The 10% hike in Aviation Turbine Fuel (ATF) prices has come into effect and will now cost ₹115/litre in Delhi, CNBCTV18 reported. The hike is based on the centre's price stabilisation fund under which domestic airlines can buy ATF at a fixed price of ₹86.32/litre for up to three years. Airlines which don't opt in will pay market-linked rates.