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

🇺🇸 N14507 - Airbus A321 271NXSL - United Airlines UAL2378/UA2378 (PHL-ORD-LAX) - 3.9 mi away @ 34075 ft, heading WSW at 476 mph. Spotted 3x before! [10:55:33 PM CDT] #A0B7BB #N14507 #A21N #UNITED #UAL2378 #UA2378 #ADSB #ADSBbot

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

🇺🇸 N17262 - Boeing 737MAX 8 - United Airlines UAL2378/UA2378, Newark Liberty (EWR) to Harry Reid (LAS) - 4.3 mi away @ 38750 ft, heading W at 430 mph. Spotted 9x before! [07:32:30 AM CST] #A123E0 #N17262 #B38M #UNITED #UAL2378 #UA2378 #ADSB #ADSBbot