An estimated 1,351 flights, including those operated by Air India, were cancelled or diverted Friday after London's Heathrow airport shut down for the day. This was after a fire at an electrical substation in the western part of the city triggered a widespread power outage.
There is no word yet on when power will be restored to the airport, authorities told the BBC.
Apart from chaos at Heathrow - one of the busiest airports in the world and largest of five serving London and nearby areas - more than 16,000 homes in the UK capital lost power.