The cost of 3 BHK flats in Bangalore can vary depending on various factors such as location, amenities, and size. On average, the cost of a 3 BHK flat in Bangalore ranges between ₹80 lakhs to ₹2 crores. However, it is important to note that these prices are subject to change and may vary based on the specific area and real estate market conditions. It is advisable to consult with real estate agents or websites for the most up-to-date pricing information.