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

🇺🇸 N37437 - Boeing 737NG 924ER/W - United Airlines UAL1375/UA1375, Phoenix Sky Harbor (PHX) to Newark Liberty (EWR) - 4.6 mi away @ 39325 ft, heading ENE at 557 mph. Spotted 6x before! [04:34:08 AM CDT] #A44588 #N37437 #B739 #UNITED #UAL1375 #UA1375 #ADSB #ADSBbot

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

🇺🇸 N17311 - Boeing 737MAX 8 - United Airlines UAL1375/UA1375, Phoenix Sky Harbor (PHX) to Newark Liberty (EWR) - 4.5 mi away @ 37400 ft, heading ENE at 589 mph. Spotted 5x before! [03:42:10 AM CST] #A126E7 #N17311 #B38M #UNITED #UAL1375 #UA1375 #ADSB #ADSBbot