Flight OddsWN4321 BWI → ISP
Southwest Airlines · Baltimore, MD to Islip, NY · 27 flights observed, 2026-06-04 to 2026-06-30 · 220 mi
WN4321 covers more than one route in the data window — the stats below are for BWI → ISP, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
65%
Median delay
+9 min
90th percentile
+89 min
Cancellation rate
4%
How often is WN4321 on time?
Across 27 flights on BWI → ISP from 2026-06-04 to 2026-06-30, WN4321 arrived within 15 minutes of schedule 65% of the time. The median arrival delay was +9 min, and the worst 10% of flights arrived +89 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 17 | 65% |
| 16-30 min | 2 | 8% |
| 31-60 min | 2 | 8% |
| 61-120 min | 5 | 19% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-06 | 26 | 65% | +23 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 50% |
| Tue | 4 | 100% |
| Wed | 3 | 67% |
| Thu | 4 | 50% |
| Fri | 4 | 75% |
| Sat | 4 | 25% |
| Sun | 3 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…