UA821United Airlines · HKG → LAX
live · 44m ago
Route confirmed United Airlines

UA821 Hong KongHKG · 21:45 Los AngelesLAX · 20:20

UA821 by United Airlines flies from Hong Kong (HKG) to Los Angeles (LAX) for the Wed, Aug 19 departure.

Right nowScheduled · today · as of 03:28
21:45

departs HKG · on schedule

Typical gate push+1 minmedian posted departure
Typical arrival−13 minmedian over 5 operations
Wins back in air~14 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 6 operations · gate push → arrival
0+86+173+259 min
08-18
+0 gate
08-17
−4 gate · −15 arrival
08-16
+1 gate · −13 arrival
08-15
−463 gate · +259 arrival
08-14
+7 gate · −5 arrival
08-13
+10 gate · −26 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The last 30 days

arrival outcome per operation

median arrival −13 min · 0 cancelled · 6 operations tracked

The route today

live boards
HKGHong KongOn-time likelyHKG delay board →
LAXLos AngelesOn-time likelyLAX delay board →
HKG→LAXevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
45%Chance of 15+ min delay
2.1%Chance of cancellation
+9 minAvg hub delay right now

Conditions at HKG and LAX are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

How UA821 actually runs

Pro Flight Search has tracked every published board update for UA821 across the HKG and LAX boards: schedule changes, gate pushes and actual clocks. Usually lands ~15 min early. Based on 3 confirmed landings · 3/3 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how UA821 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
08-18HKG 21:45 (+0)LAX
08-17HKG 21:45 21:41 (−4)LAX 20:20 20:05 (−15)
08-16HKG 21:45 21:46 (+1)LAX 20:20 20:07 (−13)
08-15HKG 21:45 14:02 (−463)LAX 20:20 00:39 (+259)
08-14HKG 21:45 21:52 (+7)LAX 20:20 20:15 (−5)
08-13HKG 21:45 21:55 (+10)LAX 20:20 19:54 (−26)

Aircraft

Recent tails: N19951, N24993, N27958.

Board clocks recorded as HKG and LAX published them.

Planning around UA821? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — UA821 Hong Kong to Los Angeles on-time performance, measured from the HKG and LAX airport boards.

Canonical URL
https://proflightsearch.com/flight/UA821
How we measure this →