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

🇺🇸 N37547 - Boeing 737MAX 9 - United Airlines UAL1845/UA1845, Baltimore/Washington Thurgood Marshall (BWI) to Los Angeles (LAX) - 4.2 mi away @ 35275 ft, heading W at 498 mph. Spotted 10x before! [08:11:29 PM CDT] #A44962 #N37547 #B39M #UNITED #UAL1845 #UA1845 #ADSB #ADSBbot

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

🇺🇸 N27520 - Boeing 737MAX 9 - United Airlines UAL1845/UA1845, Baltimore/Washington Thurgood Marshall (BWI) to Los Angeles (LAX) - 4.6 mi away @ 36100 ft, heading W at 547 mph. Spotted 7x before! [06:46:11 PM CDT] #A2BBC6 #N27520 #B39M #UNITED #UAL1845 #UA1845 #ADSB #ADSBbot

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

🇺🇸 N17403 - BOEING 737 MAX 9 - UMB BANK NA TRUSTEE UAL1845/UA1845, Baltimore/Washington Thurgood Marshall (BWI) to Los Angeles (LAX) - 4.6 mi away @ 35850 ft, heading W at 534 mph. Spotted for first time! [07:21:59 PM CDT] #A12A7D #N17403 #B39M #UAL1845 #UA1845 #ADSB #ADSBbot