London's Heathrow Airport reopened on Saturday after a power outage at one of the world's busiest airports the previous day caused widespread chaos and cancellations.

London's Heathrow Airport, one of the busiest in the world, closed on Friday due to a "significant power outage," it said. The airport said in a statement early Friday that it would be closed until 11:59 p.

The blaze knocked out power at the British airport, one of the world’s busiest. The fire occurred at an electrical substation supplying the airport, according to Heathrow. As a result, more than 1,300 flights and hundreds of thousands of passengers were impacted by the closure, according to multiple news reports.