Public sector oil firms have raised aviation turbine fuel (ATF) prices by over 4% in line with rise in international oil prices.ATF or jet fuel prices for domestic airlines in Delhi have been raised by 4.4% to Rs 37,746.92 per kilolitre (kl), while in Mumbai the price was hiked by Rs 1649.43 per kl (4.4%) to Rs 39,013.31 per kl, according to Indian Oil (IOC), country's largest fuel retailer.Public sector firms IOC, Bharat Petroleum and Hindustan Petroleum had on previous quaterly revisions lowered ATF price in line with international trends.For international airlines, who unlike domestic airlines do not pay local sales tax, the price in Delhi was raised by $27.6 to $648.22 per kl effective December 1. In Mumbai, the hike was $27.38 per kl to $642.73 per kl.