.....A Virgin Atlantic Los Angeles-to-London flight on Monday got a ride on an especially powerful jet stream, reaching a stunning 801 mph while over Pennsylvania.
— David Priess (@DavidPriess) 19 February 2019
This appears to be a record for the Boeing 787-9 twin jet, which ordinarily cruises at 561 mph.https://t.co/Fqf1FDivp4