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

🇺🇸 N24729 - Boeing 737NG 724/W - United Airlines UAL743/UA743, Chicago O'Hare (ORD) to Tucson (TUS) - 4.7 mi away @ 37400 ft, heading SW at 507 mph. Spotted 32x before! [10:12:04 AM CDT] #A24CC0 #N24729 #B737 #UNITED #UAL743 #UA743 #ADSB #ADSBbot

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

🇺🇸 N38727 - Boeing 737NG 724/W - United Airlines UAL743/UA743, Chicago O'Hare (ORD) to Tucson (TUS) - 4.5 mi away @ 39200 ft, heading WSW at 464 mph. Spotted 13x before! [10:40:18 AM CDT] #A47809 #N38727 #B737 #UNITED #UAL743 #UA743 #ADSB #ADSBbot