UAL51 is operated by UNITED AIRLINES INC between Newark Liberty International Airport (KEWR) and Adolfo Suárez Madrid–Barajas Airport (LEMD). The flight is most often flown by a BOEING Boeing 767-400. Typical block time is 6h 25m. SkyMeter has observed 94 legs of this flight number via ADS-B.

✈
FLIGHTS
94
last 90 days
⏱
AVG DURATION
6h 25m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/22/2026
first → last seen
🗺
ROUTES / TYPES
5 / 1
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

2
KEWR → LEMD
75
avg 7h 4m · Newark Liberty → Adolfo Suárez Madrid–Barajas
41NJ → LEMD
1
avg 6h 47m · Meadowlands Hospital Medical Center Heliport → Adolfo Suárez Madrid–Barajas

Aircraft types

Equipment used on this number

1
B764 BOEING Boeing 767-400
162

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 UAL51

30
N68061BOEING Boeing 767-400
→
08/22/2026
6h 47m
No alerts
Replay Analysis
N76055BOEING Boeing 767-400
→
08/21/2026
7h 11m
No alerts
Replay Analysis
N69063BOEING Boeing 767-400
→
08/20/2026
6h 21m
No alerts
Replay Analysis
N67052BOEING Boeing 767-400
→
08/19/2026
6h 39m
No alerts
Replay Analysis
N67052BOEING Boeing 767-400
→
08/18/2026
7h 20m
No alerts
Replay Analysis
N67052BOEING Boeing 767-400
→
08/18/2026
41m
No alerts
Replay Analysis
N76054BOEING Boeing 767-400
→
08/18/2026
6h 55m
No alerts
Replay Analysis
N76054BOEING Boeing 767-400
→
08/17/2026
7h 28m
No alerts
Replay Analysis
N76054BOEING Boeing 767-400
→
08/17/2026
32m
No alerts
Replay Analysis
N78060BOEING Boeing 767-400
→
08/17/2026
6h 36m
No alerts
Replay Analysis
N67058BOEING Boeing 767-400
→
08/16/2026
6h 38m
No alerts
Replay Analysis
N67058BOEING Boeing 767-400
→
08/15/2026
33m
No alerts
Replay Analysis
N67058BOEING Boeing 767-400
→
08/15/2026
7h 12m
No alerts
Replay Analysis
N69059BOEING Boeing 767-400
→
08/15/2026
6h 50m
No alerts
Replay Analysis
N67058BOEING Boeing 767-400
→
08/15/2026
3h 25m
No alerts
Replay Analysis
N67058BOEING Boeing 767-400
→
08/14/2026
3h 57m
No alerts
Replay Analysis
N67058BOEING Boeing 767-400
→
08/14/2026
32m
No alerts
Replay Analysis
N76054BOEING Boeing 767-400
→
08/14/2026
6h 30m
No alerts
Replay Analysis
N76054BOEING Boeing 767-400
→
08/13/2026
6h 59m
No alerts
Replay Analysis
N76054BOEING Boeing 767-400
→
08/13/2026
28m
No alerts
Replay Analysis
N66057BOEING Boeing 767-400
→
08/12/2026
6h 33m
No alerts
Replay Analysis
N76064BOEING Boeing 767-400
→
08/11/2026
6h 9m
No alerts
Replay Analysis
N76064BOEING Boeing 767-400
→
08/10/2026
6h 49m
No alerts
Replay Analysis
N76064BOEING Boeing 767-400
→
08/10/2026
40m
No alerts
Replay Analysis
N76055BOEING Boeing 767-400
→
08/10/2026
1h 20m
No alerts
Replay Analysis
N59053BOEING Boeing 767-400
→
08/09/2026
7h 34m
No alerts
Replay Analysis
N76062BOEING Boeing 767-400
→
08/08/2026
7h 34m
No alerts
Replay Analysis
N69059BOEING Boeing 767-400
→
08/07/2026
7h 37m
No alerts
Replay Analysis
N66056BOEING Boeing 767-400
→
08/06/2026
7h 39m
No alerts
Replay Analysis
N59053BOEING Boeing 767-400
→
08/05/2026
6h 58m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window