Flight OddsWN621 BWI → GRR
Southwest Airlines · Baltimore, MD to Grand Rapids, MI · 9 flights observed, 2025-10-04 to 2025-11-01 · 528 mi
WN621 covers more than one route in the data window — the stats below are for BWI → GRR, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-9 min
90th percentile
+25 min
Cancellation rate
0%
How often is WN621 on time?
Across 9 flights on BWI → GRR from 2025-10-04 to 2025-11-01, WN621 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +25 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 | 7 | 78% |
| 16-30 min | 1 | 11% |
| 31-60 min | 1 | 11% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 8 | 88% | -8 min |
| 2025-11 | 1 | 0% | +47 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| Sat | 5 | 80% |
| Sun | 4 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…