Flight OddsSouthwest Airlines · St. Louis, MO to Sacramento, CA · 64 flights observed, 2025-11-02 to 2026-01-05 · 1,679 mi
WN4379 covers more than one route in the data window — the stats below are for STL → SMF, the one it has flown most recently. The others are linked under “Other routes”.
How often is WN4379 on time?
Across 64 flights on STL → SMF from 2025-11-02 to 2026-01-05, WN4379 arrived within 15 minutes of schedule 69% of the time. The median arrival delay was +6 min, and the worst 10% of flights arrived +34 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 | 44 | 69% |
| 16-30 min | 11 | 17% |
| 31-60 min | 6 | 9% |
| 61-120 min | 1 | 2% |
| 2+ hrs | 2 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-11 | 28 | 75% | +5 min |
| 2025-12 | 31 | 65% | +22 min |
| 2026-01 | 5 | 60% | +18 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 10 | 80% |
| Tue | 9 | 89% |
| Wed | 9 | 56% |
| Thu | 8 | 63% |
| Fri | 9 | 67% |
| Sat | 9 | 67% |
| Sun | 10 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…