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

🇺🇸 N77520 - Boeing 737NG 824/W - United Airlines UAL1813/UA1813, Chicago O'Hare (ORD) to Austin-Bergstrom (AUS) - 4.9 mi away @ 38200 ft, heading SW at 464 mph. Spotted 10x before. [10:23:43 AM CDT] #AA7E51 #N77520 #B738 #UNITED #UAL1813 #UA1813 #ADSB #ADSBbot

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

🇺🇸 N16234 - Boeing 737NG 824/W - United Airlines UAL1813/UA1813, Chicago O'Hare (ORD) to Austin-Bergstrom (AUS) - 5.4 mi away @ 36250 ft, heading SW at 473 mph. Spotted 17x before. [10:43:50 AM CDT] #A0FBFA #N16234 #B738 #UNITED #UAL1813 #UA1813 #ADSB #ADSBbot