The 787 aircraft cruising speed is around 561 mph….
But on February 18, 2019 the jet stream was doing about 231 mph over Pennslyvania to Long Island New York….
A Virgin Atalntic flight from Los Angles to London heading towards the East Coast at 35,000 feet before crossing the Atlantic caught that same jet stream wind and rode it up to a record breaking speed of 801 mph for a while…..
The rapid winds aloft where caused by weather that actually originated in the Pacific in February ….
On Monday night, the river of air 35,000 feet above the New York City area, known as the jet stream, clocked in at a blazing 231 mph. This is the fastest jet stream on record since 1957 for the National Weather Service in Upton, New York — breaking the old record of 223 mph, according to NWS forecaster Carlie Buccola.
This wind provided a turbo boost to commercial passenger planes along for the ride. With the help of this rapid tailwind, Virgin Atlantic Flight 8 from Los Angeles to London hit what could be a record high speed for a Boeing 787: 801 mph over Pennsylvania at 9:20 p.m. Monday night.
“Wow, that’s fast,” a Boeing spokesman told CBS News via email. But it’s not something the plane manufacturer tracks, so they can’t confirm if 801 mph is a record.
“The typical cruising speed of the Dreamliner is 561 mph,” CBS News transportation correspondent Kris Van Cleave points out. “The past record for the 787 is 776 mph set in January 2017 by a Norwegian 787-9 flying from JFK to London Gatwick. That flight set a record for the fastest subsonic transatlantic commercial airline flight — 5 hours and 13 minutes, thanks to a 202 mph tailwind.”….