Flight OddsSouthwest Airlines · San Diego, CA to San Francisco, CA · 47 flights observed, 2026-01-06 to 2026-03-04 · 447 mi
WN1438 covers more than one route in the data window — the stats below are for SAN → SFO, the one it has flown most recently. The others are linked under “Other routes”.
How often is WN1438 on time?
Across 47 flights on SAN → SFO from 2026-01-06 to 2026-03-04, WN1438 arrived within 15 minutes of schedule 85% of the time. The median arrival delay was -14 min, and the worst 10% of flights arrived +29 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 | 40 | 85% |
| 16-30 min | 2 | 4% |
| 31-60 min | 3 | 6% |
| 61-120 min | 2 | 4% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 26 | 92% | -14 min |
| 2026-02 | 18 | 78% | +1 min |
| 2026-03 | 3 | 67% | +10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 71% |
| Tue | 9 | 89% |
| Wed | 9 | 89% |
| Thu | 6 | 83% |
| Fri | 5 | 80% |
| Sat | 5 | 100% |
| Sun | 6 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…