Flight
UAL939
Flight history and live tracking for UAL939, 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.
Route
| Airline | United Airlines |
| Typical origin | EGLL HEATHROW |
| Typical destination | KSFO SAN FRANCISCO INTERNATIONAL |
| Distance | 4,652 nm |
Flight history 220 flights since Aug 2025
| Date | From | To | Dep | Arr | Duration | Aircraft |
|---|---|---|---|---|---|---|
| 2026-10-06 | EGLL HEATHROW | KSFO SAN FRANCISCO INTERNATIONAL | 16:50 BST | 19:06 PDT | 10h 16m | N21102 |
| 2026-10-05 | EGLL HEATHROW | KSFO SAN FRANCISCO INTERNATIONAL | 16:28 BST | 18:49 PDT | 10h 21m | N61109 |
| 2026-10-04 | EGLL HEATHROW | KSFO SAN FRANCISCO INTERNATIONAL | 17:22 BST | 19:43 PDT | 10h 21m | N21102 |
| 2026-10-03 | EGLL HEATHROW | KSFO SAN FRANCISCO INTERNATIONAL | 16:50 BST | 19:15 PDT | 10h 25m | N21102 |
| 2026-10-02 | EGLL HEATHROW | KSFO SAN FRANCISCO INTERNATIONAL | 16:23 BST | 18:35 PDT | 10h 12m | N61103 |
| 2026-10-01 | EGLL HEATHROW | KSFO SAN FRANCISCO INTERNATIONAL | 16:44 BST | 18:51 PDT | 10h 07m | N61109 |
| 2026-09-30 | EGLL HEATHROW | KSFO SAN FRANCISCO INTERNATIONAL | 16:32 BST | 18:28 PDT | 9h 56m | N61111 |
| 2026-09-29partial | ? | ? | 00:00Z | N81110 | ||
| 2026-09-28partial | ? | ? | 00:01Z | N81107 | ||
| 2026-09-27partial | ? | ? | 00:00Z | N61111 | ||
| 2026-09-26partial | EGLL | ? | 03:30 BST | N61109 | ||
| 2026-09-26estimated | EGLL | KSFO | 01:00 BST | 19:28 PDT | 2h 27m | N61109 |
| 2026-09-25partial | ? | ? | 00:00Z | N61101 | ||
| 2026-09-24partial | ? | ? | 00:00Z | N81105 | ||
| 2026-09-23partial | ? | ? | 00:21Z | N61111 | ||
| 2026-09-22partial | ? | ? | 00:55Z | A1BFAC | ||
| 2026-09-21partial | ? | ? | 00:12Z | A9823D | ||
| 2026-09-20partial | ? | ? | 00:00Z | AB0F8B | ||
| 2026-09-18estimated | ? | ? | 07:14Z | 23:58Z | 16h 43m | A9823D |
| 2026-09-18estimated | ? | ? | 00:00Z | 02:12Z | 2h 11m | A9823D |
| 2026-09-17partial | ? | ? | 00:00Z | A9823D | ||
| 2026-09-16partial | ? | ? | 00:09Z | A7F4EF | ||
| 2026-09-15partial | ? | ? | 00:00Z | A7F4E7 | ||
| 2026-09-14partial | ? | ? | 00:23Z | A9823D | ||
| 2026-09-13partial | ? | ? | 00:00Z | A7F4E7 | ||
| 2026-09-12partial | ? | ? | 05:55Z | A1BFAC | ||
| 2026-09-12estimated | EGLL | KSFO | 01:00 BST | 19:10 PDT | 2h 09m | A1BFAC |
| 2026-09-11partial | ? | ? | 00:00Z | A7F4EC | ||
| 2026-09-10partial | ? | ? | 00:08Z | A9823D | ||
| 2026-09-09estimated | ? | ? | 07:02Z | 23:54Z | 16h 52m | A7F4E7 |
| 2026-09-09estimated | ? | ? | 02:32Z | 05:06Z | 2h 33m | A7F4E7 |
| 2026-09-08estimated | ? | ? | 18:03Z | 20:26Z | 2h 22m | A6679B |
| 2026-09-08estimated | EGLL | KSFO | 01:09 BST | 19:02 PDT | 1h 52m | A6679B |
| 2026-09-07estimated | ? | ? | 00:00Z | 02:10Z | 2h 09m | AB0F89 |
Earlier flights (186) - back to 2025-08-14
| Date | From | To | Dep | Arr | Duration | Aircraft |
|---|---|---|---|---|---|---|
| 2026-09-06partial | ? | ? | 00:00Z | A7F4EC | ||
| 2026-09-05partial | ? | ? | 00:00Z | A1BFAC | ||
| 2026-09-04partial | ? | ? | 00:00Z | N71108 | ||
| 2026-09-03partial | ? | ? | 00:02Z | N61101 | ||
| 2026-09-01partial | ? | ? | 00:26Z | AB0F8B | ||
| 2026-08-31partial | ? | ? | 00:00Z | A7F4E9 | ||
| 2026-08-30partial | ? | ? | 00:00Z | A6679B | ||
| 2026-08-29partial | ? | ? | 00:14Z | AB0F89 | ||
| 2026-08-28partial | ? | ? | 00:00Z | A1BFAC | ||
| 2026-08-27partial | ? | ? | 00:00Z | A9823D | ||
| 2026-08-25partial | ? | ? | 00:00Z | AB0FA7 | ||
| 2026-08-24partial | ? | ? | 00:00Z | AB0F8B | ||
| 2026-08-23partial | ? | ? | 00:00Z | A1BFAC | ||
| 2026-08-22partial | ? | ? | 00:04Z | A7F4EC | ||
| 2026-08-21 | EGLL | ? | 16:27 BST | 23:42Z | 8h 15m | N61106 |
| 2026-08-20estimated | ? | ? | 00:27Z | 02:10Z | 1h 43m | N61101 |
| 2026-08-19partial | ? | ? | 00:00Z | N81107 | ||
| 2026-08-18partial | ? | ? | 00:00Z | N61106 | ||
| 2026-08-17partial | ? | ? | 00:40Z | N81105 | ||
| 2026-08-16partial | ? | ? | 03:07Z | N61103 | ||
| 2026-08-15partial | ? | ? | 00:00Z | N61101 | ||
| 2026-08-14partial | ? | ? | 00:00Z | N51104 | ||
| 2026-08-13partial | ? | ? | 00:00Z | N61103 | ||
| 2026-08-12partial | ? | ? | 00:00Z | N61101 | ||
| 2026-08-11estimated | ? | ? | 23:22Z | 23:58Z | 0h 35m | N61101 |
| 2026-07-23estimated | ? | ? | 06:06Z | 16:50Z | 10h 43m | A6679B |
| 2026-07-23estimated | ? | ? | 00:02Z | 02:38Z | 2h 35m | A6679B |
| 2026-07-22estimated | ? | ? | 06:06Z | 23:58Z | 17h 52m | AB0F89 |
| 2026-07-22estimated | ? | ? | 00:53Z | 02:28Z | 1h 34m | A7F4E9 |
| 2026-07-21partial | ? | ? | 00:01Z | AB0F89 | ||
| 2026-07-20estimated | ? | ? | 00:45Z | 17:48Z | 17h 02m | A1BFAC |
| 2026-07-19estimated | ? | ? | 05:54Z | 23:22Z | 17h 28m | A6679B |
| 2026-07-19estimated | ? | ? | 00:16Z | 02:14Z | 1h 57m | A7F4EC |
| 2026-07-18estimated | ? | ? | 06:15Z | 23:40Z | 17h 24m | A7F4E9 |
| 2026-07-18estimated | ? | ? | 00:00Z | 01:40Z | 1h 40m | A6679B |
| 2026-07-17partial | ? | ? | 00:09Z | A7F4E9 | ||
| 2026-07-16partial | ? | ? | 00:24Z | AB0F89 | ||
| 2026-07-15partial | ? | ? | 00:00Z | A7F4EC | ||
| 2026-07-14partial | ? | ? | 00:00Z | A6679B | ||
| 2026-07-13partial | KCPR | ? | 18:22 MDT | A7F4E9 | ||
| 2026-07-12partial | ? | ? | 00:15Z | A6679B | ||
| 2026-07-11partial | ? | ? | 00:44Z | A7F4EC | ||
| 2026-07-10partial | ? | ? | 00:04Z | A1BFAC | ||
| 2026-07-09partial | ? | ? | 00:00Z | A6679B | ||
| 2026-07-08partial | EGLL | ? | 06:47 BST | A7F4EC | ||
| 2026-07-07partial | CYRM | ? | 18:00 MDT | AB0F89 | ||
| 2026-07-06estimated | ? | ? | 07:18Z | 23:58Z | 16h 39m | N25982 |
| 2026-07-06estimated | ? | ? | 00:00Z | 02:08Z | 2h 07m | N25982 |
| 2026-07-05partial | ? | ? | 00:43Z | A6679B | ||
| 2026-07-04estimated | EGLL | ? | 16:44 BST | 23:34Z | 7h 49m | A6679B |
| 2026-07-03estimated | CYCG | ? | 17:00 PDT | 02:20Z | 2h 20m | A7F4EC |
| 2026-07-02partial | ? | ? | 00:05Z | A6679B | ||
| 2026-07-01partial | CYCZ | ? | 18:00 MDT | A1BFAC | ||
| 2026-06-30estimated | ? | ? | 20:31Z | 23:58Z | 3h 26m | A1BFAC |
| 2026-06-30partial | ? | ? | 00:00Z | A7F4EC | ||
| 2026-06-29estimated | ? | ? | 06:03Z | 23:58Z | 17h 55m | A6679B |
| 2026-06-29estimated | ? | ? | 00:00Z | 01:44Z | 1h 43m | A6679B |
| 2026-06-28partial | ? | ? | 05:48Z | A1BFAC | ||
| 2026-06-28estimated | KCTB | ? | 18:00 MDT | 02:16Z | 2h 15m | A1BFAC |
| 2026-06-27partial | CYRM | ? | 18:00 MDT | A7F4E9 | ||
| 2026-06-26partial | ? | ? | 00:27Z | A1BFAC | ||
| 2026-06-25estimated | ? | ? | 06:32Z | 23:50Z | 17h 17m | A6679B |
| 2026-06-25estimated | ? | ? | 00:36Z | 03:18Z | 2h 41m | A6679B |
| 2026-06-24partial | ? | ? | 00:08Z | AB0F89 | ||
| 2026-06-23partial | ? | ? | 00:00Z | A7F4EC | ||
| 2026-06-22partial | CYXD | ? | 18:00 MDT | A7F4E9 | ||
| 2026-06-21partial | ? | ? | 00:00Z | A7F4EC | ||
| 2026-06-20estimated | ? | ? | 05:51Z | 23:48Z | 17h 56m | A6679B |
| 2026-06-20estimated | CYCG | ? | 17:00 PDT | 01:58Z | 1h 58m | A6679B |
| 2026-06-19partial | KSKA | ? | 17:00 PDT | A1BFAC | ||
| 2026-06-18estimated | ? | ? | 17:30Z | 23:58Z | 6h 27m | A1BFAC |
| 2026-06-18estimated | ? | ? | 00:00Z | 16:36Z | 16h 35m | A7F4E9 |
| 2026-06-17estimated | ? | ? | 06:04Z | 23:58Z | 17h 53m | AB0F89 |
| 2026-06-17estimated | ? | ? | 00:00Z | 01:56Z | 1h 55m | AB0F89 |
| 2026-06-16partial | ? | ? | 00:03Z | A1BFAC | ||
| 2026-06-15 | EGLL | ? | 16:52 BST | 23:56Z | 8h 03m | A1BFAC |
| 2026-06-14estimated | CYCG | ? | 17:00 PDT | 01:44Z | 1h 43m | A7F4E9 |
| 2026-06-13partial | ? | ? | 00:00Z | A2CB9E | ||
| 2026-06-12partial | ? | ? | 00:00Z | A31A7B | ||
| 2026-06-11estimated | CYKY | ? | 17:27 CST | 23:58Z | 0h 30m | A31A7B |
| 2026-05-29estimated | ? | ? | 05:48Z | 18:10Z | 12h 22m | A6679B |
| 2026-05-29estimated | ? | ? | 00:23Z | 01:52Z | 1h 28m | A6679B |
| 2026-05-28partial | ? | ? | 00:34Z | A7F4E7 | ||
| 2026-05-27partial | ? | ? | 00:00Z | A7F4E9 | ||
| 2026-05-26partial | CYKY | ? | 18:00 CST | A1BFAC | ||
| 2026-05-25partial | ? | ? | 00:16Z | A7F4E9 | ||
| 2026-05-24partial | KOAK | ? | 18:09 PDT | AB0F89 | ||
| 2026-05-23partial | KCTB | ? | 18:00 MDT | A1BFAC | ||
| 2026-05-22estimated | ? | ? | 07:00Z | 23:58Z | 16h 57m | N786UA |
| 2026-05-22estimated | ? | ? | 00:04Z | 02:10Z | 2h 05m | N786UA |
| 2026-05-21partial | ? | ? | 00:00Z | N784UA | ||
| 2026-05-20partial | EGLL | ? | 01:57 BST | N785UA | ||
| 2026-05-19partial | KSFO | ? | 18:24 PDT | N793UA | ||
| 2026-05-12partial | ? | ? | 00:00Z | N786UA | ||
| 2026-05-11estimated | ? | ? | 15:43Z | 23:58Z | 8h 15m | N225UA |
| 2026-05-11estimated | ? | ? | 00:41Z | 03:02Z | 2h 20m | N225UA |
| 2026-05-10partial | KBOI | ? | 18:44 MDT | N229UA | ||
| 2026-05-09partial | ? | ? | 00:00Z | N797UA | ||
| 2026-05-08partial | KSKA | ? | 17:00 PDT | N797UA | ||
| 2026-05-07partial | KSFO | ? | 17:58 PDT | N791UA | ||
| 2026-05-06partial | ? | ? | 00:08Z | N218UA | ||
| 2026-05-05estimated | CYRM | ? | 18:00 MDT | 17:40Z | 17h 40m | N795UA |
| 2026-05-04partial | ? | ? | 00:00Z | N787UA | ||
| 2026-05-03partial | KSFO | ? | 18:24 PDT | N799UA | ||
| 2026-05-02partial | KSFO | ? | 23:23 PDT | A2007C | ||
| 2026-05-01partial | ? | ? | 00:06Z | N78004 | ||
| 2026-04-30partial | CYCZ | ? | 18:00 MDT | N78005 | ||
| 2026-04-29partial | CYCZ | ? | 18:00 MDT | N74007 | ||
| 2026-04-28estimated | EGLL | KSFO | 07:21 BST | 16:58 PDT | 17h 36m | N78017 |
| 2026-04-28estimated | ? | KSFO | 00:00Z | 19:08 PDT | 2h 08m | N78017 |
| 2026-04-27partial | CYDC | ? | 17:00 PDT | N792UA | ||
| 2026-04-26partial | KSFO | ? | 17:00 PDT | N76021 | ||
| 2026-04-25estimated | EGLL | KSFO | 16:44 BST | 16:44 PDT | 8h 00m | N76021 |
| 2026-04-24estimated | ? | ? | 00:58Z | 01:58Z | 0h 59m | N78017 |
| 2026-04-23partial | ? | ? | 01:11Z | N227UA | ||
| 2026-04-22partial | ? | ? | 00:00Z | N77014 | ||
| 2026-04-21partial | EGLL | ? | 06:29 BST | N218UA | ||
| 2026-04-21estimated | ? | KSFO | 01:13Z | 19:14 PDT | 1h 00m | N218UA |
| 2026-04-20partial | ? | ? | 00:00Z | N782UA | ||
| 2026-04-19estimated | EGLL | KSFO | 07:05 BST | 16:58 PDT | 17h 52m | N2341U |
| 2026-04-19estimated | ? | KSFO | 00:00Z | 18:50 PDT | 1h 50m | N2341U |
| 2026-04-18partial | EGLL | ? | 05:11 BST | N794UA | ||
| 2026-04-18estimated | ? | KSFO | 00:00Z | 19:24 PDT | 2h 23m | N794UA |
| 2026-04-17partial | ? | ? | 00:00Z | N204UA | ||
| 2026-04-16estimated | ? | ? | 06:52Z | 23:58Z | 17h 06m | N77006 |
| 2026-04-16estimated | ? | KSFO | 00:00Z | 18:58 PDT | 1h 57m | N77006 |
| 2026-04-15partial | ? | ? | 00:00Z | N795UA | ||
| 2026-04-14partial | ? | ? | 00:00Z | N796UA | ||
| 2026-04-13partial | ? | ? | 00:00Z | N787UA | ||
| 2026-04-12partial | ? | ? | 04:17Z | N37018 | ||
| 2026-04-12estimated | ? | ? | 00:05Z | 02:02Z | 1h 56m | N37018 |
| 2026-04-11partial | ? | ? | 00:16Z | N786UA | ||
| 2026-04-10estimated | ? | ? | 23:38Z | 23:59Z | 0h 20m | N786UA |
| 2026-04-06estimated | ? | ? | 00:00Z | 16:38Z | 16h 37m | N227UA |
| 2026-04-05partial | ? | ? | 01:15Z | N217UA | ||
| 2026-04-04partial | ? | ? | 00:42Z | N78008 | ||
| 2026-04-03partial | ? | ? | 00:00Z | N57016 | ||
| 2026-04-02partial | ? | ? | 00:00Z | N78002 | ||
| 2026-04-01partial | ? | ? | 00:00Z | N218UA | ||
| 2026-03-31partial | ? | ? | 00:00Z | N204UA | ||
| 2026-03-30partial | ? | ? | 00:00Z | N798UA | ||
| 2026-03-29estimated | EGLL | KSFO | 16:54 BST | 16:58 PDT | 8h 03m | N798UA |
| 2025-10-26estimated | ? | ? | 00:00Z | 03:18Z | 3h 18m | N77012 |
| 2025-10-25partial | ? | ? | 00:31Z | N77019 | ||
| 2025-10-24partial | ? | ? | 00:30Z | N791UA | ||
| 2025-10-23estimated | ? | ? | 00:44Z | 02:22Z | 1h 37m | N787UA |
| 2025-10-22partial | ? | ? | 00:00Z | N794UA | ||
| 2025-10-21estimated | ? | ? | 15:32Z | 23:58Z | 8h 25m | N69020 |
| 2025-10-21estimated | ? | ? | 00:42Z | 02:32Z | 1h 49m | N69020 |
| 2025-10-20partial | ? | ? | 00:00Z | N27015 | ||
| 2025-10-19partial | ? | ? | 00:33Z | N78008 | ||
| 2025-10-15estimated | ? | ? | 00:00Z | 17:20Z | 17h 19m | N228UA |
| 2025-10-14partial | ? | ? | 01:08Z | N787UA | ||
| 2025-10-13partial | ? | ? | 00:26Z | N78002 | ||
| 2025-10-08estimated | EGLL | KSFO | 01:00 BST | 19:02 PDT | 2h 02m | N788UA |
| 2025-10-07partial | ? | ? | 00:00Z | N78017 | ||
| 2025-10-06partial | ? | ? | 00:00Z | N218UA | ||
| 2025-10-05estimated | ? | ? | 14:50Z | 23:58Z | 9h 08m | N78017 |
| 2025-10-04estimated | EGLL | KSFO | 00:23 BST | 16:57 PDT | 0h 34m | N78017 |
| 2025-10-04estimated | EGLL | KSFO | 16:00 BST | 15:46 PDT | 7h 46m | N76010 |
| 2025-10-02 | ? | KSFO San Francisco International | 00:12Z | 19:36 PDT | 2h 23m | AA92F8 |
| 2025-10-01 | KCTB | KSFO San Francisco International | 18:00 MDT | 19:04 PDT | 2h 03m | AAAC4A |
| 2025-09-30 | EGLL | ? | 16:32 BST | 23:40Z | 8h 07m | AAAC4A |
| 2025-09-29 | EGLL | KSFO | 16:41 BST | 19:15 PDT | 10h 33m | AABD7F |
| 2025-09-27 | EGLL | KSFO | 16:52 BST | 19:18 PDT | 10h 26m | A2A915 |
| 2025-09-26 | ? | KSFO San Francisco International | 00:00Z | 18:59 PDT | 1h 59m | A254F7 |
| 2025-09-25 | ? | KSFO San Francisco International | 00:00Z | 18:58 PDT | 1h 58m | A27C78 |
| 2025-09-24 | ? | KSFO San Francisco International | 00:00Z | 18:40 PDT | 1h 40m | A47FDE |
| 2025-09-23 | CYMJ | KOAK | 18:00 CST | 19:10 PDT | 2h 10m | A18CBB |
| 2025-09-22 | KGTF | KSFO San Francisco International | 18:10 MDT | 19:04 PDT | 1h 54m | A31A73 |
| 2025-09-21 | ? | KSFO San Francisco International | 00:00Z | 19:02 PDT | 2h 02m | A2551A |
| 2025-09-20 | ? | KNUQ | 00:00Z | 19:02 PDT | 2h 02m | A596B1 |
| 2025-09-19 | ? | KSFO San Francisco International | 00:05Z | 19:18 PDT | 2h 13m | A22D7B |
| 2025-09-18 | EGLL | ? | 17:08 BST | 23:32Z | 7h 23m | A22D7B |
| 2025-08-26estimated | ? | EGLL | 02:29Z | 05:06 BST | 1h 36m | N17963 |
| 2025-08-25estimated | ? | ? | 02:07Z | 03:21Z | 1h 13m | N17963 |
| 2025-08-24estimated | ? | ? | 07:46Z | 23:23Z | 15h 36m | N15969 |
| 2025-08-23estimated | EGLL | KSFO | 06:32 BST | 10:06 PDT | 11h 34m | N38955 |
| 2025-08-22estimated | EGLL | KSFO | 01:00 BST | 19:48 PDT | 2h 47m | N24979 |
| 2025-08-21estimated | EGLL | KSFO | 07:53 BST | 16:58 PDT | 17h 05m | N17963 |
| 2025-08-20estimated | EGLL | KSFO | 01:00 BST | 20:20 PDT | 3h 19m | N25982 |
| 2025-08-19partial | ? | ? | 00:00Z | N29984 | ||
| 2025-08-17partial | ? | ? | 02:01Z | N25982 | ||
| 2025-08-16estimated | ? | ? | 00:00Z | 16:58Z | 16h 58m | N27964 |
| 2025-08-15estimated | ? | ? | 00:48Z | 17:32Z | 16h 43m | N24976 |
| 2025-08-14estimated | EGLL | KSFO | 16:42 BST | 09:38 PDT | 0h 56m | N24976 |
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 archive (from $9.99, with a free one-day sample). Questions: [email protected]