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

🇺🇸 N919DU - Boeing 737NG 900ER/W - Delta Air Lines DAL1409/DL1409 (SLC-RDU-SLC) - 4.1 mi away @ 32900 ft, heading W at 451 mph. Spotted 23x before! [07:20:42 PM CDT] #ACB878 #N919DU #B739 #DELTA #DAL1409 #DL1409 #ADSB #ADSBbot

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

🇺🇸 N838DN - Boeing 737NG 932ER/W - Delta Air Lines DAL1409/DL1409 (SLC-RDU-SLC) - 4.5 mi away @ 36150 ft, heading ESE at 574 mph. Spotted 16x before! [02:46:41 PM CDT] #AB766A #N838DN #B739 #DELTA #DAL1409 #DL1409 #ADSB #ADSBbot