Flight OddsWN4738 MDW → BUF
Southwest Airlines · Chicago, IL to Buffalo, NY · 25 flights observed, 2025-07-01 to 2025-08-04 · 468 mi
WN4738 covers more than one route in the data window — the stats below are for MDW → BUF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
72%
Median delay
+1 min
90th percentile
+54 min
Cancellation rate
0%
How often is WN4738 on time?
Across 25 flights on MDW → BUF from 2025-07-01 to 2025-08-04, WN4738 arrived within 15 minutes of schedule 72% of the time. The median arrival delay was +1 min, and the worst 10% of flights arrived +54 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 | 18 | 72% |
| 16-30 min | 2 | 8% |
| 31-60 min | 4 | 16% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 23 | 70% | +17 min |
| 2025-08 | 2 | 100% | -6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 80% |
| Tue | 5 | 80% |
| Wed | 5 | 60% |
| Thu | 5 | 60% |
| Fri | 5 | 80% |
| Sat | No data | — |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…