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

AirlineUnited Airlines
Observed routeCYCG → KSFO

Flight history 122 flights since Sep 2025

DateFromToDepArrDurationAircraft
2026-08-22EGLL HEATHROWKSFO SAN FRANCISCO INTERNATIONAL16:45 BST19:11 PDT10h 26mN21102
2026-08-21EGLL HEATHROWKSFO SAN FRANCISCO INTERNATIONAL16:26 BST18:49 PDT10h 23mN61106
2026-08-20estimated??00:27Z02:10Z1h 43mN61101
2026-08-19partial??00:00ZN81107
2026-08-18partial??00:00ZN61106
2026-08-17partial??00:40ZN81105
2026-08-16partial??03:07ZN61103
2026-08-15partial??00:00ZN61101
2026-08-14partial??00:00ZN51104
2026-08-13partial??00:00ZN61103
2026-08-12partial??00:00ZN61101
2026-08-11estimated??23:22Z23:58Z0h 35mN61101
Earlier flights (110) - back to 2025-09-18
DateFromToDepArrDurationAircraft
2026-07-23estimated??00:02Z16:50Z16h 47mA6679B
2026-07-22partial??00:53ZA7F4E9
2026-07-21partial??00:01ZAB0F89
2026-07-20estimated??00:45Z17:48Z17h 02mA1BFAC
2026-07-19partial??00:16ZA7F4EC
2026-07-18partial??00:00ZA6679B
2026-07-17partial??00:09ZA7F4E9
2026-07-16partial??00:24ZAB0F89
2026-07-15partial??00:00ZA7F4EC
2026-07-14partial??00:00ZA6679B
2026-07-13partialKCPR?18:22 MDTA7F4E9
2026-07-12partial??00:15ZA6679B
2026-07-11partial??00:44ZA7F4EC
2026-07-10partial??00:04ZA1BFAC
2026-07-09partial??00:00ZA6679B
2026-07-08partial??00:02ZA7F4EC
2026-07-07partialCYRM?18:00 MDTAB0F89
2026-07-06partial??00:00ZN25982
2026-07-05partial??00:43ZA6679B
2026-07-04estimatedEGLL?16:44 BST23:34Z7h 49mA6679B
2026-07-03CYCGKSFO17:00 PDT19:20 PDT2h 20mA7F4EC
2026-07-02partial??00:05ZA6679B
2026-07-01partialCYCZ?18:00 MDTA1BFAC
2026-06-30partial??00:00ZA7F4EC
2026-06-29partial??00:00ZA6679B
2026-06-28partialKCTB?18:00 MDTA1BFAC
2026-06-27partialCYRM?18:00 MDTA7F4E9
2026-06-26partial??00:27ZA1BFAC
2026-06-25partial??00:36ZA6679B
2026-06-24partial??00:08ZN81105
2026-06-23partial??00:00ZA7F4EC
2026-06-22partialCYXD?18:00 MDTA7F4E9
2026-06-21partial??00:00ZA7F4EC
2026-06-20partialCYCG?17:00 PDTA6679B
2026-06-19partialKSKA?17:00 PDTA1BFAC
2026-06-18partial??00:00ZA7F4E9
2026-06-17partial??00:00ZAB0F89
2026-06-16partial??00:03ZA1BFAC
2026-06-15EGLL?16:52 BST23:56Z8h 03mA1BFAC
2026-06-14estimatedCYCGKSFO17:00 PDT22:54 PDT5h 54mA7F4E9
2026-06-13partial??00:00ZA2CB9E
2026-06-12partial??00:00ZA31A7B
2026-06-11estimatedCYKY?17:27 CST23:58Z0h 30mA31A7B
2026-05-29estimated??00:23Z18:10Z17h 46mA6679B
2026-05-28partial??00:34ZA7F4E7
2026-05-27partial??00:00ZA7F4E9
2026-05-26partialCYKY?18:00 CSTA1BFAC
2026-05-25partial??00:16ZA7F4E9
2026-05-24partialKOAK?18:09 PDTAB0F89
2026-05-23partialKCTB?18:00 MDTA1BFAC
2026-05-22partial??00:04ZN786UA
2026-05-21partial??00:00ZN784UA
2026-05-20partialEGLL?01:57 BSTN785UA
2026-05-19partialKSFO?18:24 PDTN793UA
2026-05-12partial??00:00ZN786UA
2026-05-11partial??00:41ZN225UA
2026-05-10partialKBOI?18:44 MDTN229UA
2026-05-09partial??00:00ZN797UA
2026-05-08partialKSKA?17:00 PDTN797UA
2026-05-07partialKSFO?17:58 PDTN791UA
2026-05-06partial??00:08ZN218UA
2026-05-05estimatedCYRM?18:00 MDT17:40Z17h 40mN795UA
2026-05-04partial??00:00ZN787UA
2026-05-03partialKSFO?18:24 PDTN799UA
2026-05-02partial??00:22ZN228UA
2026-05-01partial??00:06ZN78004
2026-04-30partialCYCZ?18:00 MDTN78005
2026-04-29partialCYCZ?18:00 MDTN74007
2026-04-28partial??00:00ZN78017
2026-04-27partialCYDC?17:00 PDTN792UA
2026-04-26partialKSFO?17:00 PDTN76021
2026-04-25EGLLKCTB16:44 BST17:44 MDT8h 00mN76021
2026-04-24estimated??00:58Z01:58Z0h 59mN78017
2026-04-23partial??01:11ZN227UA
2026-04-22partial??00:00ZN77014
2026-04-21partial??01:13ZN218UA
2026-04-20partial??00:00ZN782UA
2026-04-19partial??00:00ZN2341U
2026-04-18partial??00:00ZN794UA
2026-04-17partial??00:00ZN204UA
2026-04-16partial??00:00ZN77006
2026-04-15partial??00:00ZN795UA
2026-04-14partial??00:00ZN796UA
2026-04-13partial??00:00ZN787UA
2026-04-12partial??00:05ZN37018
2026-04-11partial??00:16ZN786UA
2026-04-10estimated??23:38Z23:59Z0h 20mN786UA
2026-04-06estimated??00:00Z16:38Z16h 37mN227UA
2026-04-05partial??01:15ZN217UA
2026-04-04partial??00:42ZN78008
2026-04-03partial??00:00ZN57016
2026-04-02partial??00:00ZN78002
2026-04-01partial??00:00ZN218UA
2026-03-31partial??00:00ZN204UA
2026-03-30partial??00:00ZN798UA
2026-03-29EGLL?16:54 BST23:58Z8h 03mN798UA
2025-10-02?KSFO San Francisco International00:12Z19:36 PDT2h 23mAA92F8
2025-10-01KCTBKSFO San Francisco International18:00 MDT19:04 PDT2h 03mAAAC4A
2025-09-30EGLL?16:32 BST23:40Z8h 07mAAAC4A
2025-09-29EGLLKSFO16:41 BST19:15 PDT10h 33mAABD7F
2025-09-27EGLLKSFO16:52 BST19:18 PDT10h 26mA2A915
2025-09-26?KSFO San Francisco International00:00Z18:59 PDT1h 59mA254F7
2025-09-25?KSFO San Francisco International00:00Z18:58 PDT1h 58mA27C78
2025-09-24?KSFO San Francisco International00:00Z18:40 PDT1h 40mA47FDE
2025-09-23CYMJKOAK18:00 CST19:10 PDT2h 10mA18CBB
2025-09-22KGTFKSFO San Francisco International18:10 MDT19:04 PDT1h 54mA31A73
2025-09-21?KSFO San Francisco International00:00Z19:02 PDT2h 02mA2551A
2025-09-20?KNUQ00:00Z19:02 PDT2h 02mA596B1
2025-09-19?KSFO San Francisco International00:05Z19:18 PDT2h 13mA22D7B
2025-09-18EGLL?17:08 BST23:32Z7h 23mA22D7B

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]