UAL877 is operated by UNITED AIRLINES INC between San Francisco International Airport (KSFO) and Hong Kong International Airport (VHHH). The flight is most often flown by a BOEING Boeing 777-300ER. Typical block time is 13h 13m. SkyMeter has observed 88 legs of this flight number via ADS-B.

✈
FLIGHTS
88
last 90 days
⏱
AVG DURATION
13h 13m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/21/2026
first → last seen
🗺
ROUTES / TYPES
9 / 2
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

6
KSFO → VHHH
58
avg 13h 59m · San Francisco → Hong Kong
KHAF → VHHH
15
avg 13h 55m · Half Moon Bay → Hong Kong
KOAK → VHHH
5
avg 14h 1m · Metropolitan Oakland → Hong Kong
US-0188 → VHHH
1
avg 13h 17m · Coast Guard Air Station San Francisco → Hong Kong
PANC → KSFO
1
avg 4h 34m · Ted Stevens Anchorage → San Francisco
KSFO → PANC
1
avg 7h 47m · San Francisco → Ted Stevens Anchorage

Aircraft types

Equipment used on this number

2
B77W BOEING Boeing 777-300ER
86
B772 BOEING Boeing 777-200
2

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
0
Rejected TO
0
Stall warnings
0
Overspeeds
0
Runway excursion
0
Counts represent flights with at least one occurrence of each flag, not the total event count. See /incidents for individual events.

Recent flights

Newest 30 operations of UAL877

30
N2639UBOEING Boeing 777-300ER
→
08/21/2026
14h 1m
No alerts
Replay Analysis
N2747UBOEING Boeing 777-300ER
→
08/20/2026
13h 41m
No alerts
Replay Analysis
N2748UBOEING Boeing 777-300ER
→
08/19/2026
14h 4m
No alerts
Replay Analysis
N2747UBOEING Boeing 777-300ER
→
08/18/2026
13h 36m
No alerts
Replay Analysis
N2250UBOEING Boeing 777-300ER
→
08/17/2026
13h 50m
No alerts
Replay Analysis
N2142UBOEING Boeing 777-300ER
→
08/16/2026
13h 47m
No alerts
Replay Analysis
N2737UBOEING Boeing 777-300ER
→
08/15/2026
13h 39m
No alerts
Replay Analysis
N2748UBOEING Boeing 777-300ER
→
08/14/2026
13h 51m
No alerts
Replay Analysis
N2644UBOEING Boeing 777-300ER
→
08/13/2026
13h 0m
No alerts
Replay Analysis
N2332UBOEING Boeing 777-300ER
→
08/12/2026
13h 27m
No alerts
Replay Analysis
N2243UBOEING Boeing 777-300ER
→
08/11/2026
13h 59m
No alerts
Replay Analysis
N2341UBOEING Boeing 777-300ER
→
08/10/2026
14h 8m
No alerts
Replay Analysis
N2748UBOEING Boeing 777-300ER
→
08/09/2026
13h 38m
No alerts
Replay Analysis
N2250UBOEING Boeing 777-300ER
→
08/08/2026
14h 18m
No alerts
Replay Analysis
N78008BOEING Boeing 777-200
→
08/07/2026
4h 15m
No alerts
Replay Analysis
N78008BOEING Boeing 777-200
→
08/06/2026
1h 36m
No alerts
Replay Analysis
N2333UBOEING Boeing 777-300ER
→
08/05/2026
13h 49m
No alerts
Replay Analysis
N2644UBOEING Boeing 777-300ER
→
08/04/2026
13h 20m
No alerts
Replay Analysis
N2639UBOEING Boeing 777-300ER
→
08/03/2026
13h 25m
No alerts
Replay Analysis
N2135UBOEING Boeing 777-300ER
→
08/02/2026
13h 29m
No alerts
Replay Analysis
N2136UBOEING Boeing 777-300ER
→
08/01/2026
1h 0m
No alerts
Replay Analysis
N2333UBOEING Boeing 777-300ER
→
07/31/2026
13h 26m
No alerts
Replay Analysis
N2749UBOEING Boeing 777-300ER
→
07/30/2026
13h 51m
No alerts
Replay Analysis
N2645UBOEING Boeing 777-300ER
→
07/29/2026
13h 43m
No alerts
Replay Analysis
N2135UBOEING Boeing 777-300ER
→
07/28/2026
13h 32m
No alerts
Replay Analysis
N2846UBOEING Boeing 777-300ER
→
07/27/2026
13h 53m
No alerts
Replay Analysis
N2644UBOEING Boeing 777-300ER
→
07/26/2026
13h 53m
No alerts
Replay Analysis
N2136UBOEING Boeing 777-300ER
→
07/25/2026
13h 57m
No alerts
Replay Analysis
N2333UBOEING Boeing 777-300ER
→
07/24/2026
13h 34m
No alerts
Replay Analysis
N2135UBOEING Boeing 777-300ER
→
07/23/2026
13h 34m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window