Flight OddsWN4534 SAN → STL
Southwest Airlines · San Diego, CA to St. Louis, MO · 25 flights observed, 2026-03-05 to 2026-04-06 · 1,557 mi
WN4534 covers more than one route in the data window — the stats below are for SAN → STL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
76%
Median delay
+3 min
90th percentile
+49 min
Cancellation rate
0%
How often is WN4534 on time?
Across 25 flights on SAN → STL from 2026-03-05 to 2026-04-06, WN4534 arrived within 15 minutes of schedule 76% of the time. The median arrival delay was +3 min, and the worst 10% of flights arrived +49 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 | 19 | 76% |
| 16-30 min | 2 | 8% |
| 31-60 min | 2 | 8% |
| 61-120 min | 2 | 8% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 20 | 75% | +15 min |
| 2026-04 | 5 | 80% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 5 | 100% |
| Fri | 5 | 40% |
| Sat | 5 | 100% |
| Sun | 5 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…