These insects are annoying and they take away from the enjoyment of any moment or situation. Consider the details of your dream and try to figure out if these flies represent anything in your daily life. They could symbolize people and things that get in your way or they could mean that you are currently experiencing annoyance and frustration. Consider whether you are successfully getting rid of the flies in your dream or if they are overwhelming. This may give you a clue as to how well you are coping with distraction and frustration.