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

🇺🇸 N27270 - Boeing 737MAX 8 - United Airlines UAL2140/UA2140 (SAN-IAH-LGA) - 5.3 mi away @ 38775 ft, heading NE at 599 mph. Spotted 10x before! [06:13:25 PM CDT] #A2B150 #N27270 #B38M #UNITED #UAL2140 #UA2140 #ADSB #ADSBbot

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

🇺🇸 N35271 - Boeing 737NG 824/W - United Airlines UAL2140/UA2140 (SAN-IAH-LGA) - 3.6 mi away @ 27825 ft, heading NE at 528 mph. Spotted 13x before! [06:05:07 PM CDT] #A3EFA2 #N35271 #B738 #UNITED #UAL2140 #UA2140 #ADSB #ADSBbot