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

🇺🇸 N213UA - Boeing 777 222 - United Airlines UAL1423/UA1423, Cancun (CUN) to Chicago O'Hare (ORD) - 4.2 mi away @ 38100 ft, heading N at 549 mph. Spotted 7x before. [05:13:44 PM CST] #A1C66A #N213UA #B772 #UNITED #UAL1423 #UA1423 #ADSB #ADSBbot

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

🇺🇸 N213UA - Boeing 777 222 - United Airlines UAL1423/UA1423, Cancun (CUN) to Chicago O'Hare (ORD) - 5.1 mi away @ 37500 ft, heading NNE at 603 mph. Spotted 6x before. [04:48:45 PM CST] #A1C66A #N213UA #B772 #UNITED #UAL1423 #UA1423 #ADSB #ADSBbot

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

🇺🇸 N213UA - Boeing 777 222 - United Airlines UAL1423/UA1423, Cancun (CUN) to Chicago O'Hare (ORD) - 4.8 mi away @ 39800 ft, heading N at 551 mph. Spotted 5x before! [05:03:55 PM CST] #A1C66A #N213UA #B772 #UNITED #UAL1423 #UA1423 #ADSB #ADSBbot

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

🇺🇸 N213UA - Boeing 777 222 - United Airlines UAL1423/UA1423, Cancun (CUN) to Chicago O'Hare (ORD) - 4.7 mi away @ 37775 ft, heading N at 535 mph. Spotted 4x before! [05:43:44 PM CST] #A1C66A #N213UA #B772 #UNITED #UAL1423 #UA1423 #ADSB #ADSBbot