UAL837 is operated by UNITED AIRLINES INC between San Francisco International Airport (KSFO) and Narita International Airport (RJAA). The flight is most often flown by a BOEING Boeing 777-300ER. Typical block time is 2h 24m. SkyMeter has observed 236 legs of this flight number via ADS-B.

✈
FLIGHTS
236
last 90 days
⏱
AVG DURATION
2h 24m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/22/2026
first → last seen
🗺
ROUTES / TYPES
7 / 4
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

2
KSFO → RJAA
17
avg 10h 35m · San Francisco → Narita
KHAF → RJAA
3
avg 10h 11m · Half Moon Bay → Narita

Aircraft types

Equipment used on this number

4
B77W BOEING Boeing 777-300ER
187
B38M BOEING Boeing 737 MAX 8
45
B738 BOEING Boeing 737-800
39
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 UAL837

30
N2639UBOEING Boeing 777-300ER
→
08/22/2026
53m
No alerts
Replay Analysis
N17316BOEING Boeing 737 MAX 8
→
08/22/2026
3h 0m
No alerts
Replay Analysis
N2747UBOEING Boeing 777-300ER
→
08/22/2026
46m
No alerts
Replay Analysis
N2747UBOEING Boeing 777-300ER
→
08/21/2026
1h 4m
No alerts
Replay Analysis
N17322BOEING Boeing 737 MAX 8
→
08/21/2026
2h 50m
No alerts
Replay Analysis
N2138UBOEING Boeing 777-300ER
→
08/21/2026
42m
No alerts
Replay Analysis
N2333UBOEING Boeing 777-300ER
→
08/19/2026
1h 24m
No alerts
Replay Analysis
N17302BOEING Boeing 737 MAX 8
→
08/19/2026
2h 52m
No alerts
Replay Analysis
N2250UBOEING Boeing 777-300ER
→
08/19/2026
46m
No alerts
Replay Analysis
N2250UBOEING Boeing 777-300ER
→
08/18/2026
1h 5m
No alerts
Replay Analysis
N17306BOEING Boeing 737 MAX 8
→
08/18/2026
2h 57m
No alerts
Replay Analysis
N2142UBOEING Boeing 777-300ER
→
08/18/2026
40m
No alerts
Replay Analysis
N2142UBOEING Boeing 777-300ER
→
08/17/2026
1h 0m
No alerts
Replay Analysis
N37319BOEING Boeing 737 MAX 8
→
08/17/2026
2h 57m
No alerts
Replay Analysis
N2737UBOEING Boeing 777-300ER
→
08/17/2026
5h 56m
No alerts
Replay Analysis
N2737UBOEING Boeing 777-300ER
→
08/16/2026
4h 34m
No alerts
Replay Analysis
N2737UBOEING Boeing 777-300ER
→
08/16/2026
10h 32m
No alerts
Replay Analysis
N27304BOEING Boeing 737 MAX 8
→
08/16/2026
2h 53m
No alerts
Replay Analysis
N2748UBOEING Boeing 777-300ER
→
08/16/2026
6h 26m
No alerts
Replay Analysis
N2748UBOEING Boeing 777-300ER
→
08/15/2026
4h 34m
No alerts
Replay Analysis
N2748UBOEING Boeing 777-300ER
→
08/15/2026
11h 1m
No alerts
Replay Analysis
N37319BOEING Boeing 737 MAX 8
→
08/15/2026
2h 53m
No alerts
Replay Analysis
N2644UBOEING Boeing 777-300ER
→
08/15/2026
6h 28m
No alerts
Replay Analysis
N2644UBOEING Boeing 777-300ER
→
08/14/2026
1h 8m
No alerts
Replay Analysis
N2644UBOEING Boeing 777-300ER
→
08/14/2026
10h 5m
No alerts
Replay Analysis
N27304BOEING Boeing 737 MAX 8
→
08/14/2026
2h 40m
No alerts
Replay Analysis
N2332UBOEING Boeing 777-300ER
→
08/14/2026
5h 43m
No alerts
Replay Analysis
N2332UBOEING Boeing 777-300ER
→
08/13/2026
1h 20m
No alerts
Replay Analysis
N2332UBOEING Boeing 777-300ER
→
08/13/2026
9h 52m
No alerts
Replay Analysis
N37319BOEING Boeing 737 MAX 8
→
08/13/2026
2h 17m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window