Flight OddsWN3815 STL → PHX
Southwest Airlines · St. Louis, MO to Phoenix, AZ · 28 flights observed, 2026-01-10 to 2026-03-02 · 1,262 mi
WN3815 covers more than one route in the data window — the stats below are for STL → PHX, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
96%
Median delay
-23 min
90th percentile
+7 min
Cancellation rate
4%
How often is WN3815 on time?
Across 28 flights on STL → PHX from 2026-01-10 to 2026-03-02, WN3815 arrived within 15 minutes of schedule 96% of the time. The median arrival delay was -23 min, and the worst 10% of flights arrived +7 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 26 | 96% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 4% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 8 | 88% | -13 min |
| 2026-02 | 17 | 100% | -16 min |
| 2026-03 | 2 | 100% | -27 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 100% |
| Tue | 1 | 100% |
| Wed | No data | — |
| Thu | 5 | 100% |
| Fri | 5 | 100% |
| Sat | 6 | 83% |
| Sun | 5 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…