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

🇺🇸 N57439 - Boeing 737NG 924ER/W - United Airlines UAL8117/UA8117 (SAN-SFO-DEN) - 4.1 mi away @ 36225 ft, heading E at 604 mph. Spotted 16x before. [06:30:35 PM CST] #A76028 #N57439 #B739 #UNITED #UAL8117 #UA8117 #ADSB #ADSBbot

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

🇺🇸 N73278 - Boeing 737NG 824/W - United Airlines UAL8117/UA8117, Montréal-Pierre Elliott Trudeau (YUL) to Saint John (YSJ) - 4.6 mi away @ 39250 ft, heading E at 536 mph. Spotted 4x before! [09:01:23 PM CDT] #A9D5E7 #N73278 #B738 #UNITED #UAL8117 #UA8117 #ADSB #ADSBbot