UAL2309

UNITED AIRLINES INC · DEN → SAN

UAL2309 is operated by UNITED AIRLINES INC between Denver International Airport (KDEN) and San Diego International Airport (KSAN). The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 1h 52m. SkyMeter has observed 178 legs of this flight number via ADS-B.

✈
FLIGHTS
178
last 90 days
⏱
AVG DURATION
1h 52m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 8/12/2026
first → last seen
🗺
ROUTES / TYPES
9 / 4
city pairs · airframes
⚠
INCIDENT RATE
1.1%
2 flagged

Routes flown

By count · last 90 days

4
KDEN → KSAN
81
avg 2h 10m · Denver → San Diego
KSAN → KSFO
70
avg 1h 38m · San Diego → San Francisco
KNZY → KSFO
2
avg 1h 43m · North Island Naval Air Station-Halsey Field → San Francisco
US-2553 → KSFO
1
avg 1h 36m · Speer → San Francisco

Aircraft types

Equipment used on this number

4
B39M BOEING Boeing 737 MAX 9
88
B738 BOEING Boeing 737-800
72
B739 BOEING Boeing 737-900
14
B38M BOEING Boeing 737 MAX 8
4

Safety profile

Flagged flights · last 90 days

Go-arounds
2
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 UAL2309

30
N76504BOEING Boeing 737-800
→
8/12/2026
1h 6m
No alerts
Replay Analysis
N77537BOEING Boeing 737-800
→
8/11/2026
1h 53m
No alerts
Replay Analysis
N77552BOEING Boeing 737 MAX 9
→
8/11/2026
2h 2m
No alerts
Replay Analysis
N33266BOEING Boeing 737-800
→
8/10/2026
1h 35m
No alerts
Replay Analysis
N38467BOEING Boeing 737-900
→
8/10/2026
2h 15m
No alerts
Replay Analysis
N36272BOEING Boeing 737-800
→
8/9/2026
1h 29m
No alerts
Replay Analysis
N36272BOEING Boeing 737-800
→
8/8/2026
1h 21m
No alerts
Replay Analysis
N77578BOEING Boeing 737 MAX 9
→
8/8/2026
2h 7m
No alerts
Replay Analysis
N77295BOEING Boeing 737-800
→
8/7/2026
1h 15m
No alerts
Replay Analysis
N17443BOEING Boeing 737 MAX 9
→
8/7/2026
2h 13m
No alerts
Replay Analysis
N73276BOEING Boeing 737-800
→
8/6/2026
1h 23m
No alerts
Replay Analysis
N77590BOEING Boeing 737 MAX 9
→
8/6/2026
1h 54m
No alerts
Replay Analysis
N73276BOEING Boeing 737-800
→
8/5/2026
1h 40m
No alerts
Replay Analysis
N17550BOEING Boeing 737 MAX 9
→
8/5/2026
2h 7m
No alerts
Replay Analysis
N24202BOEING Boeing 737-800
→
8/4/2026
1h 37m
No alerts
Replay Analysis
N37551BOEING Boeing 737 MAX 9
→
8/4/2026
2h 2m
No alerts
Replay Analysis
N35204BOEING Boeing 737-800
→
8/3/2026
1h 43m
No alerts
Replay Analysis
N17413BOEING Boeing 737 MAX 9
→
8/3/2026
2h 18m
No alerts
Replay Analysis
N76288BOEING Boeing 737-800
→
8/2/2026
1h 48m
No alerts
Replay Analysis
N17428BOEING Boeing 737 MAX 9
→
8/2/2026
2h 24m
No alerts
Replay Analysis
N97424BOEING Boeing 737 MAX 9
→
8/1/2026
1h 52m
No alerts
Replay Analysis
N76508BOEING Boeing 737-800
→
7/31/2026
1h 45m
No alerts
Replay Analysis
N27546BOEING Boeing 737 MAX 9
→
7/31/2026
2h 9m
No alerts
Replay Analysis
N76515BOEING Boeing 737-800
→
7/30/2026
1h 17m
No alerts
Replay Analysis
N77585BOEING Boeing 737 MAX 9
→
7/30/2026
2h 22m
No alerts
Replay Analysis
N54241BOEING Boeing 737-800
→
7/29/2026
2h 0m
No alerts
Replay Analysis
N27586BOEING Boeing 737 MAX 9
→
7/29/2026
2h 6m
No alerts
Replay Analysis
N77258BOEING Boeing 737-800
→
7/28/2026
1h 21m
No alerts
Replay Analysis
N47533BOEING Boeing 737 MAX 9
→
7/28/2026
2h 8m
No alerts
Replay Analysis
N37277BOEING Boeing 737-800
→
7/27/2026
1h 31m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window