Flight OddsWN921 DEN → DTW
Southwest Airlines · Denver, CO to Detroit, MI · 42 flights observed, 2025-08-05 to 2025-10-01 · 1,123 mi
WN921 covers more than one route in the data window — the stats below are for DEN → DTW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
43%
Median delay
+21 min
90th percentile
+91 min
Cancellation rate
0%
How often is WN921 on time?
Across 42 flights on DEN → DTW from 2025-08-05 to 2025-10-01, WN921 arrived within 15 minutes of schedule 43% of the time. The median arrival delay was +21 min, and the worst 10% of flights arrived +91 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 18 | 43% |
| 16-30 min | 5 | 12% |
| 31-60 min | 10 | 24% |
| 61-120 min | 8 | 19% |
| 2+ hrs | 1 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 19 | 37% | +44 min |
| 2025-09 | 22 | 45% | +25 min |
| 2025-10 | 1 | 100% | -17 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 13% |
| Tue | 9 | 67% |
| Wed | 9 | 89% |
| Thu | 8 | 13% |
| Fri | 8 | 25% |
| Sat | No data | — |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…