UAL1537

UNITED AIRLINES INC · PHL → DEN

UAL1537 is operated by UNITED AIRLINES INC between Philadelphia International Airport (KPHL) and Denver International Airport (KDEN). The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 1h 53m. SkyMeter has observed 34 legs of this flight number via ADS-B.

✈
FLIGHTS
34
last 90 days
⏱
AVG DURATION
1h 53m
tracked time
📅
SERVICE PERIOD
04/17/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
9 / 4
city pairs · airframes
⚠
INCIDENT RATE
11.8%
4 flagged

Routes flown

By count · last 90 days

5
KORD → KRSW
4
avg 2h 30m · Chicago O'Hare → Southwest Florida
KPHL → KDEN
4
avg 3h 45m · Philadelphia → Denver
04PA → KDEN
3
avg 3h 43m · S & C Distribution Center Heliport → Denver
KDEN → KJAC
3
avg 1h 30m · Denver → Jackson Hole
KORD → KFMY
1
avg 2h 11m · Chicago O'Hare → Page Field

Aircraft types

Equipment used on this number

4
B39M BOEING Boeing 737 MAX 9
14
A320 AIRBUS Airbus A320
11
B738 BOEING Boeing 737-800
8
A319 AIRBUS Airbus A319
5

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
4
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 UAL1537

30
N435UAAIRBUS Airbus A320
→
06/03/2026
58m
No alerts
Replay Analysis
N447UAAIRBUS Airbus A320
→
06/02/2026
1h 4m
No alerts
Replay Analysis
N462UAAIRBUS Airbus A320
→
06/01/2026
1h 24m
No alerts
Replay Analysis
N76516BOEING Boeing 737-800
→
06/01/2026
3h 39m
No alerts
Replay Analysis
N492UAAIRBUS Airbus A320
→
05/31/2026
57m
No alerts
Replay Analysis
N37298BOEING Boeing 737-800
→
05/31/2026
3h 48m
No alerts
Replay Analysis
N497UAAIRBUS Airbus A320
→
05/29/2026
57m
No alerts
Replay Analysis
N77258BOEING Boeing 737-800
→
05/29/2026
1h 24m
No alerts
Replay Analysis
N432UAAIRBUS Airbus A320
→
05/28/2026
1h 9m
No alerts
Replay Analysis
N76505BOEING Boeing 737-800
→
05/28/2026
3h 56m
No alerts
Replay Analysis
N434UAAIRBUS Airbus A320
→
05/27/2026
1h 10m
No alerts
Replay Analysis
N474UAAIRBUS Airbus A320
→
05/26/2026
1h 2m
No alerts
Replay Analysis
N451UAAIRBUS Airbus A320
→
05/25/2026
1h 15m
No alerts
Replay Analysis
N79521BOEING Boeing 737-800
→
05/25/2026
3h 36m
No alerts
Replay Analysis
N17244BOEING Boeing 737-800
→
05/24/2026
3h 42m
No alerts
Replay Analysis
N460UAAIRBUS Airbus A320
→
05/23/2026
1h 16m
No alerts
Replay Analysis
N14250BOEING Boeing 737-800
→
05/23/2026
3h 43m
No alerts
Replay Analysis
N475UAAIRBUS Airbus A320
→
05/21/2026
1h 23m
△ Unstable
Replay Analysis
N77535BOEING Boeing 737-800
→
05/21/2026
3h 42m
No alerts
Replay Analysis
N821UAAIRBUS Airbus A319
→
05/18/2026
1h 21m
△ Unstable
Replay Analysis
N832UAAIRBUS Airbus A319
→
05/17/2026
1h 46m
△ Unstable
Replay Analysis
N838UAAIRBUS Airbus A319
→
05/15/2026
1h 3m
No alerts
Replay Analysis
N853UAAIRBUS Airbus A319
→
05/14/2026
1h 13m
No alerts
Replay Analysis
N838UAAIRBUS Airbus A319
→
05/13/2026
1h 13m
No alerts
Replay Analysis
N17413BOEING Boeing 737 MAX 9
→
04/25/2026
43m
No alerts
Replay Analysis
N37561BOEING Boeing 737 MAX 9
→
04/25/2026
2h 31m
No alerts
Replay Analysis
N17427BOEING Boeing 737 MAX 9
→
04/24/2026
2h 32m
No alerts
Replay Analysis
N27520BOEING Boeing 737 MAX 9
→
04/23/2026
1h 55m
No alerts
Replay Analysis
N17436BOEING Boeing 737 MAX 9
→
04/21/2026
10m
No alerts
Replay Analysis
N17417BOEING Boeing 737 MAX 9
→
04/21/2026
2h 5m
△ Unstable
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window