Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL939

Operated by UAL

Live map

Live map filtered to UAL939. Shown when the flight is currently airborne.

Route airports View route page →

Departure

LHR EGLL IFR

London Heathrow Airport

London, GB

Local time
06:33 GMT+1
Timezone
Europe/London
Type
Large Airport
Elevation
83 ft
Coordinates
51.4707, -0.4599

cloud Weather

Wind
180° / 11 kt
Visibility
3.11 SM
Ceiling
BKN 700 ft, BKN 2,600 ft
Temp / Dew
12°C / 11°C
Altimeter
30.00 inHg
Wx
-RA -DZ

Obs: 2026-04-15T05:20:00.000Z

Raw METAR / TAF 
METAR EGLL 150520Z AUTO 18011KT 160V230 5000 -RADZ BKN007 BKN026 12/11 Q1016 RERA TEMPO 4000 RADZ BKN004

TAF EGLL 150458Z 1506/1612 18010KT 9999 BKN014 TEMPO 1506/1510 6000 -RA SCT007 BKN009 PROB30 TEMPO 1506/1508 2500 RADZ BKN004 BECMG 1510/1513 SCT025 TEMPO 1511/1519 6000 RA SHRA PROB40 TEMPO 1513/1518 21016G26KT 3000 +SHRA BKN014 PROB30 TEMPO 1602/1608 BKN012 BECMG 1609/1612 24011KT PROB30 TEMPO 1610/1612 7000 SHRA

flight Live Traffic

flight_takeoff 36 Departures
flight_land 74 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
22:33 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
280° / 10 kt
Visibility
10 SM
Ceiling
FEW 2,800 ft
Temp / Dew
12°C / 7°C
Altimeter
30.15 inHg

Obs: 2026-04-15T04:56:00.000Z

Raw METAR / TAF 
METAR KSFO 150456Z 28010KT 10SM FEW028 12/07 A3015 RMK AO2 SLP209 T01170072 $

TAF KSFO 150520Z 1506/1612 28012KT P6SM FEW030 FM151400 28014KT P6SM BKN050 FM151900 27018KT P6SM BKN150 FM160400 27015KT P6SM BKN030

flight Live Traffic

flight_takeoff 221 Departures
flight_land 280 Arrivals

Recent history last 7

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-04-13 AAD012 - Apr 13, 20:25 UTCApr 13, 20:50 UTC25m - -
2026-04-13 AAD012 LHR → SFO Apr 13, 16:15 UTCApr 13, 17:10 UTC55m - -
2026-04-13 AAD012 LHR → SFO Apr 13, 16:10 UTCApr 13, 17:10 UTC1h 0m - -
2026-04-13 AAD012 LHR → SFO Apr 13, 15:39 UTCApr 14, 02:12 UTC10h 33m +24m +8m
2026-04-13 AAAC4A LHR → SFO Apr 13, 00:20 UTCApr 13, 02:00 UTC1h 40m - -
2026-04-12 AAAC4A LHR → SFO Apr 12, 23:55 UTCApr 13, 02:00 UTC2h 5m - -
2026-04-12 AAAC4A LHR → SFO Apr 12, 17:35 UTCApr 12, 20:15 UTC2h 40m - -

Performance history

Flights tracked
7
Avg arrival delay
+8m
On-time arrival
100% 100% on time
Aircraft used
2

Monthly activity 1 month

Month Flights tracked
April 2026 7

UAL939 frequently asked

Where does flight UAL939 fly?
UAL939 (UAL) flies from LHR to SFO. View the full route page.
How long is flight UAL939?
Based on observed flights, UAL939 takes on average 2h 45m from takeoff to landing.
How often does UAL939 fly?
UAL939 has been observed flying occasionally in our tracking data. We've recorded 7 flights under this callsign.
Is flight UAL939 usually on time?
Across recent flights, UAL939 arrives with an average 8-minute delay. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL939?
UAL939 has been operated by 2 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL939 live?
Yes. When UAL939 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.