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UAL821

HKG → LAX · Boeing 787-9 · United Airlines

For travellers

Departure · Hong Kong (HKG)

Terminal T1 · Gate 65
Scheduled 27 Sep 21:45 · Departed 27 Sep 22:10 · +25 min
Board status: Dep 22:10
Airborne since 27 Sep 22:20 (ADS-B)

Board data from hongkong, updated 7201 min ago; times local to each airport.

Flight

Status
Completed
Arrival confirmed via
ADS-B (ground reading)
Departure
Hong Kong International Airport (HKG) — Hong Kong, Hong Kong
Scheduled departure
2026-09-27 13:45 UTC
Departed
2026-09-27 14:20 UTC
Arrival
Los Angeles International Airport (LAX) — Los Angeles, United States
Also flies as
UA821
Distance flown
11904 km
Straight-line distance
11664 km
Approach distance
76 km

Aircraft

Registration
N24976
Type
Boeing 787-9
Seats
257 total (149 Economy, 39 Economy Plus, 21 Premium Plus, 48 Polaris)
CO2 (EMEP est., total)
516.6 t (4199 kg/pax Business, 1892 kg/pax Premium Economy, 1467 kg/pax Economy)

Altitude & speed

Max altitude
39,025 ft
Max ground speed
546 kt
Tracked
12h 39m · 11,903 km
Altitude (ft, max 39,025)
021,07442,1470m2h 0m4h 0m6h 0m8h 0m10h 0m12h 0m
Ground speed (kt, max 546)
02955900m2h 0m4h 0m6h 0m8h 0m10h 0m12h 0m
Altitude (ft, max 39,025)
021,07442,1470m4h 0m8h 0m12h 0m
Ground speed (kt, max 546)
02955900m4h 0m8h 0m12h 0m

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

United Airlines (UAL)

Latest flights

DepartedFlightRouteRegAircraftStatusDistance
2026-10-02 14:13 UTC UAL821 HKG → HNL
Hong Kong → Honolulu
 N27959 Boeing 787-9 In progress ~8947 km est.
2026-10-02 09:00 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N27959 Boeing 787-9 Completed 1838 km
2026-10-02 01:11 UTC UAL821 ? → LAX
? → Los Angeles
 N30PX GULFSTREAM AEROSPACE Gulfstream G280 Completed 1036 km
2026-10-01 14:03 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N30PX GULFSTREAM AEROSPACE Gulfstream G280 Incomplete (signal lost) ~11918 km est. (3489 km recorded)
2026-10-01 09:04 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N30PX GULFSTREAM AEROSPACE Gulfstream G280 Completed 1927 km
2026-09-30 21:49 UTC UAL821 ? → LAX
? → Los Angeles
 N24974 Boeing 787-9 Completed 1494 km
2026-09-30 13:51 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N24974 Boeing 787-9 Incomplete (signal lost) ~11921 km est. (3498 km recorded)
2026-09-30 08:59 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N24974 Boeing 787-9 Completed 1869 km
2026-09-30 01:20 UTC UAL821 ? → LAX
? → Los Angeles
 N13954 Boeing 787-9 Completed 1490 km
2026-09-29 14:00 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N13954 Boeing 787-9 Incomplete (signal lost) ~12065 km est. (1834 km recorded)
2026-09-29 10:33 UTC UAL821 ? → HKG
? → Hong Kong
 N13954 Boeing 787-9 Completed 792 km
2026-09-29 09:17 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N13954 Boeing 787-9 Completed (landing confirmed by airport data) ~1774 km est. (483 km recorded)
2026-09-28 14:03 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N28987 Boeing 787-9 Completed 12024 km
2026-09-28 10:23 UTC UAL821 ? → HKG
? → Hong Kong
 N28987 Boeing 787-9 Completed 803 km
2026-09-28 09:10 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N28987 Boeing 787-9 Completed (landing confirmed by airport data) ~1767 km est. (489 km recorded)
2026-09-27 14:20 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N24976 Boeing 787-9 Completed 11904 km
2026-09-27 09:54 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N24976 Boeing 787-9 Completed 1845 km
2026-09-26 15:05 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N29981 Boeing 787-9 Completed 11904 km
2026-09-26 09:43 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N29981 Boeing 787-9 Completed 1857 km
2026-09-25 14:26 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N26952 Boeing 787-9 Completed 11930 km
2026-09-25 12:04 UTC UAL821 HKG → HKG
Hong Kong → Hong Kong
 N26952 Boeing 787-9 Completed 91 km
2026-09-25 10:12 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N26952 Boeing 787-9 Completed (landing confirmed by airport data) ~1772 km est. (486 km recorded)
2026-09-24 14:04 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N13954 Boeing 787-9 Completed 11944 km
2026-09-24 11:05 UTC UAL821 ? → HKG
? → Hong Kong
 N13954 Boeing 787-9 Completed 113 km
2026-09-24 09:06 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N13954 Boeing 787-9 Completed (landing confirmed by airport data) ~1769 km est. (457 km recorded)
2026-09-23 14:05 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N38955 Boeing 787-9 Completed 12003 km
2026-09-23 10:12 UTC UAL821 ? → HKG
? → Hong Kong
 N38955 Boeing 787-9 Completed 969 km
2026-09-23 09:14 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N38955 Boeing 787-9 Completed (landing confirmed by airport data) ~1751 km est. (458 km recorded)
2026-09-22 14:12 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N19951 Boeing 787-9 Completed 11968 km
2026-09-22 09:08 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N19951 Boeing 787-9 Completed 1761 km
2026-09-21 14:02 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N38950 Boeing 787-9 Completed 12074 km
2026-09-21 09:25 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N38950 Boeing 787-9 Completed 1761 km
2026-09-20 14:10 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N19951 Boeing 787-9 Completed 12087 km
2026-09-20 09:05 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N19951 Boeing 787-9 Completed 1845 km
2026-09-19 14:10 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N29981 Boeing 787-9 Completed 12111 km
2026-09-19 09:04 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N29981 Boeing 787-9 Completed 1816 km
2026-09-18 14:02 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N36962 Boeing 787-9 Completed 12076 km
2026-09-18 09:13 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N36962 Boeing 787-9 Completed 1812 km
2026-09-17 14:09 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N29981 Boeing 787-9 Completed 12111 km
2026-09-17 09:42 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N29981 Boeing 787-9 Completed 1848 km
2026-09-16 14:06 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N26967 Boeing 787-9 Completed 12073 km
2026-09-16 10:23 UTC UAL821 HKG → HKG
Hong Kong → Hong Kong
 N26967 Boeing 787-9 Completed 750 km
2026-09-16 09:08 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N26967 Boeing 787-9 Completed (landing confirmed by airport data) ~1819 km est. (544 km recorded)
2026-09-14 14:01 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N27957 Boeing 787-9 Completed 12206 km
2026-09-14 09:27 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N27957 Boeing 787-9 Completed 1847 km
2026-09-13 14:01 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N29981 Boeing 787-9 Completed 12075 km
2026-09-13 08:56 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N29981 Boeing 787-9 Completed 1799 km
2026-09-12 14:11 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N29989 Boeing 787-9 Completed 12111 km
2026-09-12 09:07 UTC UAL821 BKK → HKG
Bangkok → Hong Kong
 N29989 Boeing 787-9 Completed 1771 km
2026-09-11 14:07 UTC UAL821 HKG → LAX
Hong Kong → Los Angeles
 N29961 Boeing 787-9 Completed 12097 km

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