UAL427 is operated by UNITED AIRLINES INC between San Diego International Airport (KSAN) and Newark Liberty International Airport (KEWR). The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 5h 7m. SkyMeter has observed 86 legs of this flight number via ADS-B.

✈
FLIGHTS
86
last 90 days
⏱
AVG DURATION
5h 7m
tracked time
📅
SERVICE PERIOD
06/17/2025 → 08/18/2026
first → last seen
🗺
ROUTES / TYPES
7 / 4
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

4
KSAN → KEWR
72
avg 5h 13m · San Diego → Newark Liberty
US-2553 → KEWR
2
avg 5h 36m · Speer → Newark Liberty
KNZY → KEWR
1
avg 5h 38m · North Island Naval Air Station-Halsey Field → Newark Liberty
KDEN → KXNA
1
avg 1h 36m · Denver → Northwest Arkansas

Aircraft types

Equipment used on this number

4
B39M BOEING Boeing 737 MAX 9
68
B38M BOEING Boeing 737 MAX 8
39
B739 BOEING Boeing 737-900
4
A320 AIRBUS Airbus A320
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 UAL427

30
N27287BOEING Boeing 737 MAX 8
→
08/18/2026
3h 7m
No alerts
Replay Analysis
N47298BOEING Boeing 737 MAX 8
→
08/18/2026
2h 9m
No alerts
Replay Analysis
N47298BOEING Boeing 737 MAX 8
→
08/17/2026
3h 12m
No alerts
Replay Analysis
N47298BOEING Boeing 737 MAX 8
→
08/17/2026
5h 23m
No alerts
Replay Analysis
N37342BOEING Boeing 737 MAX 8
→
08/17/2026
2h 42m
No alerts
Replay Analysis
N37342BOEING Boeing 737 MAX 8
→
08/16/2026
5h 8m
No alerts
Replay Analysis
N37342BOEING Boeing 737 MAX 8
→
08/16/2026
2h 26m
No alerts
Replay Analysis
N38479BOEING Boeing 737-900
→
08/16/2026
2h 11m
No alerts
Replay Analysis
N38479BOEING Boeing 737-900
→
08/15/2026
5h 26m
No alerts
Replay Analysis
N38479BOEING Boeing 737-900
→
08/15/2026
3h 15m
No alerts
Replay Analysis
N37348BOEING Boeing 737 MAX 8
→
08/15/2026
2h 6m
No alerts
Replay Analysis
N37348BOEING Boeing 737 MAX 8
→
08/14/2026
5h 17m
No alerts
Replay Analysis
N37348BOEING Boeing 737 MAX 8
→
08/14/2026
3h 11m
No alerts
Replay Analysis
N37313BOEING Boeing 737 MAX 8
→
08/14/2026
2h 11m
No alerts
Replay Analysis
N37313BOEING Boeing 737 MAX 8
→
08/13/2026
5h 32m
No alerts
Replay Analysis
N37313BOEING Boeing 737 MAX 8
→
08/13/2026
3h 20m
No alerts
Replay Analysis
N17355BOEING Boeing 737 MAX 8
→
08/12/2026
3h 53m
No alerts
Replay Analysis
N17355BOEING Boeing 737 MAX 8
→
08/11/2026
5h 54m
No alerts
Replay Analysis
N17355BOEING Boeing 737 MAX 8
→
08/11/2026
1h 59m
No alerts
Replay Analysis
N87442BOEING Boeing 737 MAX 9
→
08/11/2026
5h 18m
No alerts
Replay Analysis
N77598BOEING Boeing 737 MAX 9
→
08/10/2026
5h 29m
No alerts
Replay Analysis
N37514BOEING Boeing 737 MAX 9
→
08/09/2026
5h 15m
No alerts
Replay Analysis
N17420BOEING Boeing 737 MAX 9
→
08/08/2026
5h 16m
No alerts
Replay Analysis
N37447BOEING Boeing 737 MAX 9
→
08/07/2026
5h 22m
No alerts
Replay Analysis
N77579BOEING Boeing 737 MAX 9
→
08/06/2026
5h 1m
No alerts
Replay Analysis
N77559BOEING Boeing 737 MAX 9
→
08/05/2026
5h 12m
No alerts
Replay Analysis
N27404BOEING Boeing 737 MAX 9
→
08/04/2026
5h 28m
No alerts
Replay Analysis
N47462BOEING Boeing 737 MAX 9
→
08/03/2026
5h 20m
No alerts
Replay Analysis
N77584BOEING Boeing 737 MAX 9
→
08/02/2026
5h 21m
No alerts
Replay Analysis
N37547BOEING Boeing 737 MAX 9
→
08/01/2026
5h 20m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window