Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL3966

Operated by United Airlines

Live map

Live map filtered to UAL3966. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SIN WSSS VFR

Singapore Changi Airport

Singapore, SG

Local time
00:30 GMT+8
Timezone
Asia/Singapore
Type
Large Airport
Elevation
22 ft
Coordinates
1.3502, 103.9940

cloud Weather

Wind
110° / 8 kt
Visibility
6 SM
Ceiling
FEW 2,000 ft, BKN 30,000 ft
Temp / Dew
29°C / 25°C
Altimeter
29.91 inHg

Obs: 2026-09-01T16:00:00.000Z

Raw METAR / TAF 
METAR WSSS 011600Z 11008KT 9999 FEW020 BKN300 29/25 Q1013 NOSIG

TAF WSSS 011100Z 0112/0218 14010KT 9999 FEW015 SCT020

flight Live Traffic

flight_takeoff 4 Departures
flight_land 3 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
09:30 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
250° / 7 kt
Visibility
10 SM
Ceiling
FEW 1,400 ft, BKN 4,300 ft
Temp / Dew
18°C / 12°C
Altimeter
30.01 inHg

Obs: 2026-09-01T15:56:00.000Z

Raw METAR / TAF 
METAR KSFO 011556Z 25007KT 10SM FEW014 BKN043 18/12 A3001 RMK AO2 SLP160 T01780117

TAF KSFO 011519Z 0115/0218 23010KT P6SM FEW014 BKN040 FM012300 26014KT P6SM SKC FM020300 23010KT P6SM SCT045 FM020700 19008KT P6SM SCT020 BKN045 FM021600 26008KT P6SM SCT045

warning FAA Advisories

  • Ground Delay: low ceilings (avg 50 minutes)

flight Live Traffic

flight_takeoff 230 Departures
flight_land 217 Arrivals

Recent history last 2

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-06-07 A7F4E7 SIN → SFO Jun 7, 04:20 UTCJun 7, 17:40 UTC13h 20m - -
2026-06-07 A7F4E7 SIN → SFO Jun 7, 02:50 UTCJun 7, 03:00 UTC10m - -

Performance history

Flights tracked
2
Avg arrival delay
-
On-time arrival
-
Aircraft used
1

Monthly activity 1 month

Month Flights tracked
June 2026 2

UAL3966 frequently asked

Where does flight UAL3966 fly?
UAL3966 (United Airlines) flies from SIN to SFO. View the full route page.
How long is flight UAL3966?
Based on observed flights, UAL3966 takes on average 6h 45m from takeoff to landing.
How often does UAL3966 fly?
UAL3966 has been observed flying rarely in our tracking data. We've recorded 2 flights under this callsign.
Can I track UAL3966 live?
Yes. When UAL3966 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.