Flight OddsMDW → BUF Southwest Airlines
Southwest Airlines · Chicago, IL to Buffalo, NY · 829 flights, 2025-07-01 to 2026-06-30 · aggregated across 41 flight numbers
On-time arrival
76%
Median delay
-1 min
90th percentile
+43 min
Cancellation rate
1%
How on-time is Southwest Airlines from MDW to BUF?
Across every Southwest Airlines flight number on MDW → BUF (829 flights, 2025-07-01 to 2026-06-30), 76% arrived within 15 minutes of schedule. Median arrival delay -1 min; the worst 10% ran +43 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 617 | 76% |
| 16-30 min | 77 | 9% |
| 31-60 min | 75 | 9% |
| 61-120 min | 33 | 4% |
| 2+ hrs | 15 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 96 | 70% | +13 min |
| 2025-08 | 83 | 75% | +6 min |
| 2025-09 | 82 | 83% | +1 min |
| 2025-10 | 59 | 78% | +6 min |
| 2025-11 | 55 | 78% | +13 min |
| 2025-12 | 59 | 73% | +17 min |
| 2026-01 | 29 | 79% | +0 min |
| 2026-02 | 29 | 66% | +13 min |
| 2026-03 | 74 | 70% | +16 min |
| 2026-04 | 82 | 87% | 0 min |
| 2026-05 | 82 | 83% | +4 min |
| 2026-06 | 87 | 63% | +20 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 127 | 74% |
| Tue | 126 | 80% |
| Wed | 125 | 79% |
| Thu | 127 | 76% |
| Fri | 130 | 73% |
| Sat | 72 | 69% |
| Sun | 110 | 75% |
WN flight numbers on MDW → BUF
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…