ICAO: A1BFB2
Owner: UNITEDAIRLINES
Flt: UAL1702 N21108 B752 BZN-SFO-BOS
Time: 2026-03-23 00:04:47 EDT
Min Alt: 9100 ft
Min Dist: 1.01 nm (33deg NNE)
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ICAO: A1BFB2
Owner: UNITEDAIRLINES
Flt: UAL1665 N21108 B752 ATL-SFO-BOS
Time: 2026-03-22 07:21:48 EDT
Min Alt: 8125 ft
Min Dist: 1.01 nm (33deg NNE)
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ICAO: A1BFB2
Owner: UNITEDAIRLINES
Flt: UAL2400 N21108 B752 BOS-SFO-LAS
Time: 2026-03-21 18:09:32 EDT
Min Alt: 4975 ft
Min Dist: 0.79 nm (108deg ESE)
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ICAO: A1BFB2
Owner: UNITEDAIRLINES
Flt: UAL2400 N21108 B752 BOS-SFO-LAS
Time: 2026-03-21 18:08:57 EDT
Min Alt: 3625 ft
Min Dist: 0.01 mi (130deg SE)
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ICAO: A1BFB2
Owner: UNITEDAIRLINES
Flt: UAL1783 N21108 B752 LAX-BOS
Time: 2026-03-21 16:16:30 EDT
Min Alt: 9275 ft
Min Dist: 0.99 nm (18deg NNE)
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ICAO: A1BFB2
Owner: UNITEDAIRLINES
Flt: UAL36 N21108 B752 EWR-EDI
Time: 2026-03-18 22:14:27 EDT
Min Alt: 31000 ft
Min Dist: 2.4 nm (-64deg WNW)
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ICAO: A1BFB2
Owner: UNITEDAIRLINES
Flt: UAL2656 N21108 B752 SNA-DEN-BOS
Time: 2026-03-13 05:07:45 EDT
Min Alt: 9300 ft
Min Dist: 1.1 nm (-13deg NNW)
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ICAO: A1BFB2
Owner: UNITEDAIRLINES
Flt: UAL2441 N21108 B752 BOS-SFO
Time: 2026-03-01 06:31:24 EST
Min Alt: 12700 ft
Min Dist: 1.21 nm (86deg E)
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ICAO: A1BFB2
Owner: UNITEDAIRLINES
Flt: UAL2210 N21108 B752 LAX-BOS
Time: 2026-02-10 06:42:09 EST
Min Alt: 9175 ft
Min Dist: 1.25 nm (-28deg NNW)
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ICAO: A1BFB2
Owner: UNITEDAIRLINES
Flt: UAL36 N21108 B752 EWR-EDI
Time: 2026-02-06 23:46:15 EST
Min Alt: 35000 ft
Min Dist: 1.01 nm (119deg ESE)
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL1008 N21108 B752 BOS-SFO-SEA
Time: 2026-01-23 08:05:11 EST
Min Alt: 13900 ft
Min Dist: 1.3 nm (109° ESE)
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL2256 N21108 B752 SFO-BOS
Time: 2026-01-22 18:57:55 EST
Min Alt: 8900 ft
Min Dist: 0.99 nm (24° NNE)
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL36 N21108 B752 EWR-EDI
Time: 2026-01-19 00:08:13 EST
Min Alt: 31000 ft
Min Dist: 1.3 nm (-51° NW)
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL2210 N21108 B752 LAX-BOS
Time: 2026-01-17 06:40:59 EST
Min Alt: 8875 ft
Min Dist: 1 nm (21° NNE)
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL311 N21108 B752 BOS-LAX
Time: 2026-01-16 08:55:38 EST
Min Alt: 14025 ft
Min Dist: 1.2 nm (101° E)
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL2210 N21108 B752 LAX-BOS
Time: 2026-01-16 06:58:57 EST
Min Alt: 9600 ft
Min Dist: 1 nm (26° NNE)
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL2183 N21108 B752 ORD-BOS
Time: 2026-01-09 12:04:29 EST
Min Alt: 9100 ft
Min Dist: 4.9 nm (-30° NNW)
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL1708 N21108 B752 SFO-BOS
Time: 2026-01-09 00:08:16 EST
Min Alt: 7850 ft
Min Dist: 1.01 nm (21° NNE)
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL2279 N21108 B752 BOS-SFO-SEA
Time: 2026-01-08 11:05:58 EST
Min Alt: 12875 ft
Min Dist: 1.8 nm (73° ENE)
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL2647 N21108 B752 LAX-SFO-BOS
Time: 2026-01-07 16:35:12 EST
Min Alt: 8725 ft
Min Dist: 1 nm (23° NNE)
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Planefence ICAO: A1BFB2
Flt: UAL1074 UNITEDAIRLINES MCO - EWR
First seen: 2025-12-08 13:48:23 EST
Min Alt: 2900 ft MSL
Min Dist: 0.25 mi
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL1665 N21108 B752 MSY-SFO-BOS
Time: 2025-12-08 06:50:25 EST
Min Alt: 8900 ft
Min Dist: 1.01 nm (28° NNE)
Loudness: 2 dB
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL1008 N21108 B752 BOS-SFO-SEA
Time: 2025-11-27 08:22:10 EST
Min Alt: 13925 ft
Min Dist: 1.2 nm (73° ENE)
Loudness: -1 dB
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL2004 N21108 B752 SFO-BOS
Time: 2025-11-27 00:10:48 EST
Min Alt: 9300 ft
Min Dist: 8.6 nm (-20° NNW)
Loudness: 0 dB
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL1665 N21108 B752 MSY-SFO-BOS
Time: 2025-11-26 07:33:14 EST
Min Alt: 8875 ft
Min Dist: 4.96 nm (-10° N)
Loudness: 0 dB
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ICAO: A1BFB2
Owner: UNITED AIRLINES
Flt: UAL1783 N21108 B752 LAX-BOS
Time: 2025-11-25 16:13:25 EST
Min Alt: 8125 ft
Min Dist: 4.9 nm (-3° N)
Loudness: -1 dB
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Planefence ICAO: A1BFB2
Flt: UAL2279 UNITEDAIRLINES EWR - MSY
First seen: 2025-11-06 11:27:17 EST
Min Alt: 3300 ft MSL
Min Dist: 0.26 mi
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Map of the St. Louis area showing the position and track of the aircraft described in the post.
🇺🇸 N21108 - Boeing 757 224/W - United Airlines UAL1215/UA1215, Newark Liberty (EWR) to Los Angeles (LAX) - 23.2 mi away @ 37600 ft, heading W at 499 mph. Spotted 3x before! [10:43:02 AM CDT] #A1BFB2 #N21108 #B752 #UNITED #UAL1215 #UA1215 #ADSB #ADSBbot
Map of the St. Louis area showing the position and track of the aircraft described in the post.
🇺🇸 N21108 - Boeing 757 224/W - United Airlines UAL1981/UA1981 (IAD-LAX-EWR) - 4.3 mi away @ 36700 ft, heading ENE at 560 mph. Spotted 2x before! [04:41:37 PM CDT] #A1BFB2 #N21108 #B752 #UNITED #UAL1981 #UA1981 #ADSB #ADSBbot
