Flight OddsSouthwest Airlines · San Diego, CA to San Francisco, CA · 42 flights observed, 2025-08-05 to 2025-10-01 · 447 mi
WN1721 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 WN1721 on time?
Across 42 flights on SAN → SFO from 2025-08-05 to 2025-10-01, WN1721 arrived within 15 minutes of schedule 37% of the time. The median arrival delay was +32 min, and the worst 10% of flights arrived +106 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 15 | 37% |
| 16-30 min | 5 | 12% |
| 31-60 min | 10 | 24% |
| 61-120 min | 10 | 24% |
| 2+ hrs | 1 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 19 | 26% | +41 min |
| 2025-09 | 21 | 48% | +37 min |
| 2025-10 | 1 | 0% | +68 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 50% |
| Tue | 9 | 56% |
| Wed | 8 | 38% |
| Thu | 8 | 0% |
| Fri | 8 | 38% |
| Sat | No data | — |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…