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 23m. SkyMeter has observed 239 legs of this flight number via ADS-B.

✈
FLIGHTS
239
last 90 days
⏱
AVG DURATION
2h 23m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 8/11/2026
first → last seen
🗺
ROUTES / TYPES
8 / 4
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

3
KSFO → RJAA
18
avg 10h 37m · San Francisco → Narita
KHAF → RJAA
1
avg 10h 36m · Half Moon Bay → Narita
US-0188 → RJAA
1
avg 10h 29m · Coast Guard Air Station San Francisco → Narita

Aircraft types

Equipment used on this number

4
B77W BOEING Boeing 777-300ER
190
B738 BOEING Boeing 737-800
49
B38M BOEING Boeing 737 MAX 8
37
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
N2644UBOEING Boeing 777-300ER
→
8/11/2026
1h 12m
No alerts
Replay Analysis
N2333UBOEING Boeing 777-300ER
→
8/11/2026
43m
No alerts
Replay Analysis
N2333UBOEING Boeing 777-300ER
→
8/10/2026
1h 2m
No alerts
Replay Analysis
N17309BOEING Boeing 737 MAX 8
→
8/10/2026
2h 59m
No alerts
Replay Analysis
N2142UBOEING Boeing 777-300ER
→
8/10/2026
37m
No alerts
Replay Analysis
N2142UBOEING Boeing 777-300ER
→
8/9/2026
1h 12m
No alerts
Replay Analysis
N17316BOEING Boeing 737 MAX 8
→
8/9/2026
2h 3m
No alerts
Replay Analysis
N2644UBOEING Boeing 777-300ER
→
8/9/2026
43m
No alerts
Replay Analysis
N2644UBOEING Boeing 777-300ER
→
8/8/2026
1h 5m
No alerts
Replay Analysis
N17306BOEING Boeing 737 MAX 8
→
8/8/2026
2h 47m
No alerts
Replay Analysis
N2534UBOEING Boeing 777-300ER
→
8/8/2026
51m
No alerts
Replay Analysis
N2534UBOEING Boeing 777-300ER
→
8/7/2026
1h 0m
No alerts
Replay Analysis
N17316BOEING Boeing 737 MAX 8
→
8/7/2026
29m
No alerts
Replay Analysis
N2333UBOEING Boeing 777-300ER
→
8/7/2026
6h 20m
No alerts
Replay Analysis
N2333UBOEING Boeing 777-300ER
→
8/6/2026
1h 13m
No alerts
Replay Analysis
N2333UBOEING Boeing 777-300ER
→
8/6/2026
10h 14m
No alerts
Replay Analysis
N27304BOEING Boeing 737 MAX 8
→
8/6/2026
2h 42m
No alerts
Replay Analysis
N2250UBOEING Boeing 777-300ER
→
8/6/2026
38m
No alerts
Replay Analysis
N2250UBOEING Boeing 777-300ER
→
8/5/2026
54m
No alerts
Replay Analysis
N17316BOEING Boeing 737 MAX 8
→
8/5/2026
2h 47m
No alerts
Replay Analysis
N2136UBOEING Boeing 777-300ER
→
8/5/2026
40m
No alerts
Replay Analysis
N2136UBOEING Boeing 777-300ER
→
8/4/2026
43m
No alerts
Replay Analysis
N17309BOEING Boeing 737 MAX 8
→
8/4/2026
2h 49m
No alerts
Replay Analysis
N2749UBOEING Boeing 777-300ER
→
8/4/2026
40m
No alerts
Replay Analysis
N2749UBOEING Boeing 777-300ER
→
8/3/2026
1h 35m
No alerts
Replay Analysis
N17322BOEING Boeing 737 MAX 8
→
8/3/2026
2h 48m
No alerts
Replay Analysis
N2136UBOEING Boeing 777-300ER
→
8/3/2026
34m
No alerts
Replay Analysis
N2136UBOEING Boeing 777-300ER
→
8/2/2026
1h 3m
No alerts
Replay Analysis
N27304BOEING Boeing 737 MAX 8
→
8/2/2026
2h 55m
No alerts
Replay Analysis
N2333UBOEING Boeing 777-300ER
→
8/2/2026
39m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window