Flight OddsWN873 BOS → STL
Southwest Airlines · Boston, MA to St. Louis, MO · 24 flights observed, 2025-08-07 to 2025-09-29 · 1,047 mi
WN873 covers more than one route in the data window — the stats below are for BOS → STL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
54%
Median delay
+15 min
90th percentile
+37 min
Cancellation rate
0%
How often is WN873 on time?
Across 24 flights on BOS → STL from 2025-08-07 to 2025-09-29, WN873 arrived within 15 minutes of schedule 54% of the time. The median arrival delay was +15 min, and the worst 10% of flights arrived +37 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 | 13 | 54% |
| 16-30 min | 5 | 21% |
| 31-60 min | 5 | 21% |
| 61-120 min | 1 | 4% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 11 | 64% | +11 min |
| 2025-09 | 13 | 46% | +23 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 63% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 8 | 38% |
| Fri | 8 | 63% |
| Sat | No data | — |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…