Fiber optic cable installation costs average $4,500 for most homeowners, with most installations ranging from $1,500 to $7,000. The main cost drivers include material type, run length, trenching or aerial work, and any required permits or inspections. With prices ranging from $1 to over $ 50 per linear foot, depending on the installation method. In the United States, customers typically pay for fibre optic installation per kilometer with separate line items for trenching, conduit, cable, and labor. This article provides cost. Cost of Laying Fiber Optic Cable in the U.