UAL853 is operated by UNITED AIRLINES INC between San Francisco International Airport (KSFO) and Taiwan Taoyuan International Airport (RCTP). The flight is most often flown by a BOEING Boeing 777-200. Typical block time is 11h 40m. SkyMeter has observed 87 legs of this flight number via ADS-B.

✈
FLIGHTS
87
last 90 days
⏱
AVG DURATION
11h 40m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/22/2026
first → last seen
🗺
ROUTES / TYPES
7 / 2
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

4
KSFO → RCTP
59
avg 13h 1m · San Francisco → Taiwan Taoyuan
KHAF → RCTP
12
avg 12h 57m · Half Moon Bay → Taiwan Taoyuan
KOAK → RCTP
2
avg 13h 4m · Metropolitan Oakland → Taiwan Taoyuan
US-0188 → RCTP
2
avg 13h 12m · Coast Guard Air Station San Francisco → Taiwan Taoyuan

Aircraft types

Equipment used on this number

2
B772 BOEING Boeing 777-200
86
B77W BOEING Boeing 777-300ER
1

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 UAL853

30
N785UABOEING Boeing 777-200
→
08/22/2026
12h 52m
No alerts
Replay Analysis
N209UABOEING Boeing 777-200
→
08/21/2026
13h 6m
No alerts
Replay Analysis
N798UABOEING Boeing 777-200
→
08/19/2026
12h 47m
No alerts
Replay Analysis
N791UABOEING Boeing 777-200
→
08/18/2026
12h 48m
No alerts
Replay Analysis
N78003BOEING Boeing 777-200
→
08/17/2026
12h 58m
No alerts
Replay Analysis
N785UABOEING Boeing 777-200
→
08/16/2026
12h 54m
No alerts
Replay Analysis
N76021BOEING Boeing 777-200
→
08/15/2026
12h 52m
No alerts
Replay Analysis
N797UABOEING Boeing 777-200
→
08/14/2026
12h 34m
No alerts
Replay Analysis
N76010BOEING Boeing 777-200
→
08/13/2026
3h 34m
No alerts
Replay Analysis
N57016BOEING Boeing 777-200
→
08/12/2026
12h 49m
No alerts
Replay Analysis
N78003BOEING Boeing 777-200
→
08/11/2026
13h 19m
No alerts
Replay Analysis
N78017BOEING Boeing 777-200
→
08/10/2026
13h 20m
No alerts
Replay Analysis
N796UABOEING Boeing 777-200
→
08/09/2026
12h 28m
No alerts
Replay Analysis
N204UABOEING Boeing 777-200
→
08/08/2026
13h 33m
No alerts
Replay Analysis
N783UABOEING Boeing 777-200
→
08/07/2026
13h 23m
No alerts
Replay Analysis
N78005BOEING Boeing 777-200
→
08/06/2026
13h 2m
No alerts
Replay Analysis
N77022BOEING Boeing 777-200
→
08/05/2026
13h 1m
No alerts
Replay Analysis
N798UABOEING Boeing 777-200
→
08/04/2026
12h 38m
No alerts
Replay Analysis
N796UABOEING Boeing 777-200
→
08/03/2026
12h 47m
No alerts
Replay Analysis
N229UABOEING Boeing 777-200
→
08/02/2026
12h 37m
No alerts
Replay Analysis
N227UABOEING Boeing 777-200
→
08/01/2026
1h 23m
No alerts
Replay Analysis
N791UABOEING Boeing 777-200
→
07/30/2026
12h 36m
No alerts
Replay Analysis
N77022BOEING Boeing 777-200
→
07/29/2026
13h 2m
No alerts
Replay Analysis
N224UABOEING Boeing 777-200
→
07/28/2026
12h 56m
No alerts
Replay Analysis
N791UABOEING Boeing 777-200
→
07/27/2026
29m
No alerts
Replay Analysis
N786UABOEING Boeing 777-200
→
07/26/2026
12h 57m
No alerts
Replay Analysis
N791UABOEING Boeing 777-200
→
07/25/2026
12h 35m
No alerts
Replay Analysis
N57016BOEING Boeing 777-200
→
07/24/2026
12h 33m
No alerts
Replay Analysis
N217UABOEING Boeing 777-200
→
07/23/2026
12h 49m
No alerts
Replay Analysis
N76021BOEING Boeing 777-200
→
07/22/2026
12h 31m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window