Flight OddsWN3421 STL → CMH
Southwest Airlines · St. Louis, MO to Columbus, OH · 34 flights observed, 2025-07-01 to 2025-08-04 · 409 mi
WN3421 covers more than one route in the data window — the stats below are for STL → CMH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
70%
Median delay
+5 min
90th percentile
+54 min
Cancellation rate
0%
How often is WN3421 on time?
Across 34 flights on STL → CMH from 2025-07-01 to 2025-08-04, WN3421 arrived within 15 minutes of schedule 70% of the time. The median arrival delay was +5 min, and the worst 10% of flights arrived +54 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 | 23 | 70% |
| 16-30 min | 4 | 12% |
| 31-60 min | 4 | 12% |
| 61-120 min | 2 | 6% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 69% | +16 min |
| 2025-08 | 4 | 75% | +9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 50% |
| Tue | 5 | 80% |
| Wed | 5 | 100% |
| Thu | 5 | 40% |
| Fri | 4 | 50% |
| Sat | 5 | 100% |
| Sun | 5 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…