle.