If the cockroach often shows up in dreams as a simple extension of its regular daytime appearances, there is no hidden meaning. If you have a pest-free home and still dream of roaches, however, your finances may be careening out of control. To dream of giant or flying roaches indicates a fear of confronting unfinished business. Bring everything into the open. Shine some light into your dark places, or the menaces you face could end up eating you out of house and home.