Flight OddsWN4378 SAN → BWI
Southwest Airlines · San Diego, CA to Baltimore, MD · 35 flights observed, 2025-07-01 to 2025-08-04 · 2,295 mi
WN4378 covers more than one route in the data window — the stats below are for SAN → BWI, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
83%
Median delay
-8 min
90th percentile
+27 min
Cancellation rate
0%
How often is WN4378 on time?
Across 35 flights on SAN → BWI from 2025-07-01 to 2025-08-04, WN4378 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +27 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 | 29 | 83% |
| 16-30 min | 3 | 9% |
| 31-60 min | 2 | 6% |
| 61-120 min | 1 | 3% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 81% | +0 min |
| 2025-08 | 4 | 100% | -15 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 80% |
| Tue | 5 | 100% |
| Wed | 5 | 60% |
| Thu | 5 | 80% |
| Fri | 5 | 80% |
| Sat | 5 | 100% |
| 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…