If you have seen spider and fly in your dream: Giving importance to your personal development and making the changes you need may have positive returns, you may want to be in harmony in your bilateral relations. To see a spider and a fly in a dream, the spider symbolizes the house, marriage and home. The fly, on the other hand, is paired with people who disturb the person's peace. Seeing a spider and a fly together in a dream is not interpreted for good. It is said that there will be developments that will cause unrest in the person's home, mess up the place and spoil the taste of the mouth.