Flight OddsWN1821 BWI → MIA
Southwest Airlines · Baltimore, MD to Miami, FL · 40 flights observed, 2025-08-07 to 2025-09-29 · 946 mi
WN1821 covers more than one route in the data window — the stats below are for BWI → MIA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
68%
Median delay
+8 min
90th percentile
+39 min
Cancellation rate
0%
How often is WN1821 on time?
Across 40 flights on BWI → MIA from 2025-08-07 to 2025-09-29, WN1821 arrived within 15 minutes of schedule 68% of the time. The median arrival delay was +8 min, and the worst 10% of flights arrived +39 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 | 27 | 68% |
| 16-30 min | 7 | 18% |
| 31-60 min | 4 | 10% |
| 61-120 min | 1 | 3% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 19 | 58% | +13 min |
| 2025-09 | 21 | 76% | +16 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 75% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 8 | 50% |
| Fri | 8 | 75% |
| Sat | 8 | 50% |
| Sun | 8 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…