Flight UAL521 UA521

United Airlines

Last contact 1 hour ago
KIAH
George Bush Intercontinental Airport
Houston
→
KBOS
Boston Logan International Airport
Boston
Altitude
—
Ground speed
—
Vertical rate
—
Track
—
Squawk
—
Source
—

Figures refresh every 15 seconds while the flight is airborne.

30-day history

Date Aircraft From To First contact Last On air Max altitude
31.10.2026 AAA58B KIAH Houston KBOS Boston 00:08 UTC 03:26 UTC 3 h 18 min 37 000 ft
30.10.2026 A60BCB KIAH Houston KBOS Boston 20:15 UTC 22:01 UTC 1 h 46 min 34 000 ft
29.10.2026 A441F5 KIAH Houston KBOS Boston 23:48 UTC 03:09 UTC 3 h 21 min 37 000 ft
29.10.2026 A62825 KIAH Houston KBOS Boston 20:08 UTC 22:04 UTC 1 h 57 min 34 000 ft
29.10.2026 AA73B9 KIAH Houston KBOS Boston 00:08 UTC 03:18 UTC 3 h 11 min 39 000 ft
28.10.2026 A52C4F KIAH Houston KBOS Boston 20:02 UTC 21:54 UTC 1 h 52 min 34 025 ft
28.10.2026 AA56B6 KIAH Houston KBOS Boston 00:56 UTC 03:54 UTC 2 h 57 min 37 000 ft
27.10.2026 A9D62E KIAH Houston KBOS Boston 02:53 UTC 05:56 UTC 3 h 4 min 35 000 ft
26.10.2026 ABB440 KIAH Houston KBOS Boston 20:42 UTC 22:29 UTC 1 h 46 min 34 000 ft
26.10.2026 N17335 KIAH Houston KBOS Boston 00:17 UTC 03:31 UTC 3 h 13 min 37 000 ft
25.10.2026 A55017 KIAH Houston KBOS Boston 19:57 UTC 22:05 UTC 2 h 8 min 30 025 ft
24.10.2026 A12AE6 KIAH Houston KBOS Boston 13:39 UTC 15:37 UTC 1 h 58 min 33 000 ft
24.10.2026 A5D668 KIAH Houston KBOS Boston 00:08 UTC 03:37 UTC 3 h 29 min 35 000 ft
23.10.2026 A12AE6 KIAH Houston KBOS Boston 00:27 UTC 03:54 UTC 3 h 26 min 35 000 ft
21.10.2026 A760CE KIAH Houston KBOS Boston 23:58 UTC 03:21 UTC 3 h 24 min 37 000 ft
21.10.2026 A2B83B KIAH Houston KBOS Boston 00:19 UTC 03:39 UTC 3 h 19 min 35 000 ft
20.10.2026 A5D623 KIAH Houston KBOS Boston 00:30 UTC 03:43 UTC 3 h 13 min 35 000 ft
19.10.2026 A75FBF KIAH Houston KBOS Boston 00:05 UTC 03:24 UTC 3 h 20 min 35 000 ft
17.10.2026 A4423A KIAH Houston KBOS Boston 13:57 UTC 15:58 UTC 2 h 0 min 37 000 ft
17.10.2026 N37555 KIAH Houston KBOS Boston 01:02 UTC 04:08 UTC 3 h 5 min 37 000 ft
15.10.2026 A12F6D KIAH Houston KBOS Boston 23:57 UTC 03:07 UTC 3 h 10 min 35 000 ft
15.10.2026 A7608E KIAH Houston KBOS Boston 00:14 UTC 03:19 UTC 3 h 5 min 35 000 ft
14.10.2026 N37535 KIAH Houston KBOS Boston 02:07 UTC 05:12 UTC 3 h 5 min 37 025 ft
13.10.2026 N47533 KIAH Houston KBOS Boston 00:32 UTC 03:44 UTC 3 h 11 min 31 000 ft
12.10.2026 A12AE3 KIAH Houston KBOS Boston 00:41 UTC 04:11 UTC 3 h 30 min 35 025 ft
10.10.2026 N17338 KIAH Houston KBOS Boston 13:42 UTC 15:45 UTC 2 h 3 min 35 000 ft
10.10.2026 A94B50 KIAH Houston KBOS Boston 01:29 UTC 04:36 UTC 3 h 7 min 35 025 ft
09.10.2026 A12B2E KIAH Houston KBOS Boston 01:33 UTC 04:34 UTC 3 h 1 min 35 000 ft
08.10.2026 A12AA4 KIAH Houston KBOS Boston 00:14 UTC 03:25 UTC 3 h 11 min 37 000 ft
07.10.2026 A2BBAC KIAH Houston KBOS Boston 00:07 UTC 03:18 UTC 3 h 10 min 37 000 ft
Related tools