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

🇺🇸 N8618N - Boeing 737NG 8H4/W - Southwest Airlines SWA781/WN781, Baltimore/Washington Thurgood Marshall (BWI) to Albuquerque Sunport (ABQ) - 4.5 mi away @ 37650 ft, heading W at 454 mph. Spotted 76x before! [07:39:40 PM CST] #ABD60B #N8618N #B738 #SOUTHWEST #SWA781 #WN781 #ADSB #ADSBbot