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

🇺🇸 N872CB - Boeing 737MAX 8 - Southwest Airlines SWA4520/WN4520, William P Hobby (HOU) to Chicago Midway (MDW) - 6.6 mi away @ 39150 ft, heading NNE at 528 mph. Spotted 51x before. [08:43:10 AM CDT] #ABFDF8 #N872CB #B38M #SOUTHWEST #SWA4520 #WN4520 #ADSB #ADSBbot

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

🇺🇸 N8301J - Boeing 737NG 8H4/W - Southwest Airlines SWA4520/WN4520, William P Hobby (HOU) to Chicago Midway (MDW) - 5.3 mi away @ 38975 ft, heading NNE at 497 mph. Spotted 91x before. [08:41:19 AM CDT] #AB5ADE #N8301J #B738 #SOUTHWEST #SWA4520 #WN4520 #ADSB #ADSBbot