UAL1521

UNITED AIRLINES INC · DSM → DEN

UAL1521 is operated by UNITED AIRLINES INC between Des Moines International Airport (KDSM) and Denver International Airport (KDEN). The flight is most often flown by a AIRBUS Airbus A319. Typical block time is 1h 31m. SkyMeter has observed 103 legs of this flight number via ADS-B.

✈
FLIGHTS
103
last 90 days
⏱
AVG DURATION
1h 31m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/18/2026
first → last seen
🗺
ROUTES / TYPES
4 / 3
city pairs · airframes
⚠
INCIDENT RATE
1.0%
1 flagged

Routes flown

By count · last 90 days

1
KDSM → KDEN
79
avg 1h 53m · Des Moines → Denver

Aircraft types

Equipment used on this number

3
A319 AIRBUS Airbus A319
89
A320 AIRBUS Airbus A320
13
B738 BOEING Boeing 737-800
1

Safety profile

Flagged flights · last 90 days

Go-arounds
1
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 UAL1521

30
N824UAAIRBUS Airbus A319
→
08/18/2026
2h 19m
No alerts
Replay Analysis
N889UAAIRBUS Airbus A319
→
08/17/2026
2h 11m
No alerts
Replay Analysis
N829UAAIRBUS Airbus A319
→
08/16/2026
2h 16m
No alerts
Replay Analysis
N825UAAIRBUS Airbus A319
→
08/15/2026
1h 42m
No alerts
Replay Analysis
N835UAAIRBUS Airbus A319
→
08/14/2026
1h 39m
No alerts
Replay Analysis
N835UAAIRBUS Airbus A319
→
08/14/2026
10m
No alerts
Replay Analysis
N819UAAIRBUS Airbus A319
→
08/13/2026
1h 54m
No alerts
Replay Analysis
N11206BOEING Boeing 737-800
→
08/11/2026
1h 49m
No alerts
Replay Analysis
N897UAAIRBUS Airbus A319
→
08/10/2026
1h 51m
No alerts
Replay Analysis
N898UAAIRBUS Airbus A319
→
08/08/2026
1h 55m
No alerts
Replay Analysis
N883UAAIRBUS Airbus A319
→
08/07/2026
2h 7m
No alerts
Replay Analysis
N832UAAIRBUS Airbus A319
→
08/06/2026
1h 50m
No alerts
Replay Analysis
N832UAAIRBUS Airbus A319
→
08/06/2026
8m
No alerts
Replay Analysis
N893UAAIRBUS Airbus A319
→
08/05/2026
2h 3m
No alerts
Replay Analysis
N895UAAIRBUS Airbus A319
→
08/04/2026
1h 47m
No alerts
Replay Analysis
N895UAAIRBUS Airbus A319
→
08/04/2026
10m
No alerts
Replay Analysis
N830UAAIRBUS Airbus A319
→
08/03/2026
1h 40m
No alerts
Replay Analysis
N830UAAIRBUS Airbus A319
→
08/03/2026
15m
No alerts
Replay Analysis
N829UAAIRBUS Airbus A319
→
08/02/2026
2h 24m
↻ Go-around
Replay Analysis
N852UAAIRBUS Airbus A319
→
08/01/2026
36m
No alerts
Replay Analysis
N873UAAIRBUS Airbus A319
→
07/31/2026
1h 44m
No alerts
Replay Analysis
N878UAAIRBUS Airbus A319
→
07/30/2026
1h 46m
No alerts
Replay Analysis
N855UAAIRBUS Airbus A319
→
07/29/2026
1h 59m
No alerts
Replay Analysis
N874UAAIRBUS Airbus A319
→
07/28/2026
1h 51m
No alerts
Replay Analysis
N826UAAIRBUS Airbus A319
→
07/27/2026
15m
No alerts
Replay Analysis
N826UAAIRBUS Airbus A319
→
07/27/2026
1h 44m
No alerts
Replay Analysis
N823UAAIRBUS Airbus A319
→
07/26/2026
1h 49m
No alerts
Replay Analysis
N831UAAIRBUS Airbus A319
→
07/25/2026
1h 32m
No alerts
Replay Analysis
N831UAAIRBUS Airbus A319
→
07/25/2026
8m
No alerts
Replay Analysis
N458UAAIRBUS Airbus A320
→
07/24/2026
1h 35m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window