UAL540 is operated by UMB BANK NA TRUSTEE between Denver International Airport (KDEN) and San Diego International Airport (KSAN). The flight is most often flown by a AIRBUS Airbus A321 Neo. Typical block time is 2h 51m. SkyMeter has observed 67 legs of this flight number via ADS-B.

✈
FLIGHTS
67
last 90 days
⏱
AVG DURATION
2h 51m
tracked time
📅
SERVICE PERIOD
04/17/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
13 / 5
city pairs · airframes
⚠
INCIDENT RATE
7.5%
5 flagged

Routes flown

By count · last 90 days

7
KDEN → KSAN
28
avg 2h 23m · Denver → San Diego
KSFO → KDEN
10
avg 2h 41m · San Francisco → Denver
KRDU → KSFO
9
avg 5h 19m · Raleigh Durham → San Francisco
KPNS → KDEN
5
avg 2h 52m · Pensacola → Denver
FD47 → KDEN
4
avg 3h 9m · Gulf Breeze Hospital Heliport → Denver
KDEN → KNKX
1
avg 2h 0m · Denver → Miramar Marine Corps Air Station - Mitscher Field
9FD1 → KDEN
1
avg 2h 54m · Sacred Heart Hospital Heliport → Denver

Aircraft types

Equipment used on this number

5
A21N AIRBUS Airbus A321 Neo
41
B38M BOEING Boeing 737 MAX 8
29
B738 BOEING Boeing 737-800
3
B739 BOEING Boeing 737-900
1
B39M BOEING Boeing 737 MAX 9
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
5
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 UAL540

30
N37295BOEING Boeing 737 MAX 8
→
06/03/2026
5h 27m
No alerts
Replay Analysis
N24526AIRBUS Airbus A321 Neo
→
06/03/2026
2h 28m
No alerts
Replay Analysis
N34535AIRBUS Airbus A321 Neo
→
06/02/2026
2h 39m
No alerts
Replay Analysis
N54570AIRBUS Airbus A321 Neo
→
06/02/2026
2h 45m
No alerts
Replay Analysis
N44522AIRBUS Airbus A321 Neo
→
06/01/2026
2h 43m
No alerts
Replay Analysis
N27267BOEING Boeing 737 MAX 8
→
06/01/2026
5h 14m
No alerts
Replay Analysis
N14549AIRBUS Airbus A321 Neo
→
06/01/2026
2h 24m
No alerts
Replay Analysis
N54552AIRBUS Airbus A321 Neo
→
05/31/2026
2h 36m
△ Unstable
Replay Analysis
N37308BOEING Boeing 737 MAX 8
→
05/31/2026
5h 27m
No alerts
Replay Analysis
N14504AIRBUS Airbus A321 Neo
→
05/31/2026
2h 12m
No alerts
Replay Analysis
N14517AIRBUS Airbus A321 Neo
→
05/29/2026
2h 41m
No alerts
Replay Analysis
N17341BOEING Boeing 737 MAX 8
→
05/29/2026
4h 44m
No alerts
Replay Analysis
N14544AIRBUS Airbus A321 Neo
→
05/29/2026
55m
No alerts
Replay Analysis
N14544AIRBUS Airbus A321 Neo
→
05/28/2026
1h 56m
No alerts
Replay Analysis
N14544AIRBUS Airbus A321 Neo
→
05/28/2026
2h 52m
No alerts
Replay Analysis
N47345BOEING Boeing 737 MAX 8
→
05/28/2026
5h 21m
No alerts
Replay Analysis
N44501AIRBUS Airbus A321 Neo
→
05/28/2026
2h 19m
No alerts
Replay Analysis
N17337BOEING Boeing 737 MAX 8
→
05/27/2026
5h 17m
No alerts
Replay Analysis
N14541AIRBUS Airbus A321 Neo
→
05/26/2026
2h 33m
No alerts
Replay Analysis
N54538AIRBUS Airbus A321 Neo
→
05/26/2026
2h 21m
No alerts
Replay Analysis
N14564AIRBUS Airbus A321 Neo
→
05/25/2026
2h 35m
No alerts
Replay Analysis
N17254BOEING Boeing 737 MAX 8
→
05/25/2026
5h 12m
No alerts
Replay Analysis
N14533AIRBUS Airbus A321 Neo
→
05/25/2026
2h 12m
No alerts
Replay Analysis
N14527AIRBUS Airbus A321 Neo
→
05/24/2026
2h 37m
No alerts
Replay Analysis
N17301BOEING Boeing 737 MAX 8
→
05/24/2026
5h 16m
No alerts
Replay Analysis
N44522AIRBUS Airbus A321 Neo
→
05/24/2026
2h 13m
No alerts
Replay Analysis
N14511AIRBUS Airbus A321 Neo
→
05/23/2026
2h 49m
△ Unstable
Replay Analysis
N87531BOEING Boeing 737-800
→
05/23/2026
5h 22m
No alerts
Replay Analysis
N54558AIRBUS Airbus A321 Neo
→
05/23/2026
2h 30m
No alerts
Replay Analysis
N14529AIRBUS Airbus A321 Neo
→
05/22/2026
2h 31m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window