Flight OddsWN4478 PHX → SFO
Southwest Airlines · Phoenix, AZ to San Francisco, CA · 5 flights observed, 2026-03-08 to 2026-04-05 · 651 mi
WN4478 covers more than one route in the data window — the stats below are for PHX → SFO, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
50%
Median delay
+16 min
90th percentile
+31 min
Cancellation rate
20%
How often is WN4478 on time?
Across 5 flights on PHX → SFO from 2026-03-08 to 2026-04-05, WN4478 arrived within 15 minutes of schedule 50% of the time. The median arrival delay was +16 min, and the worst 10% of flights arrived +31 min or later. 20% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 2 | 50% |
| 16-30 min | 1 | 25% |
| 31-60 min | 1 | 25% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 3 | 33% | +16 min |
| 2026-04 | 1 | 100% | +15 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| Sat | No data | — |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…