Apparatus

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flight_takeoff Flight

UAL878

Operated by United Airlines

Live map

Live map filtered to UAL878. Shown when the flight is currently airborne.

Route airports View route page →

Departure

HKG VHHH VFR

Hong Kong International Airport

Hong Kong, HK

Local time
15:03 GMT+8
Timezone
Asia/Hong_Kong
Type
Large Airport
Elevation
28 ft
Coordinates
22.3118, 113.9149

cloud Weather

Wind
190° / 13 kt
Visibility
6 SM
Ceiling
FEW 1,200 ft, SCT 2,500 ft
Temp / Dew
29°C / 23°C
Altimeter
29.79 inHg

Obs: 2026-04-15T06:30:00.000Z

Raw METAR / TAF 
METAR VHHH 150630Z 19013KT 160V220 9999 FEW012 SCT025 29/23 Q1009 NOSIG

TAF VHHH 150500Z 1506/1612 18010KT 9999 FEW010 SCT025 TX29/1506Z TX29/1606Z TN26/1522Z

flight Live Traffic

flight_takeoff 17 Departures
flight_land 10 Arrivals

Arrival

SFO KSFO MVFR

San Francisco International Airport

San Francisco, US

Local time
00:03 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
270° / 11 kt
Visibility
10 SM
Ceiling
BKN 2,200 ft
Temp / Dew
12°C / 7°C
Altimeter
30.13 inHg

Obs: 2026-04-15T06:56:00.000Z

Raw METAR / TAF 
METAR KSFO 150656Z 27011KT 10SM BKN022 12/07 A3013 RMK AO2 SLP203 T01220072 $

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 169 Departures
flight_land 155 Arrivals

Recent history last 4

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-04-13 A21DC4 HKG → SFO Apr 13, 17:50 UTCApr 13, 18:35 UTC45m - -
2026-04-13 A21DC4 HKG → SFO Apr 13, 15:50 UTCApr 13, 18:35 UTC2h 45m - -
2026-04-13 A21DC4 HKG → SFO Apr 13, 14:51 UTCApr 14, 02:58 UTC12h 7m +21m +7m
2026-04-13 A1C82A HKG → SFO Apr 13, 02:30 UTCApr 13, 03:10 UTC40m - -

Performance history

Flights tracked
4
Avg arrival delay
+7m
On-time arrival
100% 100% on time
Aircraft used
2

Monthly activity 1 month

Month Flights tracked
April 2026 4

UAL878 frequently asked

Where does flight UAL878 fly?
UAL878 (United Airlines) flies from HKG to SFO. View the full route page.
How long is flight UAL878?
Based on observed flights, UAL878 takes on average 4h 4m from takeoff to landing.
How often does UAL878 fly?
UAL878 has been observed flying rarely in our tracking data. We've recorded 4 flights under this callsign.
Is flight UAL878 usually on time?
Across recent flights, UAL878 arrives with an average 7-minute delay. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL878?
UAL878 has been operated by 2 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL878 live?
Yes. When UAL878 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.