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

🇺🇸 N37547 - Boeing 737MAX 9 - United Airlines UAL326/UA326, Washington Dulles (IAD) to Seattle-Tacoma (SEA) - 4.6 mi away @ 35875 ft, heading W at 524 mph. Spotted 9x before! [07:04:20 PM CDT] #A44962 #N37547 #B39M #UNITED #UAL326 #UA326 #ADSB #ADSBbot

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

🇺🇸 N37516 - Boeing 737MAX 9 - United Airlines UAL326/UA326 (TPA-IAD-SEA) - 4.6 mi away @ 34050 ft, heading W at 512 mph. Spotted 7x before! [06:31:40 PM CDT] #A448F8 #N37516 #B39M #UNITED #UAL326 #UA326 #ADSB #ADSBbot