United Airlines
Is UA821 delayed?
No delay reported yet. UA821 is scheduled to reach Hong Kong at 20:45 on Nov 15 (as of Nov 14, 16:24 UTC).
Usually on time: arrived within 15 min of schedule on 39 of the last 42 flights.
No live update yet
Showing the published schedule until live times come in.
Update time unavailable
Departure
Bangkok
BKK
Scheduled
Not available
Arrival
Hong Kong
HKG
Scheduled
Nov 15
Times shown in airport local time
Service date: · Scheduled arrival date; departure time unavailable (Asia/Hong_Kong)
Flight details
Departure · UTC
- Scheduled
- Not available
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 19 min early
Hong Kong → Los Angeles
- 28 min late
Bangkok → Hong Kong
- 29 min early
Hong Kong → Los Angeles
- 18 min early
Bangkok → Hong Kong
- 19 min early
Hong Kong → Los Angeles
Is UA821 usually late?
Period: Oct 15, 2026 – Nov 14, 2026
On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Compares scheduled and actual arrival times. Cancelled and diverted flights are left out. Some flights may be missing.
At the airports today
Bangkok Suvarnabhumi (BKK) departures
No departures recorded yet today.
Hong Kong (HKG) departures
- Left more than 15 min late
- 0 of 0
- Cancelled today
- 1
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Nov 13, 2026Arrived | Hong Kong | Los Angeles | -19 | |
| Nov 13, 2026Arrived | Bangkok | Hong Kong | 28 | |
| Nov 12, 2026Arrived | Hong Kong | Los Angeles | -29 | |
| Nov 12, 2026Arrived | Bangkok | Hong Kong | -18 | |
| Nov 11, 2026Arrived | Hong Kong | Los Angeles | -19 | |
| Nov 11, 2026Arrived | Bangkok | Hong Kong | -19 | |
| Nov 10, 2026Arrived | Hong Kong | Los Angeles | -4 | |
| Nov 9, 2026Arrived | Hong Kong | Los Angeles | -65 | |
| Nov 9, 2026Arrived | Bangkok | Hong Kong | -4 | |
| Nov 8, 2026Arrived | Hong Kong | Los Angeles | -17 | |
| Nov 8, 2026Arrived | Bangkok | Hong Kong | -4 | |
| Nov 6, 2026Arrived | Bangkok | Hong Kong | 39 | |
| Nov 5, 2026Arrived | Hong Kong | Los Angeles | -25 | |
| Nov 4, 2026Arrived | Bangkok | Hong Kong | 6 | |
| Nov 3, 2026Arrived | Hong Kong | Los Angeles | -33 | |
| Nov 2, 2026Arrived | Hong Kong | Los Angeles | -5 | |
| Nov 2, 2026Arrived | Bangkok | Hong Kong | -13 | |
| Oct 31, 2026Arrived | Hong Kong | Los Angeles | 30 | |
| Oct 31, 2026Arrived | Bangkok | Hong Kong | 1 | |
| Oct 30, 2026Arrived | Hong Kong | Los Angeles | -2 | |
| Oct 29, 2026Arrived | Hong Kong | Los Angeles | -14 | |
| Oct 29, 2026Arrived | Bangkok | Hong Kong | -4 | |
| Oct 29, 2026Arrived | Hong Kong | Los Angeles | 0 | |
| Oct 27, 2026Arrived | Hong Kong | Los Angeles | 2 | |
| Oct 27, 2026Arrived | Bangkok | Hong Kong | -17 | |
| Oct 26, 2026Arrived | Hong Kong | Los Angeles | -27 | |
| Oct 25, 2026Arrived | Hong Kong | Los Angeles | -8 | |
| Oct 25, 2026Arrived | Bangkok | Hong Kong | -10 | |
| Oct 24, 2026Arrived | Hong Kong | Los Angeles | 2 | |
| Oct 24, 2026Arrived | Bangkok | Hong Kong | -21 | |
| Oct 23, 2026Arrived | Hong Kong | Los Angeles | -37 | |
| Oct 22, 2026Arrived | Bangkok | Hong Kong | 2 | |
| Oct 21, 2026Arrived | Bangkok | Hong Kong | -11 | |
| Oct 20, 2026Arrived | Hong Kong | Los Angeles | -2 | |
| Oct 20, 2026Arrived | Bangkok | Hong Kong | -17 | |
| Oct 19, 2026Arrived | Hong Kong | Los Angeles | 4 | |
| Oct 19, 2026Arrived | Bangkok | Hong Kong | 0 | |
| Oct 18, 2026Arrived | Hong Kong | Los Angeles | -27 | |
| Oct 18, 2026Arrived | Bangkok | Hong Kong | -20 | |
| Oct 17, 2026Arrived | Hong Kong | Los Angeles | -48 | |
| Oct 17, 2026Arrived | Bangkok | Hong Kong | 15 | |
| Oct 16, 2026Arrived | Hong Kong | Los Angeles | -52 |