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

🇺🇸 N34455 - Boeing 737NG 924ER/W - United Airlines UAL1288/UA1288, San Francisco (SFO) to Washington Dulles (IAD) - 4.7 mi away @ 36575 ft, heading ESE at 541 mph. Spotted 8x before! [05:29:04 AM CDT] #A3CF4F #N34455 #B739 #UNITED #UAL1288 #UA1288 #ADSB #ADSBbot

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

🇺🇸 N47360 - Boeing 737MAX 8 - United Airlines UAL1288/UA1288, San Francisco (SFO) to Baltimore/Washington Thurgood Marshall (BWI) - 4.8 mi away @ 39325 ft, heading E at 558 mph. Spotted 2x before! [02:47:53 AM CDT] #A5CF82 #N47360 #B38M #UNITED #UAL1288 #UA1288 #ADSB #ADSBbot