UAL939

For travellers

Departure · London (LHR)

Terminal 2

Scheduled 07 Sep 16:15

Board status: Departed 16:38

Airborne since 07 Sep 16:46 (ADS-B)

Board data from heathrow, updated 34137 min ago; times local to each airport.

Flight

Status

Incomplete (signal lost)

Departure

London Heathrow Airport (LHR) — London, United Kingdom

Scheduled departure

2026-09-07 15:15 UTC

Departed

2026-09-07 15:46 UTC

Arrival

San Francisco International Airport (SFO) — San Francisco, United States (scheduled)

Also flies as

UA939

Distance flown

66 km

Straight-line distance

8616 km

Aircraft

Registration

N511WA

Type

RV14

Altitude & speed

Max altitude

24,375 ft

Max ground speed

446 kt

Tracked

5m · 66 km

Altitude (ft, max 24,375)

Ground speed (kt, max 446)

Altitude (ft, max 24,375)

Ground speed (kt, max 446)

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

Departed	Flight	Route	Reg	Aircraft	Status	Distance
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)