Is UAL1521 delayed?
Service date: · Scheduled departure date (UTC)
Arrived
20 min early
Official source · Updated
Departure
Des Moines
DSM
Actual
Scheduled 14:31
Sep 16
Arrival
Denver
DEN
Actual
Scheduled 10:14
Sep 16
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
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DSMDEN
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 20 min early
DSM → DEN
- 12 min late
DSM → DEN
- <1 min early
DSM → DEN
- 5 min late
DSM → DEN
- 8 min early
DSM → DEN
Flight history and details
Aug 17, 2026 — Sep 16, 2026
- Observed arrivals
- 9
- Arrivals over 15 minutes late
- 1
- Observed cancellations
- 1
- Observed occurrences
- 11
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 16, 2026Arrived | Des Moines | Denver | -20 | |
| Sep 14, 2026Arrived | Des Moines | Denver | 12 | |
| Sep 11, 2026Arrived | Des Moines | Denver | 0 | |
| Sep 10, 2026Arrived | Des Moines | Denver | 5 | |
| Sep 9, 2026Arrived | Des Moines | Denver | -8 | |
| Sep 8, 2026Cancelled | Des Moines | Denver | Not available | Not available |
| Sep 7, 2026Arrived | Des Moines | Denver | -20 | |
| Sep 6, 2026Arrived | Des Moines | Denver | 0 | |
| Sep 5, 2026Arrived | Des Moines | Denver | 9 | |
| Sep 4, 2026Arrived | Des Moines | Denver | 18 |