Flight OddsWN3437 STL → BWI
Southwest Airlines · St. Louis, MO to Baltimore, MD · 35 flights observed, 2025-07-01 to 2025-08-04 · 738 mi
WN3437 covers more than one route in the data window — the stats below are for STL → BWI, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
52%
Median delay
+11 min
90th percentile
+178 min
Cancellation rate
6%
How often is WN3437 on time?
Across 35 flights on STL → BWI from 2025-07-01 to 2025-08-04, WN3437 arrived within 15 minutes of schedule 52% of the time. The median arrival delay was +11 min, and the worst 10% of flights arrived +178 min or later. 6% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 17 | 52% |
| 16-30 min | 3 | 9% |
| 31-60 min | 5 | 15% |
| 61-120 min | 2 | 6% |
| 2+ hrs | 6 | 18% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 52% | +57 min |
| 2025-08 | 4 | 50% | +22 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 40% |
| Tue | 5 | 60% |
| Wed | 5 | 20% |
| Thu | 4 | 50% |
| Fri | 5 | 80% |
| Sat | 5 | 60% |
| 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…