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

🇺🇸 N37287 - Boeing 737NG 824/W - United Airlines UAL2731/UA2731 (SFO-IAH-LGA) - 4.8 mi away @ 36725 ft, heading NE at 600 mph. Spotted 14x before! [07:28:46 PM CDT] #A43EC9 #N37287 #B738 #UNITED #UAL2731 #UA2731 #ADSB #ADSBbot

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

🇺🇸 N17245 - Boeing 737NG 824/W - United Airlines UAL2731/UA2731 (SFO-IAH-LGA) - 5.3 mi away @ 36725 ft, heading NE at 600 mph. Spotted 22x before! [07:42:16 PM CDT] #A1239D #N17245 #B738 #UNITED #UAL2731 #UA2731 #ADSB #ADSBbot