"The flight resulted in a much stronger than normal jet stream, with winds of over 200 mph propelling the aircraft," says CNN senior meteorologist Brandon Miller.
"The overflow is also responsible for powering Storm Ciara, which has caused devastating winds and massive waves in the UK, Ireland and other parts of Northern Europe this weekend.
"Jet stream is a high-speed" river of air "in the atmosphere, around the height of commercial airplanes. Jet stream is responsible for transporting weather systems around the planet.
The plane landed at Heathrow Airport at 4:43 am, nearly two hours earlier than planned. Its top speed during the flight was 825 km / h, according to Flightradar24, an online flight monitoring service.
The flight tracking platform estimates that the average time it takes for a plane to fly between London and New York is six hours and 13 minutes.
Flightradar24 announced the record for the Twitter record, writing: "If we are not mistaken, BA is returning the fastest subnatural NY-London crossing the Norwegian."
A British Airways Boeing 747 arrives in New York on January 23, 2020.
Nicolas Economou / NurPhoto via Getty Images
The service added that the British Airways flight was one minute faster than a Virgin Air A350, which fell into Heathrow's hands later. It succeeded another Virgo aircraft, which landed half an hour later three minutes later.
All three flights comfortably reached the previous record of five hours and 13 minutes, which Norwegian has held since January 2018.
Although the BA plane was apparently timed faster than the speed of sound – 767 miles / hour – it would not have violated the sound barrier because of the pressure from the air around it. Even when traveling at more than 800 miles / hour, the 747 travels much slower than the speed of sound in relation to the air around it.
A BA spokesman said: "We always give security priority over speed records, but our highly trained pilots made the most of the conditions to get customers back to London much earlier."
A company spokesman told CNN that BA, like all other airlines flying to and from the United Kingdom, was affected by Storm Ciara – and had canceled some of its flights and joined others.
CNN's Barry Neild contributed to this report