ICAO: #A12AC0
Owner: #UNITEDAIRLINES
Flt: #UAL3877 #N17420 #B39M
Time: 2026-09-15 00:01:19 CDT
Min Alt: 2575 ft
Min Dist: 11.6 nm (137deg SE)
Squawk: #1714
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ICAO: #A12A7B
Owner: #UNITEDAIRLINES
Flt: #UAL3877 #N17401 #B39M
Time: 2026-09-09 09:13:01 CDT
Min Alt: 1575 ft
Min Dist: 11.19 nm (135deg SE)
Squawk: #2106
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ICAO: #A46D4F
Owner: #UNITEDAIRLINES
Flt: #UAL3877 #N38459 #B739 #SFO-#IAD
Time: 2026-08-07 10:32:30 CDT
Min Alt: 2825 ft
Min Dist: 8.8 nm (94deg E)
Squawk: #4033
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ICAO: #A43E5C
Owner: #UNITEDAIRLINES
Flt: #UAL3877 #N37253 #B738 #XMN-#ORD
Time: 2026-06-17 00:43:14 CDT
Min Alt: 6125 ft
Min Dist: 8.8 nm (-1deg N)
Squawk: #1424
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ICAO: #A46D4F
Owner: #UNITEDAIRLINES
Flt: #UAL3877 #N38459 #B739 #XMN-#ORD
Time: 2026-05-14 22:13:00 CDT
Min Alt: 4225 ft
Min Dist: 5.54 nm (47deg NE)
Squawk: #1473
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🇺🇸 N12221 - Boeing 737NG 824/W - United Airlines UAL3877/UA3877, Chicago/Rockford (RFD) to George Bush Intcntl/Houston (IAH) - 5.0 mi away @ 41700 ft, heading SSW at 530 mph. Spotted 21x before. [09:04:09 AM CDT] #A05DD8 #N12221 #B738 #UNITED #UAL3877 #UA3877 #ADSB #ADSBbot

🇺🇸 N26232 - Boeing 737NG 824/W - United Airlines UAL3877/UA3877, Chicago/Rockford (RFD) to George Bush Intcntl/Houston (IAH) - 15.7 mi away @ 42250 ft, heading SSW at 485 mph. Spotted 19x before. [06:19:31 PM CDT] #A28947 #N26232 #B738 #UNITED #UAL3877 #UA3877 #ADSB #ADSBbot

🇺🇸 N29717 - Boeing 737NG 724/W - United Airlines UAL3877/UA3877, Chicago/Rockford (RFD) to George Bush Intcntl/Houston (IAH) - 22.0 mi away @ 39750 ft, heading SSW at 493 mph. Spotted 37x before! [10:47:14 AM CST] #A31216 #N29717 #B737 #UNITED #UAL3877 #UA3877 #ADSB #ADSBbot