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

🇺🇸 N37506 - Boeing 737MAX 9 - United Airlines UAL1353/UA1353 (DFW-EWR-CLE) - 4.6 mi away @ 35700 ft, heading ENE at 668 mph. Spotted 3x before! [12:12:33 PM CDT] #A448D5 #N37506 #B39M #UNITED #UAL1353 #UA1353 #ADSB #ADSBbot

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

🇺🇸 N77576 - Boeing 737MAX 9 - United Airlines UAL1353/UA1353 (DFW-EWR-CLE) - 11.3 mi away @ 36050 ft, heading ENE at 609 mph. Spotted 4x before! [06:09:47 PM CDT] #AA7F06 #N77576 #B39M #UNITED #UAL1353 #UA1353 #ADSB #ADSBbot