Tracked live by the FAA. The scheduled times shown are from a typical Monday because the FAA's flight plan was first seen after takeoff.
UNITED · FLIGHT UA 821
IN THE AIR (OFF 9:59 PM HKT, SEEN BY ADS-B, ETA 7:35 PM PT)
Yesterday
UA 821 · HKG → LAX
took off 9:59 PM HKT · expected to land 7:35 PM PT (scheduled 9:49 PM HKT → 7:39 PM PT)
Forecast issued Mon 12:00 PM ET · 2h after departure
Odds over time
Arrive at LAX more than 15 minutes late?
18%
chance · ±0 pts
+1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
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How late will it get to LAX?
LIVE
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On time or early
82%
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15–30 min late
17%
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30 min–1 hour late
<1%
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1–2 hours late
0%
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Over 2 hours late
0%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%; while it’s in the air they come from the FAA’s arrival estimate.