When a home’s windows stop opening and closing properly or if they’re letting in cold air, it may be time for replacement windows. Knowing the overall cost of the best replacement windows can help keep homeowners within the project’s budget and avoid any surprise costs down the road. According to Angi and HomeAdvisor, the typical window replacement cost is between $180 and $2,100 per window, and the national average cost of window replacement is around $564 per window, depending on window frame material and glass type, among other factors. Labor adds to the overall window replacement cost and can run approximately $100 to $300 per window. The most common factors that affect window replacement cost are the type of window, window frame material, window size, and energy efficiency.