A British Airways flight last month set a record for the fastest flight between New York and London. The flight was helped along by strong tailwinds as a result of Storm Ciara.

The plane covered the journey in four hours and 56 minutes, one hour and 20 minutes ahead of schedule and 17 minutes faster than the previous record held by a Norwegian Air flight.

“The pilot will have sat their aircraft in the core of the jet stream and at this time of year it’s quite strong,” said Alastair Rosenschein, aviation consultant and former BA pilot, to the BBC. “Turbulence in those jet streams can be quite severe, but you can also find it can be a very smooth journey.”

The jet stream reached speeds of 260 mph on the day of the flight, Feb. 9. The plane, a Boeing 747-400, reached speeds of 825 mph.

In a statement, British Airways said, “We always prioritise safety over speed records. Our highly-trained pilots made the most of the conditions to get customers back to London well ahead of time.”