Flight OddsWN4251 SFO → DEN
Southwest Airlines · San Francisco, CA to Denver, CO · 60 flights observed, 2025-11-02 to 2026-01-05 · 967 mi
WN4251 covers more than one route in the data window — the stats below are for SFO → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
50%
Median delay
+16 min
90th percentile
+89 min
Cancellation rate
0%
How often is WN4251 on time?
Across 60 flights on SFO → DEN from 2025-11-02 to 2026-01-05, WN4251 arrived within 15 minutes of schedule 50% of the time. The median arrival delay was +16 min, and the worst 10% of flights arrived +89 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 | 30 | 50% |
| 16-30 min | 4 | 7% |
| 31-60 min | 11 | 18% |
| 61-120 min | 10 | 17% |
| 2+ hrs | 5 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-11 | 26 | 46% | +27 min |
| 2025-12 | 29 | 62% | +35 min |
| 2026-01 | 5 | 0% | +116 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 10 | 50% |
| Tue | 9 | 78% |
| Wed | 9 | 89% |
| Thu | 8 | 38% |
| Fri | 9 | 11% |
| Sat | 5 | 60% |
| Sun | 10 | 30% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…