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

🇬🇧 G-YMMR - Boeing 777 236ER - British Airways BAW91C/BA91C, London Heathrow (LHR) to Austin-Bergstrom (AUS) - 5.0 mi away @ 41325 ft, heading SSW at 543 mph. Spotted 2x before! [01:57:48 PM CDT] #405BFB #G_YMMR #B772 #SPEEDBIRD #BAW91C #BA91C #ADSB #ADSBbot

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

🇬🇧 G-YMMR - Boeing 777 236ER - British Airways BAW91C/BA91C, London Heathrow (LHR) to Austin-Bergstrom (AUS) - 5.4 mi away @ 40025 ft, heading SW at 526 mph. Spotted once before! [02:08:04 PM CDT] #405BFB #G_YMMR #B772 #SPEEDBIRD #BAW91C #BA91C #ADSB #ADSBbot