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 IFR

Singapore Changi Airport

Singapore, SG

Local time
04:19 GMT+8
Timezone
Asia/Singapore
Type
Large Airport
Elevation
22 ft
Coordinates
1.3502, 103.9940

cloud Weather

Wind
VRB / 2 kt
Visibility
1.55 SM
Ceiling
FEW 1,800 ft, BKN 30,000 ft
Temp / Dew
27°C / 25°C
Altimeter
29.79 inHg
Wx
HZ

Obs: 2026-10-16T20:00:00.000Z

Raw METAR / TAF 
METAR WSSS 162000Z VRB02KT 2500 HZ FEW018 BKN300 27/25 Q1009 NOSIG

TAF WSSS 161700Z 1618/1800 10006KT 3000 HZ FEW015 SCT020

flight Live Traffic

flight_takeoff 1 Departures
flight_land 6 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
13:19 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
30° / 4 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
23°C / 16°C
Altimeter
30.05 inHg

Obs: 2026-10-16T19:56:00.000Z

Raw METAR / TAF 
METAR KSFO 161956Z 03004KT 10SM CLR 23/16 A3005 RMK AO2 SLP177 T02330161 $

TAF KSFO 161720Z 1618/1724 05005KT P6SM SKC FM162300 28009KT P6SM SKC FM170700 04004KT P6SM SKC FM172100 30010KT P6SM SKC

flight Live Traffic

flight_takeoff 294 Departures
flight_land 255 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.