Flight OddsWN3956 SMF → ONT
Southwest Airlines · Sacramento, CA to Ontario, CA · 50 flights observed, 2025-08-05 to 2025-10-01 · 390 mi
WN3956 covers more than one route in the data window — the stats below are for SMF → ONT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
86%
Median delay
-13 min
90th percentile
+20 min
Cancellation rate
0%
How often is WN3956 on time?
Across 50 flights on SMF → ONT from 2025-08-05 to 2025-10-01, WN3956 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -13 min, and the worst 10% of flights arrived +20 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 | 43 | 86% |
| 16-30 min | 4 | 8% |
| 31-60 min | 1 | 2% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 2 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 23 | 87% | -3 min |
| 2025-09 | 26 | 85% | -2 min |
| 2025-10 | 1 | 100% | -13 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 100% |
| Tue | 9 | 67% |
| Wed | 9 | 78% |
| Thu | 8 | 100% |
| Fri | 8 | 88% |
| Sat | No data | — |
| Sun | 8 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…