Flight OddsWN3998 DCA → STL
Southwest Airlines · Washington, DC to St. Louis, MO · 50 flights observed, 2025-08-05 to 2025-10-01 · 719 mi
WN3998 covers more than one route in the data window — the stats below are for DCA → STL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
90%
Median delay
-1 min
90th percentile
+14 min
Cancellation rate
0%
How often is WN3998 on time?
Across 50 flights on DCA → STL from 2025-08-05 to 2025-10-01, WN3998 arrived within 15 minutes of schedule 90% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +14 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 | 45 | 90% |
| 16-30 min | 4 | 8% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 2% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 23 | 87% | +6 min |
| 2025-09 | 26 | 92% | -1 min |
| 2025-10 | 1 | 100% | -10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 100% |
| Tue | 9 | 100% |
| Wed | 9 | 78% |
| Thu | 8 | 100% |
| Fri | 8 | 88% |
| Sat | No data | — |
| Sun | 8 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…