Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇬🇧 G-ZBJI - Boeing 787 8 - British Airways BAW187/BA187, London Heathrow (LHR) to Austin-Bergstrom (AUS) - 5.3 mi away @ 44450 ft, heading SW at 542 mph. Spotted for first time! [06:36:23 PM CDT] #40731C #G_ZBJI #B788 #SPEEDBIRD #BAW187 #BA187 #autopilot #ADSB #ADSBbot