UAL1423

UNITED AIRLINES INC · DEN → EWR

UAL1423 is operated by UNITED AIRLINES INC between Denver International Airport (KDEN) and Newark Liberty International Airport (KEWR). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 4h 5m. SkyMeter has observed 123 legs of this flight number via ADS-B.

✈
FLIGHTS
123
last 90 days
⏱
AVG DURATION
4h 5m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/20/2026
first → last seen
🗺
ROUTES / TYPES
12 / 3
city pairs · airframes
⚠
INCIDENT RATE
1.6%
2 flagged

Routes flown

By count · last 90 days

8
KDEN → KEWR
39
avg 3h 43m · Denver → Newark Liberty
KEWR → CYVR
35
avg 5h 51m · Newark Liberty → Vancouver
KEWR → KFLL
32
avg 2h 52m · Newark Liberty → Fort Lauderdale Hollywood
KCLE → KEWR
1
avg 1h 12m · Cleveland Hopkins → Newark Liberty
KDEN → KBWI
1
avg 4h 11m · Denver → Baltimore/Washington International Thurgood Marshall
KDEN → KMDT
1
avg 4h 47m · Denver → Harrisburg
KDEN → KCLE
1
avg 3h 33m · Denver → Cleveland Hopkins
KIAH → KEWR
1
avg 8h 48m · George Bush Intercontinental Houston → Newark Liberty

Aircraft types

Equipment used on this number

3
B739 BOEING Boeing 737-900
87
B39M BOEING Boeing 737 MAX 9
62
A21N AIRBUS Airbus A321 Neo
39

Safety profile

Flagged flights · last 90 days

Go-arounds
1
Unstable approach
1
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 UAL1423

30
N17417BOEING Boeing 737 MAX 9
→
08/20/2026
3h 5m
No alerts
Replay Analysis
N77575BOEING Boeing 737 MAX 9
→
08/18/2026
2h 56m
No alerts
Replay Analysis
N17593BOEING Boeing 737 MAX 9
→
08/18/2026
3h 18m
No alerts
Replay Analysis
N17593BOEING Boeing 737 MAX 9
→
08/17/2026
6h 5m
No alerts
Replay Analysis
N17593BOEING Boeing 737 MAX 9
→
08/17/2026
2h 46m
No alerts
Replay Analysis
N37541BOEING Boeing 737 MAX 9
→
08/17/2026
2h 55m
No alerts
Replay Analysis
N37541BOEING Boeing 737 MAX 9
→
08/16/2026
2h 52m
No alerts
Replay Analysis
N37541BOEING Boeing 737 MAX 9
→
08/16/2026
5h 48m
No alerts
Replay Analysis
N57466BOEING Boeing 737 MAX 9
→
08/16/2026
3h 26m
No alerts
Replay Analysis
N57466BOEING Boeing 737 MAX 9
→
08/15/2026
2h 14m
No alerts
Replay Analysis
N57466BOEING Boeing 737 MAX 9
→
08/15/2026
5h 40m
No alerts
Replay Analysis
N27439BOEING Boeing 737 MAX 9
→
08/15/2026
3h 12m
No alerts
Replay Analysis
N27439BOEING Boeing 737 MAX 9
→
08/14/2026
6h 1m
No alerts
Replay Analysis
N27439BOEING Boeing 737 MAX 9
→
08/14/2026
2h 49m
No alerts
Replay Analysis
N77581BOEING Boeing 737 MAX 9
→
08/14/2026
3h 15m
No alerts
Replay Analysis
N77581BOEING Boeing 737 MAX 9
→
08/13/2026
2h 19m
No alerts
Replay Analysis
N77581BOEING Boeing 737 MAX 9
→
08/13/2026
5h 34m
No alerts
Replay Analysis
N17443BOEING Boeing 737 MAX 9
→
08/12/2026
3h 42m
No alerts
Replay Analysis
N17443BOEING Boeing 737 MAX 9
→
08/11/2026
2h 3m
No alerts
Replay Analysis
N17443BOEING Boeing 737 MAX 9
→
08/11/2026
5h 45m
No alerts
Replay Analysis
N54552AIRBUS Airbus A321 Neo
→
08/10/2026
4h 14m
No alerts
Replay Analysis
N14530AIRBUS Airbus A321 Neo
→
08/09/2026
8h 47m
No alerts
Replay Analysis
N17421BOEING Boeing 737 MAX 9
→
08/09/2026
3h 24m
No alerts
Replay Analysis
N17421BOEING Boeing 737 MAX 9
→
08/08/2026
2h 48m
No alerts
Replay Analysis
N17421BOEING Boeing 737 MAX 9
→
08/08/2026
6h 13m
No alerts
Replay Analysis
N24542AIRBUS Airbus A321 Neo
→
08/08/2026
3h 45m
No alerts
Replay Analysis
N14576
→
08/07/2026
4h 8m
No alerts
Replay Analysis
N68801BOEING Boeing 737-900
→
08/07/2026
5h 45m
△ Low approach-stability score
Replay Analysis
N34547AIRBUS Airbus A321 Neo
→
08/06/2026
4h 2m
No alerts
Replay Analysis
N75429BOEING Boeing 737-900
→
08/06/2026
2h 39m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window