Flight OddsWN3431 MIA → STL
Southwest Airlines · Miami, FL to St. Louis, MO · 39 flights observed, 2026-04-09 to 2026-06-01 · 1,068 mi
WN3431 covers more than one route in the data window — the stats below are for MIA → STL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
72%
Median delay
+1 min
90th percentile
+81 min
Cancellation rate
0%
How often is WN3431 on time?
Across 39 flights on MIA → STL from 2026-04-09 to 2026-06-01, WN3431 arrived within 15 minutes of schedule 72% of the time. The median arrival delay was +1 min, and the worst 10% of flights arrived +81 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 | 28 | 72% |
| 16-30 min | 2 | 5% |
| 31-60 min | 3 | 8% |
| 61-120 min | 6 | 15% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 16 | 75% | +14 min |
| 2026-05 | 22 | 68% | +15 min |
| 2026-06 | 1 | 100% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 75% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 8 | 63% |
| Fri | 8 | 63% |
| Sat | 8 | 75% |
| Sun | 7 | 86% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…