LONDON - DECEMBER 22:  (FILE PHOTO) Tail fins of British Airways aircraft are seen through fog at Heathrow Airport on December 22, 2006 in London, England. British Airways have announced their half year profits have fallen 91.6% the airline blame the difficult trading conditions for the drop. Getty Images logo Getty Images 66 months ago

LONDON - DECEMBER 22: (FILE PHOTO) Tail fins of British Airways aircraft are seen through fog at Heathrow Airport on December 22, 2006 in London, England. British Airways have announced their half year profits have fallen 91.6% the airline blame the difficult trading conditions for the drop.