Flight OddsWN1521 DAL → SMF
Southwest Airlines · Dallas, TX to Sacramento, CA · 26 flights observed, 2026-04-07 to 2026-06-03 · 1,442 mi
WN1521 covers more than one route in the data window — the stats below are for DAL → SMF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
52%
Median delay
+15 min
90th percentile
+77 min
Cancellation rate
4%
How often is WN1521 on time?
Across 26 flights on DAL → SMF from 2026-04-07 to 2026-06-03, WN1521 arrived within 15 minutes of schedule 52% of the time. The median arrival delay was +15 min, and the worst 10% of flights arrived +77 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 13 | 52% |
| 16-30 min | 1 | 4% |
| 31-60 min | 7 | 28% |
| 61-120 min | 2 | 8% |
| 2+ hrs | 2 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 11 | 82% | +3 min |
| 2026-05 | 12 | 25% | +49 min |
| 2026-06 | 2 | 50% | +18 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | 9 | 44% |
| Wed | 9 | 89% |
| Thu | No data | — |
| Fri | No data | — |
| Sat | No data | — |
| Sun | 7 | 14% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…