Flight OddsWN4309 PHX → STL
Southwest Airlines · Phoenix, AZ to St. Louis, MO · 29 flights observed, 2025-07-01 to 2025-08-04 · 1,262 mi
WN4309 covers more than one route in the data window — the stats below are for PHX → STL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
67%
Median delay
+3 min
90th percentile
+59 min
Cancellation rate
3%
How often is WN4309 on time?
Across 29 flights on PHX → STL from 2025-07-01 to 2025-08-04, WN4309 arrived within 15 minutes of schedule 67% of the time. The median arrival delay was +3 min, and the worst 10% of flights arrived +59 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 18 | 67% |
| 16-30 min | 3 | 11% |
| 31-60 min | 4 | 15% |
| 61-120 min | 2 | 7% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 24 | 67% | +16 min |
| 2025-08 | 3 | 67% | 0 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 40% |
| Tue | 5 | 100% |
| Wed | 5 | 100% |
| Thu | 4 | 25% |
| Fri | 4 | 75% |
| 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…