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

🇺🇸 N776UA - Boeing 777 222 - United Airlines UAL1423/UA1423, Cancun (CUN) to Chicago O'Hare (ORD) - 4.4 mi away @ 37425 ft, heading NNE at 525 mph. Spotted 4x before. [05:03:01 PM CST] #AA8114 #N776UA #B772 #UNITED #UAL1423 #UA1423 #ADSB #ADSBbot

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

🇺🇸 N776UA - Boeing 777 222 - United Airlines UAL1423/UA1423, Cancun (CUN) to Chicago O'Hare (ORD) - 4.3 mi away @ 36700 ft, heading NNE at 539 mph. Spotted 3x before! [05:10:22 PM CST] #AA8114 #N776UA #B772 #UNITED #UAL1423 #UA1423 #ADSB #ADSBbot