Flight
UAL1521
Flight history and live tracking for UAL1521, operated by United Airlines. Recent flights from the PlaneTrack independent receiver network, with departure and arrival times, aircraft used, and a real-time position feed.
Next flight
| Date | Sun 23 Aug 2026 |
| Route | KDSM DES MOINES INTERNATIONAL → KDEN DENVER INTERNATIONAL |
| Scheduled departure | 09:13 CDT |
Scheduled and estimated times from the FAA SWIM feed, local to each airport.
Route
| Airline | United Airlines |
| Typical origin | KDSM DES MOINES INTERNATIONAL |
| Typical destination | KDEN DENVER INTERNATIONAL |
| Distance | 511 nm |
Flight history 120 flights since Sep 2025
| Date | From | To | Dep | Arr | Duration | Aircraft |
|---|---|---|---|---|---|---|
| 2026-08-21 | KDSM DES MOINES INTERNATIONAL | KDEN DENVER INTERNATIONAL | 09:39 CDT | 10:16 MDT | 1h 37m | N845UA |
| 2026-08-20estimated | ? | ? | 14:51Z | 16:24Z | 1h 32m | N825UA |
| 2026-08-19estimated | ? | ? | 14:46Z | 17:28Z | 2h 41m | N845UA |
| 2026-08-17estimated | ? | ? | 14:39Z | 16:18Z | 1h 39m | N889UA |
| 2026-08-16estimated | ? | ? | 14:58Z | 16:52Z | 1h 53m | N829UA |
| 2026-08-15estimated | ? | ? | 16:42Z | 18:12Z | 1h 29m | N825UA |
| 2026-08-14estimated | ? | ? | 14:42Z | 16:10Z | 1h 27m | N835UA |
| 2026-08-13estimated | ? | ? | 15:19Z | 17:36Z | 2h 17m | N819UA |
| 2026-08-12estimated | ? | ? | 14:25Z | 15:54Z | 1h 29m | N877UA |
Earlier flights (111) - back to 2025-09-18
| Date | From | To | Dep | Arr | Duration | Aircraft |
|---|---|---|---|---|---|---|
| 2026-07-23estimated | ? | ? | 16:05Z | 17:46Z | 1h 40m | N881UA |
| 2026-07-22estimated | ? | ? | 14:24Z | 15:58Z | 1h 33m | N841UA |
| 2026-07-21estimated | ? | ? | 14:51Z | 16:20Z | 1h 28m | N803UA |
| 2026-07-20estimated | ? | ? | 14:25Z | 15:54Z | 1h 28m | N894UA |
| 2026-07-19estimated | ? | ? | 14:38Z | 17:10Z | 2h 32m | N803UA |
| 2026-07-18estimated | ? | ? | 14:35Z | 17:11Z | 2h 35m | N828UA |
| 2026-07-17estimated | ? | ? | 14:43Z | 16:04Z | 1h 20m | N817UA |
| 2026-07-16estimated | ? | ? | 14:44Z | 16:14Z | 1h 29m | N852UA |
| 2026-07-15estimated | ? | ? | 14:48Z | 16:06Z | 1h 18m | N806UA |
| 2026-07-14 | KDSM | KDEN | 09:38 CDT | 10:08 MDT | 1h 29m | N846UA |
| 2026-07-13estimated | KDSM | KDEN | 09:25 CDT | 10:16 MDT | 1h 50m | N892UA |
| 2026-07-12estimated | KDSM | KDEN | 09:46 CDT | 10:10 MDT | 1h 23m | N895UA |
| 2026-07-11 | KDSM | KDEN | 09:41 CDT | 10:16 MDT | 1h 34m | N895UA |
| 2026-07-10estimated | KDSM | KDEN | 09:27 CDT | 12:26 MDT | 3h 58m | N896UA |
| 2026-07-09estimated | KDSM | KDEN | 09:42 CDT | 10:20 MDT | 1h 38m | N895UA |
| 2026-07-08estimated | KDSM | KDEN | 09:34 CDT | 10:10 MDT | 1h 35m | N840UA |
| 2026-07-07estimated | KDSM | KDEN | 09:46 CDT | 10:12 MDT | 1h 26m | N891UA |
| 2026-07-06 | KDSM | KDEN | 09:36 CDT | 10:14 MDT | 1h 37m | N883UA |
| 2026-07-05estimated | KDSM | KDEN | 09:40 CDT | 10:14 MDT | 1h 33m | N844UA |
| 2026-07-04 | KDSM | KDEN | 09:30 CDT | 10:02 MDT | 1h 31m | N896UA |
| 2026-07-03estimated | KDSM | KDEN | 09:54 CDT | 11:49 MDT | 2h 55m | N817UA |
| 2026-07-02estimated | KDSM | KDEN | 14:48 CDT | 17:21 MDT | 3h 32m | N884UA |
| 2026-07-01 | KDSM | KDEN | 09:29 CDT | 10:20 MDT | 1h 50m | N855UA |
| 2026-06-30estimated | KDSM | KDEN | 12:35 CDT | 13:06 MDT | 1h 31m | N894UA |
| 2026-06-29estimated | KDSM | KDEN | 09:44 CDT | 10:22 MDT | 1h 37m | N819UA |
| 2026-06-28estimated | KDSM | KDEN | 10:21 CDT | 10:52 MDT | 1h 30m | N803UA |
| 2026-06-27estimated | KDSM | KDEN | 09:54 CDT | 10:34 MDT | 1h 39m | N846UA |
| 2026-06-26estimated | KDSM | KDEN | 09:54 CDT | 11:28 MDT | 2h 33m | N803UA |
| 2026-06-25estimated | KDSM | KDEN | 09:40 CDT | 10:34 MDT | 1h 53m | N813UA |
| 2026-06-24estimated | KDSM | ? | 09:30 CDT | 17:31Z | 3h 00m | N844UA |
| 2026-06-23estimated | KDSM | KDEN | 09:25 CDT | 10:04 MDT | 1h 38m | N898UA |
| 2026-06-22estimated | KDSM | KDEN | 09:23 CDT | 10:12 MDT | 1h 48m | N853UA |
| 2026-06-21estimated | KDSM | KDEN | 09:23 CDT | 10:02 MDT | 1h 38m | N846UA |
| 2026-06-20estimated | KDSM | KDEN | 09:23 CDT | 10:02 MDT | 1h 38m | N894UA |
| 2026-06-19estimated | KDSM | KDEN | 09:25 CDT | 10:02 MDT | 1h 36m | N893UA |
| 2026-06-18partial | KDEN | ? | 09:38 MDT | N820UA | ||
| 2026-06-17 | KDSM | KDEN | 09:25 CDT | 11:23 MDT | 2h 57m | N874UA |
| 2026-06-16 | KBKF | KDEN | 08:53 MDT | 11:28 MDT | 2h 35m | N823UA |
| 2026-06-15estimated | KDSM | KDEN | 09:22 CDT | 11:37 MDT | 3h 15m | N480UA |
| 2026-06-14estimated | KDSM | KDEN | 09:53 CDT | 10:36 MDT | 1h 43m | N847UA |
| 2026-06-13 | KDSM | KDEN | 09:18 CDT | 11:44 MDT | 3h 25m | N852UA |
| 2026-06-12estimated | KDSM | KDEN | 09:25 CDT | 11:48 MDT | 3h 22m | N804UA |
| 2026-05-29 | KDSM | KDEN | 09:25 CDT | 09:48 MDT | 1h 22m | N883UA |
| 2026-05-28 | KDSM | KDEN | 09:25 CDT | 11:27 MDT | 3h 02m | N846UA |
| 2026-05-27estimated | KDSM | KDEN | 09:58 CDT | 11:33 MDT | 2h 35m | N487UA |
| 2026-05-26 | KDSM | KDEN | 09:53 CDT | 10:22 MDT | 1h 28m | N462UA |
| 2026-05-25estimated | KDSM | KDEN | 09:38 CDT | 10:12 MDT | 1h 33m | N844UA |
| 2026-05-24estimated | KDSM | KDEN | 09:55 CDT | 11:22 MDT | 2h 26m | N459UA |
| 2026-05-23estimated | KDSM | KDEN | 09:53 CDT | 11:32 MDT | 2h 38m | N821UA |
| 2026-05-22estimated | ? | ? | 14:42Z | 16:16Z | 1h 33m | N875UA |
| 2026-05-21 | KDSM | KDEN | 09:41 CDT | 10:26 MDT | 1h 45m | N833UA |
| 2026-05-20partial | KPBI | ? | 21:35 EDT | N63899 | ||
| 2026-05-19partial | KPBI | ? | 21:22 EDT | A12AC7 | ||
| 2026-05-12partial | KORD | ? | 20:50 CDT | A12AC7 | ||
| 2026-05-11 | KPBI | KORD | 16:33 EDT | 18:22 CDT | 2h 48m | A12AC7 |
| 2026-05-10 | KPBI | KORD | 16:38 EDT | 18:16 CDT | 2h 37m | N75433 |
| 2026-05-09 | KPBI | KORD | 16:31 EDT | 18:16 CDT | 2h 44m | N437UA |
| 2026-05-08partial | KUGN | ? | 19:00 CDT | N37468 | ||
| 2026-05-07estimated | KPBI | KMDW | 17:16 EDT | 18:58 CDT | 2h 41m | N37468 |
| 2026-05-06 | KPBI | KORD | 16:43 EDT | 18:36 CDT | 2h 52m | N37528 |
| 2026-05-05partial | KMDW | ? | 19:00 CDT | N68802 | ||
| 2026-05-04estimated | KPBI | KCVG | 17:27 EDT | 19:58 EDT | 2h 31m | N68802 |
| 2026-05-03partial | KORD | ? | 20:25 CDT | N491UA | ||
| 2026-05-02partial | KORD | ? | 20:59 CDT | N78524 | ||
| 2026-05-01 | KPBI | KORD | 16:36 EDT | 18:24 CDT | 2h 47m | N78524 |
| 2026-04-29 | KDEN | KCLE | 10:08 MDT | 14:48 EDT | 2h 40m | N62849 |
| 2026-04-28 | KDEN | KCLE | 10:13 MDT | 14:36 EDT | 2h 22m | N66825 |
| 2026-04-27 | KDEN | KCLE | 10:05 MDT | 15:00 EDT | 2h 54m | N39461 |
| 2026-04-26 | KDEN | KCLE | 10:23 MDT | 15:02 EDT | 2h 38m | N69829 |
| 2026-04-25 | KDEN | KCLE | 10:11 MDT | 14:48 EDT | 2h 37m | N843UA |
| 2026-04-24 | KDEN | KCLE | 10:05 MDT | 17:17 EDT | 5h 11m | N37468 |
| 2026-04-23 | KDEN | KCLE | 10:12 MDT | 16:47 EDT | 4h 35m | N64844 |
| 2026-04-22 | KDEN | KCLE | 10:12 MDT | 15:10 EDT | 2h 58m | N38443 |
| 2026-04-21 | ? | KCLE | 16:12Z | 16:44 EDT | 4h 32m | N37470 |
| 2026-04-20 | KDEN | KCLE | 10:11 MDT | 15:02 EDT | 2h 50m | N73445 |
| 2026-04-19 | KDEN | KCLE | 10:03 MDT | 14:44 EDT | 2h 40m | N28478 |
| 2026-04-18 | KDEN | KCLE | 10:02 MDT | 16:47 EDT | 4h 44m | N881UA |
| 2026-04-17 | KDEN | KCLE | 10:12 MDT | 14:40 EDT | 2h 28m | N63890 |
| 2026-04-16 | ? | KCLE | 16:04Z | 14:48 EDT | 2h 43m | N37470 |
| 2026-04-15 | KDEN | KCLE | 09:56 MDT | 14:52 EDT | 2h 56m | N37437 |
| 2026-04-14 | KDEN | KCLE | 10:06 MDT | 14:40 EDT | 2h 33m | N69813 |
| 2026-04-12partial | KDEN | ? | 10:15 MDT | N75433 | ||
| 2026-04-11partial | KDEN | ? | 10:18 MDT | N873UA | ||
| 2026-04-06partial | KDEN | ? | 09:52 MDT | N75435 | ||
| 2026-04-05 | KDEN | KCLE | 09:59 MDT | 16:42 EDT | 4h 42m | N62895 |
| 2026-04-04partial | KDEN | ? | 09:14 MDT | N839UA | ||
| 2026-04-03 | KDEN | KCLE | 10:07 MDT | 16:45 EDT | 4h 37m | N69806 |
| 2026-04-02 | KDEN | KCLE | 10:09 MDT | 15:00 EDT | 2h 50m | N37456 |
| 2026-03-31 | KDEN | KCLE | 10:33 MDT | 16:46 EDT | 4h 12m | A12AA4 |
| 2026-03-30 | KDEN | KCLE | 10:46 MDT | 15:18 EDT | 2h 31m | N75435 |
| 2026-03-29 | KDEN | KCLE | 10:01 MDT | 14:54 EDT | 2h 52m | AA7EC2 |
| 2026-03-28estimated | KDSM | KDEN | 08:43 CDT | 09:44 MDT | 2h 00m | N832UA |
| 2026-03-16 | KDAY | KDEN | 09:26 EDT | 10:06 MDT | 2h 40m | N813UA |
| 2026-03-15 | KDAY | ? | 08:36 EDT | 17:18Z | 4h 41m | N806UA |
| 2026-03-14 | KDAY | KDEN | 08:54 EDT | 11:24 MDT | 4h 30m | N875UA |
| 2026-03-13estimated | KDSM | KDEN | 07:40 CDT | 09:46 MDT | 3h 05m | N875UA |
| 2025-10-02 | KDEN Denver International | ? | 10:27 MDT | 17:33Z | 1h 05m | A837A3 |
| 2025-10-01 | KDEN Denver International | KCLE | 10:20 MDT | 14:44 EDT | 2h 24m | A583F5 |
| 2025-09-30 | KDEN Denver International | KCLE | 10:29 MDT | 14:50 EDT | 2h 20m | A43EA2 |
| 2025-09-29 | KDEN Denver International | KCLE | 10:14 MDT | 14:38 EDT | 2h 23m | A8FC73 |
| 2025-09-28 | KDEN Denver International | KCLE | 10:30 MDT | 14:55 EDT | 2h 24m | A94B05 |
| 2025-09-27 | KDEN Denver International | KCLE | 10:24 MDT | 14:52 EDT | 2h 28m | A2B8C5 |
| 2025-09-26 | KDEN Denver International | KCLE | 10:34 MDT | 14:58 EDT | 2h 23m | A41E29 |
| 2025-09-25 | KDEN Denver International | ? | 10:42 MDT | 17:43Z | 1h 01m | A46CC1 |
| 2025-09-24 | KDEN Denver International | ? | 10:30 MDT | 17:33Z | 1h 03m | A94B2B |
| 2025-09-23 | KDEN Denver International | KCLE | 10:47 MDT | 15:10 EDT | 2h 23m | A3CF6D |
| 2025-09-22 | KDEN Denver International | KCLE | 10:40 MDT | 14:58 EDT | 2h 18m | A445EE |
| 2025-09-21 | KDEN Denver International | KCLE | 10:49 MDT | 15:09 EDT | 2h 19m | A94B4D |
| 2025-09-20 | KDEN Denver International | KCLE | 10:30 MDT | 14:55 EDT | 2h 24m | AA7ABE |
| 2025-09-19 | KDEN Denver International | KCLE | 10:32 MDT | 14:54 EDT | 2h 22m | A46D4F |
| 2025-09-18 | KDEN Denver International | KCLE | 11:08 MDT | 15:46 EDT | 2h 38m | A9DCE9 |
Times are local to each airport. Hover for UTC. Flights marked estimated were completed with route prediction or partial coverage; partial records have a confirmed departure but no reliable arrival fix.
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Data access
Live positions and 365-day history for this flight are available through the PlaneTrack API (commercial use from $29/month) and as one-off CSV extracts from our own receiver network archive. Questions: [email protected]