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

🇺🇸 N14511 - Airbus A321 271NXSL - United Airlines UAL1403/UA1403, Orlando (MCO) to Chicago O'Hare (ORD) - 4.5 mi away @ 34975 ft, heading N at 567 mph. Spotted 8x before! [03:38:04 PM CDT] #A0B7D8 #N14511 #A21N #UNITED #UAL1403 #UA1403 #ADSB #ADSBbot

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

🇺🇸 N54525 - Airbus A321 271NXSL - United Airlines UAL1403/UA1403 (MCO-ORD-CVG) - 4.6 mi away @ 35900 ft, heading NNE at 561 mph. Spotted for first time! [03:26:52 PM CDT] #A6ED3B #N54525 #A21N #UNITED #UAL1403 #UA1403 #ADSB #ADSBbot