LAHORE: Pakistan International Airlines has decided to restrict its flight operation for Lahore. It will operate flights from 11am to 6pm till Jan 10 due toheavyfogandtoavoidinconveniencetopassengers, says a press release. According to a PIA spokesman, flight PK 712/ Jan 4 will land at Islamabad instead of Lahore while PK 852/ Jan 4 for Beijing and Tokyo will operate from Islamabad instead of Lahore.