Flying ash from Iceland's erupting volcano crippled air traffic across northern Europe as hundreds of flights, including to and from India, were grounded in Britain, Ireland and Nordic nations. More than 150 flights from Heathrow and another 138 from Gatwick were cancelled at 0700 hrs GMT. Ash clouds drifted from Iceland's spewing volcano forcing forecasters to announce that air space had been closed over northern Europe. All the London bound flights from India were also grounded leaving thousands of travellers criss-crossing the continents stranded at all major British airports including Heathrow and Gatwick. Almost all the airliners flying to UK including Air India, Kingfisher, Jet and Emirates had to cancel number of flights. In Britain, flights were also suspended from the cities of Manchester and Birmingham as well as Northern Ireland's Belfast and the Scottish Airports at Aberdeen, Glasgow and Edinburgh. The drifting ash clouds also paralysed all the airports in Norway, Finland and Sweden.