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

🇺🇸 N23721 - Boeing 737NG 724/W - United Airlines UAL8165/UA8165 (SNA-SFO-YVR) - 5.0 mi away @ 38500 ft, heading SW at 535 mph. Spotted 18x before! [10:41:34 PM CDT] #A22539 #N23721 #B737 #UNITED #UAL8165 #UA8165 #ADSB #ADSBbot

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

🇺🇸 N24510 - Airbus A321 271NXSL - United Airlines UAL8165/UA8165 (SMF-ORD-IAH) - 4.1 mi away @ 33950 ft, heading SSW at 522 mph. Spotted for first time! [10:41:45 PM CDT] #A24526 #N24510 #A21N #UNITED #UAL8165 #UA8165 #ADSB #ADSBbot