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

🇺🇸 N837UA - Airbus A319 131 - United Airlines UAL8173/UA8173 (CLE-ORD-DFW) - 4.2 mi away @ 36475 ft, heading SW at 469 mph. Spotted 36x before. [09:27:55 PM CST] #AB741E #N837UA #A319 #UNITED #UAL8173 #UA8173 #ADSB #ADSBbot

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

🇺🇸 N76523 - Boeing 737NG 824/W - United Airlines UAL8173/UA8173, Newark Liberty (EWR) to Cleveland-Hopkins (CLE) - 4.4 mi away @ 37675 ft, heading SW at 459 mph. Spotted 11x before! [09:19:41 PM CST] #AA56D5 #N76523 #B738 #UNITED #UAL8173 #UA8173 #ADSB #ADSBbot

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

🇺🇸 N16709 - Boeing 737NG 724/W - United Airlines UAL8173/UA8173 (EWR-CLE-ORD-DFW) - 4.8 mi away @ 38675 ft, heading SW at 436 mph. Spotted 22x before! [09:14:08 PM CST] #A10E29 #N16709 #B737 #UNITED #UAL8173 #UA8173 #ADSB #ADSBbot

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

🇺🇸 N35407 - Boeing 737NG 924/W - United Airlines UAL8173/UA8173 (CLE-ORD-PDX) - 3.6 mi away @ 4275 ft, heading WNW at 339 mph. Spotted 7x before! [11:17:15 PM CDT] #A3F621 #N35407 #B739 #UNITED #UAL8173 #UA8173 #Landing #ADSB #ADSBbot