Flight
UAL1639
Flight history and live tracking for UAL1639, 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 | KDEN DENVER INTERNATIONAL → KSTL LAMBERT ST LOUIS INTERNATIONAL |
| Scheduled departure | 13:27 MDT |
Scheduled and estimated times from the FAA SWIM feed, local to each airport.
Route
| Airline | United Airlines |
| Observed route | KDEN → KORD |
Flight history 119 flights since Sep 2025
| Date | From | To | Dep | Arr | Duration | Aircraft |
|---|---|---|---|---|---|---|
| 2026-08-22 | KDEN DENVER INTERNATIONAL | KSTL LAMBERT ST LOUIS INTERNATIONAL | 13:39 MDT | 16:14 CDT | 1h 35m | N460UA |
| 2026-08-21 | KDEN DENVER INTERNATIONAL | KSTL LAMBERT ST LOUIS INTERNATIONAL | 13:43 MDT | 16:19 CDT | 1h 36m | N438UA |
| 2026-08-20 | KDEN DENVER INTERNATIONAL | KSTL LAMBERT ST LOUIS INTERNATIONAL | 15:22 MDT | 17:58 CDT | 1h 36m | N458UA |
| 2026-08-19estimated | ? | ? | 20:27Z | 23:08Z | 2h 41m | N477UA |
| 2026-08-18estimated | ? | ? | 21:27Z | 21:46Z | 0h 18m | N493UA |
| 2026-08-17estimated | ? | ? | 19:33Z | 22:36Z | 3h 02m | N445UA |
| 2026-08-16partial | ? | ? | 00:00Z | N497UA | ||
| 2026-08-15estimated | ? | ? | 22:07Z | 23:58Z | 1h 50m | N497UA |
| 2026-08-14estimated | ? | ? | 19:30Z | 22:22Z | 2h 52m | N475UA |
| 2026-08-13partial | ? | ? | 01:21Z | N437UA | ||
| 2026-08-12estimated | ? | ? | 21:24Z | 23:34Z | 2h 09m | N437UA |
| 2026-08-11estimated | ? | ? | 19:23Z | 21:34Z | 2h 10m | N457UA |
Earlier flights (107) - back to 2025-09-19
| Date | From | To | Dep | Arr | Duration | Aircraft |
|---|---|---|---|---|---|---|
| 2026-07-23estimated | ? | ? | 19:30Z | 21:22Z | 1h 51m | N894UA |
| 2026-07-22partial | KORD | ? | 19:00 CDT | N837UA | ||
| 2026-07-21partial | ? | ? | 00:00Z | N806UA | ||
| 2026-07-20partial | ? | ? | 00:00Z | N494UA | ||
| 2026-07-19partial | ? | ? | 02:45Z | N840UA | ||
| 2026-07-18partial | ? | ? | 00:00Z | N815UA | ||
| 2026-07-17partial | KORD | ? | 19:00 CDT | N822UA | ||
| 2026-07-16partial | KORD | ? | 21:38 CDT | N443UA | ||
| 2026-07-15partial | KORD | ? | 22:07 CDT | N872UA | ||
| 2026-07-14partial | KORD | ? | 07:33 CDT | N844UA | ||
| 2026-07-13partial | KSTL | ? | 19:32 CDT | N448UA | ||
| 2026-07-12partial | KORD | ? | 21:28 CDT | N847UA | ||
| 2026-07-11partial | KORD | ? | 19:00 CDT | N854UA | ||
| 2026-07-10partial | KORD | ? | 19:00 CDT | N884UA | ||
| 2026-07-09partial | KMDW | ? | 19:00 CDT | N850UA | ||
| 2026-07-08estimated | KDEN | KMDW | 13:21 MDT | 18:58 CDT | 4h 36m | N850UA |
| 2026-07-07partial | KDPA | ? | 19:00 CDT | N459UA | ||
| 2026-07-06 | KDEN | KDPA | 13:33 MDT | 18:58 CDT | 4h 24m | N459UA |
| 2026-07-05partial | KSTL | ? | 21:05 CDT | A0B81E | ||
| 2026-07-03 | KDEN | KSTL | 13:19 MDT | 17:28 CDT | 3h 08m | N806UA |
| 2026-07-02partial | KORD | ? | 21:32 CDT | N848UA | ||
| 2026-07-01 | KDEN | KORD | 13:19 MDT | 18:58 CDT | 4h 38m | N848UA |
| 2026-06-30 | KDEN | KORD | 15:34 MDT | 18:44 CDT | 2h 09m | N855UA |
| 2026-06-29partial | KORD | ? | 19:00 CDT | N828UA | ||
| 2026-06-28 | KDEN | KDPA | 13:24 MDT | 18:58 CDT | 4h 33m | N828UA |
| 2026-06-27 | KDEN | KORD | 13:23 MDT | 18:52 CDT | 4h 28m | N847UA |
| 2026-06-26 | KDEN | KORD | 13:24 MDT | 18:32 CDT | 4h 07m | N883UA |
| 2026-06-25partial | KSTL | ? | 20:47 CDT | N809UA | ||
| 2026-06-24estimated | KDEN | KSTL | 13:47 MDT | 16:44 CDT | 1h 56m | N809UA |
| 2026-06-23 | KDEN | KORD | 13:40 MDT | 18:26 CDT | 3h 46m | N816UA |
| 2026-06-22partial | KPUB | ? | 18:00 MDT | N472UA | ||
| 2026-06-21partial | KDEN | ? | 16:23 MDT | N472UA | ||
| 2026-06-20 | KDEN | KORD | 13:30 MDT | 18:20 CDT | 3h 49m | N835UA |
| 2026-06-19 | KDEN | KORD | 13:25 MDT | 18:32 CDT | 4h 06m | N806UA |
| 2026-06-18partial | KSTL | ? | 19:35 CDT | N829UA | ||
| 2026-06-17 | KDEN | KSTL | 13:23 MDT | 16:18 CDT | 1h 54m | N829UA |
| 2026-06-16partial | KORD | ? | 21:06 CDT | N893UA | ||
| 2026-06-15partial | KORD | ? | 20:37 CDT | N898UA | ||
| 2026-06-14partial | KORD | ? | 21:12 CDT | N817UA | ||
| 2026-06-13partial | KORD | ? | 09:20 CDT | N809UA | ||
| 2026-06-12 | KSTL | KORD | 10:23 CDT | 18:52 CDT | 8h 28m | N890UA |
| 2026-05-29partial | KORD | ? | 19:00 CDT | N816UA | ||
| 2026-05-28 | KDEN | KSTL | 14:42 MDT | 18:58 CDT | 3h 15m | N816UA |
| 2026-05-27 | KDEN | KORD | 13:44 MDT | 18:24 CDT | 3h 39m | N841UA |
| 2026-05-26 | KDEN | KORD | 13:30 MDT | 18:26 CDT | 3h 55m | N824UA |
| 2026-05-25partial | KDPA | ? | 19:00 CDT | N822UA | ||
| 2026-05-24 | KDEN | KDPA | 14:22 MDT | 18:58 CDT | 3h 35m | N822UA |
| 2026-05-23 | KDEN | KORD | 13:28 MDT | 18:22 CDT | 3h 53m | N874UA |
| 2026-05-22partial | KORD | ? | 20:56 CDT | N830UA | ||
| 2026-05-21 | KDEN | KORD | 13:25 MDT | 18:40 CDT | 4h 14m | N830UA |
| 2026-05-20partial | KNUQ | ? | 17:40 PDT | N481UA | ||
| 2026-05-19partial | KSFO | ? | 20:07 PDT | N488UA | ||
| 2026-05-12estimated | KVBG | KAUS | 06:23 PDT | 16:26 CDT | 8h 02m | N497UA |
| 2026-05-11estimated | KVBG | KAUS | 06:29 PDT | 17:06 CDT | 8h 36m | N883UA |
| 2026-05-10estimated | KNUQ | KAUS | 06:21 PDT | 17:04 CDT | 8h 43m | N475UA |
| 2026-05-09estimated | KVBG | KAUS | 06:45 PDT | 17:39 CDT | 8h 53m | N496UA |
| 2026-05-08estimated | KSJC | KAUS | 06:46 PDT | 18:46 CDT | 10h 00m | N460UA |
| 2026-05-07estimated | KNUQ | KAUS | 06:41 PDT | 16:52 CDT | 8h 10m | N455UA |
| 2026-05-06estimated | KNUQ | KAUS | 06:22 PDT | 16:28 CDT | 8h 05m | N440UA |
| 2026-05-05estimated | KSJC | KAUS | 06:13 PDT | 16:30 CDT | 8h 16m | N437UA |
| 2026-05-04 | KSJC | KAUS | 06:42 PDT | 18:24 CDT | 9h 41m | N485UA |
| 2026-05-03estimated | KSJC | KAUS | 06:27 PDT | 16:22 CDT | 7h 55m | N453UA |
| 2026-05-02estimated | KVBG | KAUS | 06:24 PDT | 16:18 CDT | 7h 53m | N466UA |
| 2026-05-01estimated | KVBG | KAUS | 06:22 PDT | 17:32 CDT | 9h 09m | N430UA |
| 2026-04-30estimated | KVBG | KAUS | 06:16 PDT | 16:28 CDT | 8h 11m | N896UA |
| 2026-04-28estimated | KVBG | KSFO | 06:38 PDT | 07:18 PDT | 0h 39m | N833UA |
| 2026-04-27estimated | KVBG | KSFO | 06:27 PDT | 07:04 PDT | 0h 36m | N4888U |
| 2026-04-26estimated | KVBG | KSFO | 06:42 PDT | 07:21 PDT | 0h 38m | N835UA |
| 2026-04-25estimated | KSJC | KSFO | 06:27 PDT | 08:34 PDT | 2h 06m | N878UA |
| 2026-04-24estimated | KSBP | ? | 06:35 PDT | 15:52Z | 2h 16m | N879UA |
| 2026-04-23estimated | KSBP | ? | 07:17 PDT | 16:04Z | 1h 46m | N820UA |
| 2026-04-22estimated | KSBP | ? | 06:38 PDT | 15:12Z | 1h 34m | N841UA |
| 2026-04-21estimated | KSBP | ? | 13:21 PDT | 21:08Z | 0h 46m | N492UA |
| 2026-04-20estimated | KSBP | ? | 07:17 PDT | 16:04Z | 1h 47m | N823UA |
| 2026-04-19estimated | KSBP | ? | 06:29 PDT | 15:47Z | 2h 18m | N877UA |
| 2026-04-18estimated | KSBP | ? | 06:37 PDT | 14:14Z | 0h 37m | N815UA |
| 2026-04-17 | KSBP | KSFO | 06:22 PDT | 07:04 PDT | 0h 42m | N470UA |
| 2026-04-16estimated | KSBP | ? | 06:25 PDT | 16:06Z | 2h 40m | N873UA |
| 2026-04-15estimated | KSBP | ? | 06:35 PDT | 14:16Z | 0h 41m | N811UA |
| 2026-04-14estimated | KSBP | ? | 06:38 PDT | 14:24Z | 0h 45m | N481UA |
| 2026-04-13estimated | KSBP | ? | 09:53 PDT | 17:12Z | 0h 19m | N896UA |
| 2026-04-12 | KSBP | KSFO | 06:45 PDT | 07:22 PDT | 0h 37m | N878UA |
| 2026-04-11estimated | KSBP | ? | 06:51 PDT | 15:44Z | 1h 52m | N850UA |
| 2026-04-06estimated | KSBP | ? | 06:31 PDT | 14:12Z | 0h 41m | N801UA |
| 2026-04-05estimated | KSBP | ? | 06:30 PDT | 15:22Z | 1h 51m | N834UA |
| 2026-04-04estimated | KSBP | ? | 06:49 PDT | 14:28Z | 0h 39m | N806UA |
| 2026-04-03estimated | KSBP | ? | 06:24 PDT | 17:14Z | 3h 49m | N889UA |
| 2026-04-02estimated | KSBP | ? | 06:25 PDT | 14:28Z | 1h 02m | N814UA |
| 2026-03-31estimated | KSBP | ? | 07:04 PDT | 17:22Z | 3h 17m | N875UA |
| 2026-03-30estimated | ? | KSFO | 13:24Z | 07:08 PDT | 0h 43m | N835UA |
| 2026-03-28 | KMIA | KSFO | 18:28 EDT | 08:26 PDT | 16h 58m | A3A0CF |
| 2026-03-15partial | KORD | ? | 19:00 CDT | N66837 | ||
| 2026-03-14partial | ? | ? | 00:00Z | N17233 | ||
| 2026-03-13partial | ? | ? | 00:00Z | N37295 | ||
| 2025-10-01 | KSFO San Francisco International | ? | 21:35 PDT | 05:40Z | 1h 04m | A2B154 |
| 2025-09-30 | KSFO San Francisco International | ? | 21:53 PDT | 05:58Z | 1h 05m | A126E8 |
| 2025-09-29 | KSFO San Francisco International | ? | 21:47 PDT | 05:52Z | 1h 05m | A12796 |
| 2025-09-28 | KSFO San Francisco International | ? | 21:37 PDT | 05:38Z | 1h 00m | A5CC13 |
| 2025-09-27 | KSFO San Francisco International | ? | 21:34 PDT | 05:37Z | 1h 02m | A12710 |
| 2025-09-26 | KSFO San Francisco International | ? | 21:46 PDT | 05:49Z | 1h 02m | A12710 |
| 2025-09-25 | KSFO San Francisco International | ? | 21:08 PDT | 05:10Z | 1h 02m | A126E8 |
| 2025-09-24 | KSFO San Francisco International | ? | 21:36 PDT | 05:36Z | 1h 00m | A4418D |
| 2025-09-23 | KSFO San Francisco International | ? | 21:33 PDT | 05:34Z | 1h 00m | A44238 |
| 2025-09-22 | KSFO San Francisco International | ? | 21:07 PDT | 05:10Z | 1h 02m | A441F5 |
| 2025-09-21 | KSFO San Francisco International | ? | 20:55 PDT | 04:56Z | 1h 00m | A2B154 |
| 2025-09-20 | KSFO San Francisco International | ? | 21:12 PDT | 05:12Z | 1h 00m | A12799 |
| 2025-09-19 | KSFO San Francisco International | ? | 21:09 PDT | 05:15Z | 1h 06m | A126CC |
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]