Flight OddsDEN → BUF Southwest Airlines
Southwest Airlines · Denver, CO to Buffalo, NY · 259 flights, 2025-07-01 to 2026-06-30 · aggregated across 23 flight numbers
On-time arrival
62%
Median delay
+7 min
90th percentile
+60 min
Cancellation rate
1%
How on-time is Southwest Airlines from DEN to BUF?
Across every Southwest Airlines flight number on DEN → BUF (259 flights, 2025-07-01 to 2026-06-30), 62% arrived within 15 minutes of schedule. Median arrival delay +7 min; the worst 10% ran +60 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 158 | 62% |
| 16-30 min | 34 | 13% |
| 31-60 min | 39 | 15% |
| 61-120 min | 18 | 7% |
| 2+ hrs | 7 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 38 | 45% | +32 min |
| 2025-08 | 36 | 44% | +33 min |
| 2025-09 | 34 | 62% | +18 min |
| 2025-10 | 30 | 80% | +8 min |
| 2025-11 | 22 | 77% | +2 min |
| 2025-12 | 19 | 63% | +22 min |
| 2026-01 | 14 | 79% | +3 min |
| 2026-02 | 18 | 78% | +3 min |
| 2026-03 | 2 | 100% | -21 min |
| 2026-04 | 3 | 67% | +52 min |
| 2026-05 | 5 | 60% | +12 min |
| 2026-06 | 35 | 54% | +21 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 31 | 48% |
| Tue | 25 | 76% |
| Wed | 22 | 73% |
| Thu | 30 | 60% |
| Fri | 34 | 56% |
| Sat | 69 | 59% |
| Sun | 45 | 67% |
WN flight numbers on DEN → BUF
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…