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

🇺🇸 N8558Z - Boeing 737NG 800/W - Southwest Airlines SWA3820/WN3820, Baltimore/Washington Thurgood Marshall (BWI) to Harry Reid (LAS) - 5.1 mi away @ 36050 ft, heading W at 500 mph. Spotted 72x before! [01:42:57 PM CDT] #ABBD73 #N8558Z #B738 #SOUTHWEST #SWA3820 #WN3820 #ADSB #ADSBbot

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

🇺🇸 N8841L - Boeing 737MAX 8 - Southwest Airlines SWA3820/WN3820, Baltimore/Washington Thurgood Marshall (BWI) to Harry Reid (LAS) - 4.6 mi away @ 37625 ft, heading W at 442 mph. Spotted 77x before! [03:59:39 PM CDT] #AC2F37 #N8841L #B38M #SOUTHWEST #SWA3820 #WN3820 #ADSB #ADSBbot