Flight OddsWN4128 ONT → BWI
Southwest Airlines · Ontario, CA to Baltimore, MD · 32 flights observed, 2026-03-05 to 2026-04-06 · 2,283 mi
WN4128 covers more than one route in the data window — the stats below are for ONT → BWI, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
75%
Median delay
+4 min
90th percentile
+47 min
Cancellation rate
0%
How often is WN4128 on time?
Across 32 flights on ONT → BWI from 2026-03-05 to 2026-04-06, WN4128 arrived within 15 minutes of schedule 75% of the time. The median arrival delay was +4 min, and the worst 10% of flights arrived +47 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 | 24 | 75% |
| 16-30 min | 4 | 13% |
| 31-60 min | 2 | 6% |
| 61-120 min | 1 | 3% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 26 | 73% | +17 min |
| 2026-04 | 6 | 83% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 80% |
| Tue | 4 | 100% |
| Wed | 4 | 100% |
| Thu | 5 | 40% |
| Fri | 5 | 60% |
| Sat | 4 | 75% |
| Sun | 5 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…