e of oil falls to US$36 a barrel.Airliners have already managed to save US$1.1 billion this year by negotiating with governments, notably in Iraq, China and Mexico, to make flights more direct to reduce the duration of the journey.IATA companies, which exclude low cost fliers such as Easyjet and Ryanair, would save a total US$2.7 billion a year for every one minute that is cut off the length of a