Flipkart Big Billion Day 2018 Sale Offers. Flipkart Big Billion Day 2018 will be returning this year between 10th-15th October to offer best deals on Fashion, TVs &on Home Furnishing products. Flipkart Big Billion Days sale will bring you best Offers on mobiles, electronics, laptops, fashion and all other categories available across Flipkart. In comparison to offering deals on smartphones, Flipkart is way better than its competitors &it Offers best deals during its big billion day sale. Flipkart Big Billion Day offers is expected to be bigger this year. Flipkart Big Billion Sale 2018 official dates are yet to be announced. But from our sources we have found that it…