Thought that was a thing of the past with all the high tech about these days. Even Liverpool diverted to Blackpool. This could mean less consumption of the IRISH MEDICINE when travelling back and forth. LONDON (Reuters) - British Airways said it had been forced to cancel 160 of its 400 shorthaul flights to and from Heathrow Airport on Wednesday due to heavy fog that was expected to linger for another two days. Domestic routes and flights between Heathrow and Europe were the worst hit, while BA said it had managed to operate its longhaul schedule despite some lengthy delays.