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

🇺🇸 N17337 - Boeing 737MAX 8 - United Airlines UAL2057/UA2057, Baltimore/Washington Thurgood Marshall (BWI) to Denver (DEN) - 4.1 mi away @ 35725 ft, heading W at 480 mph. Spotted 5x before! [10:57:43 AM CDT] #A12733 #N17337 #B38M #UNITED #UAL2057 #UA2057 #ADSB #ADSBbot

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

🇺🇸 N77259 - Boeing 737MAX 8 - United Airlines UAL2057/UA2057, Baltimore/Washington Thurgood Marshall (BWI) to Denver (DEN) - 4.4 mi away @ 38025 ft, heading W at 485 mph. Spotted 7x before! [11:12:16 AM CDT] #AA739E #N77259 #B38M #UNITED #UAL2057 #UA2057 #ADSB #ADSBbot

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

🇺🇸 N14250 - Boeing 737NG 824/W - United Airlines UAL2057/UA2057, Baltimore/Washington Thurgood Marshall (BWI) to Denver (DEN) - 4.5 mi away @ 36950 ft, heading W at 496 mph. Spotted 17x before! [10:48:35 AM CDT] #A0AD3E #N14250 #B738 #UNITED #UAL2057 #UA2057 #ADSB #ADSBbot

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

🇺🇸 N37353 - Boeing 737MAX 8 - United Airlines UAL2057/UA2057 (DEN-PHX-EWR) - 4.1 mi away @ 34650 ft, heading ENE at 584 mph. Spotted once before! [08:44:23 PM CST] #A44213 #N37353 #B38M #UNITED #UAL2057 #UA2057 #ADSB #ADSBbot