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UAL939

LHR → SFO · Boeing 787-9 · United Airlines

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Departure · London (LHR)

Terminal 2
Scheduled 16:15
Board status: Departed 16:23
Airborne since 16:23 (ADS-B)

Arrival · San Francisco (SFO)

Terminal ITM · Baggage belt CL4
Scheduled 19:15 · Estimated 18:54 · early
Board status: On time
In the air, ~8h 8m to go (12% of the route flown)

Board data from heathrow, sfo, updated 1 min ago; times local to each airport.

Flight

Status
In progress
Departure
London Heathrow Airport (LHR) — London, United Kingdom
Scheduled departure
2026-10-02 15:15 UTC
Departed
2026-10-02 15:23 UTC
Arrival
San Francisco International Airport (SFO) — San Francisco, United States (scheduled)
Scheduled arrival
2026-10-03 02:15 UTC
Estimated arrival
2026-10-03 01:54 UTC
Progress
12% · ~8h 8m remaining
Also flies as
UA939
Codeshares
AC3716, LH8572, LX3122, OS7911, SN9106
Distance flown
1028 km
Straight-line distance
8616 km

Aircraft

Registration
N61103
Type
Boeing 787-9
Seats
257 total (149 Economy, 39 Economy Plus, 21 Premium Plus, 48 Polaris) (typical for type, not this tail)
CO2 (EMEP est., total)
384.2 t (1092 kg/pax Economy, 1407 kg/pax Premium Economy, 3124 kg/pax Business)

Altitude & speed

Max altitude
36,000 ft
Max ground speed
520 kt
Tracked
1h 10m · 1,028 km
Note
still in progress - the track so far
Altitude (ft, max 36,000)
019,44038,8800m30m1h 0m
Ground speed (kt, max 520)
02815620m30m1h 0m
Altitude (ft, max 36,000)
019,44038,8800m1h 0m
Ground speed (kt, max 520)
02815620m1h 0m

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

United Airlines (UAL)

Latest flights

DepartedFlightRouteRegAircraftStatusDistance
2026-10-02 15:23 UTC UAL939 LHR → SFO
London → San Francisco
 N61103 Boeing 787-9 In progress ~8616 km est.
2026-10-01 15:43 UTC UAL939 LHR → SFO
London → San Francisco
 N61109 Boeing 787-9 Completed 8970 km
2026-09-30 15:31 UTC UAL939 LHR → SFO
London → San Francisco
 N61111 Boeing 787-9 Completed 9030 km
2026-09-29 15:40 UTC UAL939 LHR → SFO
London → San Francisco
 N71108 Boeing 787-9 Completed 8883 km
2026-09-28 15:36 UTC UAL939 LHR → SFO
London → San Francisco
 N81110 Boeing 787-9 Completed 8895 km
2026-09-27 15:42 UTC UAL939 LHR → SFO
London → San Francisco
 N81107 Boeing 787-9 Completed 8973 km
2026-09-26 15:47 UTC UAL939 LHR → SFO
London → San Francisco
 N61111 Boeing 787-9 Completed 8860 km
2026-09-25 15:32 UTC UAL939 LHR → SFO
London → San Francisco
 N61109 Boeing 787-9 Completed 8886 km
2026-09-24 15:30 UTC UAL939 LHR → SFO
London → San Francisco
 N61101 Boeing 787-9 Completed 8836 km
2026-09-23 15:38 UTC UAL939 LHR → SFO
London → San Francisco
 N81105 Boeing 787-9 Completed 9029 km
2026-09-22 15:52 UTC UAL939 LHR → SFO
London → San Francisco
 N61111 Boeing 787-9 Completed 8903 km
2026-09-21 17:45 UTC UAL939 LHR → SFO
London → San Francisco
 N21102 Boeing 787-9 Completed 8950 km
2026-09-20 15:49 UTC UAL939 LHR → SFO
London → San Francisco
 N71108 Boeing 787-9 Completed 8842 km
2026-09-19 15:32 UTC UAL939 LHR → SFO
London → San Francisco
 N81107 Boeing 787-9 Completed 9077 km
2026-09-18 15:30 UTC UAL939 LHR → SFO
London → San Francisco
 N61101 Boeing 787-9 Completed 9039 km
2026-09-17 15:32 UTC UAL939 LHR → SFO
London → San Francisco
 N71108 Boeing 787-9 Completed 9191 km
2026-09-16 15:28 UTC UAL939 LHR → SFO
London → San Francisco
 N71108 Boeing 787-9 Completed 9164 km
2026-09-15 15:33 UTC UAL939 LHR → SFO
London → San Francisco
 N61109 Boeing 787-9 Completed 9272 km
2026-09-14 15:41 UTC UAL939 LHR → SFO
London → San Francisco
 N61101 Boeing 787-9 Completed 9096 km
2026-09-13 16:16 UTC UAL939 LHR → SFO
London → San Francisco
 N71108 Boeing 787-9 Completed 9140 km
2026-09-12 15:29 UTC UAL939 LHR → SFO
London → San Francisco
 N61101 Boeing 787-9 Completed 9018 km
2026-09-11 15:33 UTC UAL939 LHR → SFO
London → San Francisco
 N21102 Boeing 787-9 Completed 9304 km
2026-09-10 15:58 UTC UAL939 LHR → SFO
London → San Francisco
 N61106 Boeing 787-9 Completed 9217 km
2026-09-09 15:36 UTC UAL939 LHR → SFO
London → San Francisco
 N71108 Boeing 787-9 Completed 9068 km
2026-09-07 15:46 UTC UAL939 LHR → SFO
London → San Francisco
 N511WA RV14 Incomplete (signal lost) ~8610 km est. (66 km recorded)
2026-09-07 15:38 UTC UAL939 LHR → SFO
London → San Francisco
 N51104 Boeing 787-9 Completed 9325 km
2026-09-06 15:35 UTC UAL939 LHR → SFO
London → San Francisco
 N81105 Boeing 787-9 Completed 9018 km
2026-09-05 15:38 UTC UAL939 LHR → SFO
London → San Francisco
 N61106 Boeing 787-9 Completed 8922 km
2026-09-04 15:58 UTC UAL939 LHR → SFO
London → San Francisco
 N21102 Boeing 787-9 Completed 8909 km
2026-09-03 15:52 UTC UAL939 LHR → ?
London → ?
 — — Incomplete (signal lost) 9 km
2026-09-03 15:40 UTC UAL939 LHR → SFO
London → San Francisco
 N71108 Boeing 787-9 Completed 9080 km
2026-09-02 15:42 UTC UAL939 LHR → SFO
London → San Francisco
 N61101 Boeing 787-9 Completed 9020 km
2026-09-01 15:45 UTC UAL939 LHR → SFO
London → San Francisco
 N81110 Boeing 787-9 Completed 9040 km
2026-08-31 15:45 UTC UAL939 LHR → SFO
London → San Francisco
 N81107 Boeing 787-9 Completed 9252 km
2026-08-30 15:40 UTC UAL939 LHR → SFO
London → San Francisco
 N61103 Boeing 787-9 Completed 9032 km
2026-08-29 15:09 UTC UAL939 LHR → SFO
London → San Francisco
 N51104 Boeing 787-9 Completed 9199 km
2026-08-28 16:36 UTC UAL939 LHR → SFO
London → San Francisco
 N81105 Boeing 787-9 Completed 9106 km
2026-08-27 15:47 UTC UAL939 LHR → SFO
London → San Francisco
 N21102 Boeing 787-9 Completed 9141 km
2026-08-26 15:43 UTC UAL939 LHR → SFO
London → San Francisco
 N71108 Boeing 787-9 Completed 9246 km
2026-08-25 15:02 UTC UAL939 LHR → SFO
London → San Francisco
 N61101 Boeing 787-9 Completed 9031 km
2026-08-24 15:06 UTC UAL939 LHR → SFO
London → San Francisco
 N81110 Boeing 787-9 Completed 9080 km
2026-08-23 15:23 UTC UAL939 LHR → SFO
London → San Francisco
 N81107 Boeing 787-9 Completed 9117 km
2026-08-22 15:45 UTC UAL939 LHR → SFO
London → San Francisco
 N21102 Boeing 787-9 Completed 10346 km
2026-08-21 15:05 UTC UAL939 LHR → SFO
London → San Francisco
 N61106 Boeing 787-9 Completed 10408 km
2026-08-19 15:17 UTC UAL939 LHR → SFO
London → San Francisco
 N61101 Boeing 787-9 Completed 19158 km
2026-08-18 15:44 UTC UAL939 LHR → SFO
London → San Francisco
 N81107 Boeing 787-9 Completed 14447 km
2026-08-17 15:32 UTC UAL939 LHR → SFO
London → San Francisco
 N61106 Boeing 787-9 Completed 10418 km
2026-08-16 15:12 UTC UAL939 LHR → SFO
London → San Francisco
 N81105 Boeing 787-9 Completed 10628 km
2026-08-15 19:01 UTC UAL939 LHR → SFO
London → San Francisco
 N61103 Boeing 787-9 Completed 10716 km
2026-08-14 15:12 UTC UAL939 LHR → SFO
London → San Francisco
 N61101 Boeing 787-9 Completed ~21916 km est. (10584 km recorded)

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