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

🇺🇸 N8734Q - Boeing 737MAX 8 - Southwest Airlines SWA1039/WN1039, Baltimore/Washington Thurgood Marshall (BWI) to Austin-Bergstrom (AUS) - 4.4 mi away @ 9675 ft, heading SW at 319 mph. Spotted 55x before. [09:56:51 PM CDT] #AC046E #N8734Q #B38M #SOUTHWEST #SWA1039 #WN1039 #TakingOff #ADSB #ADSBbot

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

🇺🇸 N7734H - Boeing 737NG 7BD/W - Southwest Airlines SWA1039/WN1039, St Louis Lambert (STL) to Dallas Love Field (DAL) - 3.3 mi away @ 9800 ft, heading SW at 329 mph. Spotted 58x before. [10:01:47 PM CDT] #AA7718 #N7734H #B737 #SOUTHWEST #SWA1039 #WN1039 #TakingOff #Departure #ADSB #ADSBbot