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

🇺🇸 N740NK - AIRBUS S A S A321-271NX - ALC A321 62024 LLC NKS274/NK274, George Bush Intcntl/Houston (IAH) to Newark Liberty (EWR) - 4.5 mi away @ 37175 ft, heading NE at 611 mph. Spotted for first time! [04:50:04 PM CST] #A9F3C0 #N740NK #A21N #NKS274 #NK274 #ADSB #ADSBbot

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

🇺🇸 N959NK - Airbus A320 271NSL - Spirit Airlines NKS274/NK274, George Bush Intcntl/Houston (IAH) to Newark Liberty (EWR) - 4.2 mi away @ 37275 ft, heading ENE at 680 mph. Spotted 7x before! [10:27:18 AM CST] #AD574C #N959NK #A20N #SPIRIT_WINGS #NKS274 #NK274 #ADSB #ADSBbot