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

🇺🇸 N17529 - Boeing 737MAX 9 - United Airlines UAL2409/UA2409 (YYC-SFO-BWI) - 4.6 mi away @ 38625 ft, heading E at 544 mph. Spotted 4x before! [02:38:32 AM CDT] #A12E80 #N17529 #B39M #UNITED #UAL2409 #UA2409 #ADSB #ADSBbot

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

🇺🇸 N17335 - Boeing 737MAX 8 - United Airlines UAL2409/UA2409, George Bush Intcntl/Houston (IAH) to Laguardia (LGA) - 4.0 mi away @ 35600 ft, heading ENE at 641 mph. Spotted 5x before! [06:58:30 PM CDT] #A12731 #N17335 #B38M #UNITED #UAL2409 #UA2409 #ADSB #ADSBbot