Flight UAL421 UA421

United Airlines

Last contact 18 minutes ago
KDEN
Denver International Airport
Denver
→
KORD
Chicago O'Hare International Airport
Chicago
Altitude
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Ground speed
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Vertical rate
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Track
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Squawk
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Source
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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 A494E9 KDEN Denver KORD Chicago 02:46 UTC 04:55 UTC 2 h 9 min 34 000 ft
30.10.2026 N14512 KDEN Denver KORD Chicago 22:02 UTC 01:04 UTC 3 h 2 min 37 025 ft
30.10.2026 A44916 KDEN Denver KORD Chicago 04:26 UTC 06:13 UTC 1 h 47 min 32 000 ft
30.10.2026 A44916 KDEN Denver KORD Chicago 02:56 UTC 03:08 UTC 0 h 12 min 0 ft
29.10.2026 A0B7B8 KDEN Denver KORD Chicago 22:04 UTC 01:14 UTC 3 h 10 min 35 025 ft
29.10.2026 N17279 KDEN Denver KORD Chicago 02:47 UTC 04:38 UTC 1 h 50 min 38 000 ft
28.10.2026 A0B88D KDEN Denver KORD Chicago 22:02 UTC 01:17 UTC 3 h 15 min 35 000 ft
28.10.2026 A5CF82 KDEN Denver KORD Chicago 02:53 UTC 04:37 UTC 1 h 45 min 36 000 ft
27.10.2026 A0B7DC KDEN Denver KORD Chicago 23:02 UTC 02:07 UTC 3 h 4 min 35 025 ft
27.10.2026 A0B889 KDEN Denver KORD Chicago 03:15 UTC 05:03 UTC 1 h 48 min 36 000 ft
26.10.2026 A0B8AF KDEN Denver KORD Chicago 22:02 UTC 01:21 UTC 3 h 18 min 36 000 ft
26.10.2026 N37560 KDEN Denver KORD Chicago 02:53 UTC 04:36 UTC 1 h 43 min 34 000 ft
25.10.2026 A87B36 KDEN Denver KORD Chicago 22:04 UTC 01:23 UTC 3 h 18 min 35 050 ft
25.10.2026 A4455E KDEN Denver KORD Chicago 02:25 UTC 04:21 UTC 1 h 56 min 34 000 ft
24.10.2026 A0B7DF KDEN Denver KORD Chicago 21:37 UTC 00:55 UTC 3 h 18 min 35 050 ft
24.10.2026 A0B801 KDEN Denver KORD Chicago 02:54 UTC 04:51 UTC 1 h 56 min 36 050 ft
23.10.2026 A9249C KDEN Denver KORD Chicago 21:57 UTC 01:06 UTC 3 h 9 min 35 000 ft
22.10.2026 N24519 KDEN Denver KORD Chicago 22:28 UTC 02:21 UTC 3 h 53 min 35 050 ft
22.10.2026 A12F6F KDEN Denver KORD Chicago 19:40 UTC 20:10 UTC 0 h 30 min 28 050 ft
22.10.2026 A12F6F KDEN Denver KORD Chicago 18:47 UTC 19:21 UTC 0 h 34 min 35 000 ft
22.10.2026 A12F6F KDEN Denver KORD Chicago 17:39 UTC 18:28 UTC 0 h 49 min 35 000 ft
22.10.2026 A0B867 KDEN Denver KORD Chicago 02:12 UTC 04:29 UTC 2 h 17 min 38 025 ft
21.10.2026 A2450B KDEN Denver KORD Chicago 21:42 UTC 00:59 UTC 3 h 17 min 35 025 ft
21.10.2026 A0B7BD KDEN Denver KORD Chicago 02:27 UTC 04:52 UTC 2 h 25 min 34 025 ft
20.10.2026 A0B867 KDEN Denver KORD Chicago 21:41 UTC 01:00 UTC 3 h 19 min 35 000 ft
20.10.2026 A2452C KDEN Denver KORD Chicago 02:32 UTC 04:11 UTC 1 h 39 min 33 975 ft
19.10.2026 A0B88F KDEN Denver KORD Chicago 21:42 UTC 01:13 UTC 3 h 31 min 35 050 ft
19.10.2026 A24526 KDEN Denver KORD Chicago 02:29 UTC 04:41 UTC 2 h 13 min 34 025 ft
18.10.2026 A0B841 KDEN Denver KORD Chicago 21:40 UTC 01:07 UTC 3 h 27 min 33 050 ft
18.10.2026 A46D26 KDEN Denver KORD Chicago 17:38 UTC 19:56 UTC 2 h 18 min 33 000 ft
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