The airport said it had made space for extra flights, but it is expected to take days to get stranded passengers to their destinations and displaced aircraft into the proper locations.

A fire at an electrical substation supplying London Heathrow Airport caused a major power outage, leading to the grounding of thousands of flights and the evacuation of 180 people. Authorities are investigating the cause, while airlines like British Airways work to rebook stranded passengers amid widespread travel disruption.

Heathrow Airport said it expected “significant disruption" over the coming days due to the power outage caused by the fire at a nearby electrical substation. The airport had previously said it would be shut until at least midnight local time, with no flights leaving today.