Flies – Flies being present in a dream indicate a source of annoyance in your life. Flies are considered a pestilence in most societies. If you dream about a single fly, it indicates that there is a small single source of annoyance in your life that you need to root out and destroy. If you dream of a small number of flies it indicates that there is something festering in your life that you need to clean or get rid of; if you don’t you will only meet with hardship. If, on the other hand, you dream of an entire swarm of flies, it means that there are some major problems in your life that you need to fix or they will completely destroy you and everyone around you.