Heathrow Airport closes for the day after fire outbreak leads to power outage

Britain’s busiest airport, Heathrow, will be closed until 23:59 on 21 March. This news follows after a nearby substation fire triggered a major power outage.

At least 1,351 flights to and from the airport in west London could be canceled today, according to flight tracking website Flightradar24.

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A significant fire at a nearby electrical substation has led to an unreliable power supply at Heathrow Airport. The incident has also caused power outages to over 16,000 homes in West London.

Passengers are told not to travel to the airport ‘under any circumstances’, and more than a thousand flights will be disrupted.

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Heathrow Airport is CLOSED until 23:59 on 21 March after a nearby substation fire triggered a major power outage.

Passengers warned not to travel to terminals as significant disruption expected. Crews still working to restore electricity.#Heathrow #UKTravel pic.twitter.com/oPZU9bSJku

— British Pakistani Index (@PakistaniIndex) March 21, 2025

Due to a fire at an electrical substation supplying the airport, Heathrow is experiencing a significant power outage.

To maintain the safety of our passengers and colleagues, Heathrow will be closed until 23h59 on 21 March.

Passengers are advised not to travel to the airport… pic.twitter.com/7SWNJP8ojd

— Heathrow Airport (@HeathrowAirport) March 21, 2025