Flight OddsWN3521 SMF → DEN
Southwest Airlines · Sacramento, CA to Denver, CO · 5 flights observed, 2025-07-06 to 2025-08-03 · 909 mi
WN3521 covers more than one route in the data window — the stats below are for SMF → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
40%
Median delay
+28 min
90th percentile
+88 min
Cancellation rate
0%
How often is WN3521 on time?
Across 5 flights on SMF → DEN from 2025-07-06 to 2025-08-03, WN3521 arrived within 15 minutes of schedule 40% of the time. The median arrival delay was +28 min, and the worst 10% of flights arrived +88 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 | 2 | 40% |
| 16-30 min | 1 | 20% |
| 31-60 min | 1 | 20% |
| 61-120 min | 1 | 20% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 4 | 25% | +47 min |
| 2025-08 | 1 | 100% | 0 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| Sat | No data | — |
| Sun | 5 | 40% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…