Those hoping that dipping oil prices would translate to cheaper airfares will be disappointed according to reports. Although the cheaper commodity makes jet fuel – a major expense for airlines – less costly, airline chiefs at the Singapore Airshow said the plunge in oil prices – which are down as much as 80 per cent since mid-2014 – are taking a bite out of their premium traffic. Akbar Al Baker, chief executive of Qatar Airways, said the dip is reducing the busin...