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

🇺🇸 N7867A - Boeing 737NG 7Q8/W - Southwest Airlines SWA3959/WN3959, Phoenix Sky Harbor (PHX) to Raleigh-Durham (RDU) - 4.3 mi away @ 39050 ft, heading ENE at 636 mph. Spotted 62x before! [08:38:22 PM CST] #AAAA1E #N7867A #B737 #SOUTHWEST #SWA3959 #WN3959 #ADSB #ADSBbot