Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL821

Operated by UAL

Live map

Live map filtered to UAL821. 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
10:54 GMT+8
Timezone
Asia/Hong_Kong
Type
Large Airport
Elevation
28 ft
Coordinates
22.3118, 113.9149

cloud Weather

Wind
40° / 7 kt
Visibility
6 SM
Ceiling
FEW 2,500 ft
Temp / Dew
32°C / 23°C
Altimeter
29.85 inHg

Obs: 2026-05-30T02:30:00.000Z

Raw METAR / TAF 
METAR VHHH 300230Z 04007KT 350V080 9999 FEW025 32/23 Q1011 BECMG 29010KT

TAF VHHH 300200Z 3003/3109 08010KT 9999 FEW015 TX33/3006Z TX32/3106Z TN28/3022Z BECMG 3003/3005 29010KT BECMG 3009/3011 08010KT TEMPO 3009/3013 3500 SHRA FEW010CB SCT020

flight Live Traffic

flight_takeoff 13 Departures
flight_land 8 Arrivals

Arrival

LAX KLAX VFR

Los Angeles International Airport

Los Angeles, US

Local time
19:54 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
125 ft
Coordinates
33.9425, -118.4080

cloud Weather

Wind
250° / 13 kt
Visibility
10 SM
Ceiling
FEW 1,900 ft, FEW 3,000 ft, SCT 5,000 ft
Temp / Dew
17°C / 13°C
Altimeter
30.00 inHg

Obs: 2026-05-30T01:53:00.000Z

Raw METAR / TAF 
METAR KLAX 300153Z 25013KT 10SM FEW019 FEW030 SCT050 17/13 A3000 RMK AO2 SLP158 T01720128 $

TAF KLAX 292329Z 3000/3106 26014G22KT P6SM SKC FM300200 26010KT P6SM SKC FM300500 VRB03KT P6SM SKC FM300900 VRB03KT P6SM OVC010 FM301700 24006KT P6SM SCT015 FM301800 26012KT P6SM SKC FM310400 VRB03KT P6SM SKC

warning FAA Advisories

  • Closed: !LAX 05/277 LAX AD AP CLSD TO NON SKED TRANSIENT GA ACFT EXC 24HR PPR CTC ATLANTIC AVIATION 310-258-9884 OR SIGNATURE AVIATION 310-410-9605 2605271826-2705281600 (May 27 at 18:26 UTC. – May 28 at 16:00 UTC.)

flight Live Traffic

flight_takeoff 356 Departures
flight_land 394 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 A31A34 SFO → MEX May 29, 15:00 UTCMay 29, 15:30 UTC30m - -
2026-05-29 A31A34 SFO → MEX May 29, 14:10 UTCMay 29, 14:30 UTC20m - -
2026-05-29 A31A34 SFO → MEX May 29, 11:35 UTCMay 29, 11:50 UTC15m - -
2026-05-29 A31A34 SFO → MEX May 29, 09:25 UTCMay 29, 10:00 UTC35m - -
2026-05-28 A4095F SFO → MEX May 28, 14:05 UTCMay 29, 02:50 UTC12h 45m - -
2026-05-28 A4095F SFO → MEX May 28, 11:05 UTCMay 28, 11:25 UTC20m - -
2026-05-28 A4095F SFO → MEX May 28, 09:00 UTCMay 28, 10:20 UTC1h 20m - -
2026-05-27 A254D7 SFO → MEX May 27, 14:40 UTCMay 28, 03:50 UTC13h 10m - -
2026-05-27 A254D7 SFO → MEX May 27, 10:20 UTCMay 27, 12:40 UTC2h 20m - -
2026-05-26 A31A77 SFO → MEX May 26, 14:45 UTCMay 26, 17:50 UTC3h 5m - -
2026-05-26 A31A77 SFO → MEX May 26, 14:00 UTCMay 26, 14:14 UTC15m - -
2026-05-26 A31A77 SFO → MEX May 26, 14:06 UTCMay 27, 02:38 UTC12h 32m +21m -6m
2026-05-26 A31A77 SFO → MEX May 26, 11:15 UTCMay 26, 11:34 UTC20m - -
2026-05-26 A31A77 SFO → MEX May 26, 09:19 UTCMay 26, 09:49 UTC30m - -
2026-05-25 A31A57 SFO → MEX May 25, 14:00 UTCMay 26, 03:15 UTC13h 15m - -
2026-05-25 A31A57 SFO → MEX May 25, 11:10 UTCMay 25, 11:30 UTC20m - -
2026-05-25 A31A57 SFO → MEX May 25, 09:05 UTCMay 25, 09:40 UTC35m - -
2026-05-24 A47FDE SFO → MEX May 24, 13:55 UTCMay 25, 03:00 UTC13h 5m - -
2026-05-24 A47FDE SFO → MEX May 24, 09:05 UTCMay 24, 09:30 UTC25m - -
2026-05-24 A47FDE SFO → MEX May 24, 09:05 UTCMay 24, 11:25 UTC2h 20m +20m -1m
2026-05-23 A2A3B6 SFO → MEX May 23, 14:45 UTCMay 24, 03:00 UTC12h 16m - -
2026-05-23 A2A3B6 SFO → MEX May 23, 14:00 UTCMay 23, 14:15 UTC15m - -
2026-05-23 A2A3B6 SFO → MEX May 23, 11:10 UTCMay 23, 11:25 UTC15m - -
2026-05-23 A2A3B6 SFO → MEX May 23, 09:05 UTCMay 23, 09:45 UTC40m - -
2026-05-23 A2A3B6 SFO → MEX May 23, 09:05 UTCMay 23, 11:22 UTC2h 17m +20m +3m
2026-05-22 A22D9F SFO → MEX May 22, 14:10 UTCMay 23, 02:55 UTC12h 45m - -
2026-05-22 A22D9F SFO → MEX May 22, 11:35 UTCMay 22, 11:45 UTC10m - -
2026-05-22 A22D9F SFO → MEX May 22, 09:20 UTCMay 22, 09:55 UTC35m - -
2026-05-22 A22D9F SFO → MEX May 22, 09:20 UTCMay 22, 11:34 UTC2h 14m -265m -7m
2026-05-21 A254D8 SFO → MEX May 21, 13:50 UTCMay 22, 02:40 UTC12h 50m - -

Performance history

Flights tracked
174 showing last 30
Avg arrival delay
-3m
On-time arrival
100% 100% on time
Aircraft used
9

Monthly activity 2 months

Month Flights tracked
May 2026 97
April 2026 77

UAL821 frequently asked

Where does flight UAL821 fly?
UAL821 (UAL) flies from HKG to LAX. View the full route page.
How long is flight UAL821?
Based on observed flights, UAL821 takes on average 4h 5m from takeoff to landing.
How often does UAL821 fly?
UAL821 has been observed flying several times a week in our tracking data. We've recorded 174 flights under this callsign.
Is flight UAL821 usually on time?
Across recent flights, UAL821 arrives 3 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL821?
UAL821 has been operated by 9 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL821 live?
Yes. When UAL821 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.