The state-run oil companies today again raised jet fuel prices by over 1.7 per cent than the previous one. New rates will be effective from midnight tonight . Aviation turbine fuel (ATF) rates in Delhi have been raised by 688 rupees to 40,192 rupees per kilolitre.This was informed by an official of Indian Oil Corp in New Delhi today. <br/><br/>In Mumbai, the price of ATF was today raised by 717 rupees to 41,469 rupees per kl. The hike comes on the back of a massive 7.17 per cent cut in ATF prices to 39,503.56 rupees per kl from June 1. This was the first cut in nearly four months, which came amidst softening of global oil rates. <br/><br/>Jet fuel constitutes roughly 40 per cent of the operating cost of an airline and today's hike in fuel rates will increase the burden on Indian carriers.No immediate comment could be obtained from airlines on the price reduction and if it would be passed on to passengers.<br/>