Flight OddsBUF → ORD United Airlines
United Airlines · Buffalo, NY to Chicago, IL · 1,312 flights, 2025-07-01 to 2026-06-30 · aggregated across 56 flight numbers
On-time arrival
71%
Median delay
0 min
90th percentile
+89 min
Cancellation rate
3%
How on-time is United Airlines from BUF to ORD?
Across every United Airlines flight number on BUF → ORD (1,312 flights, 2025-07-01 to 2026-06-30), 71% arrived within 15 minutes of schedule. Median arrival delay 0 min; the worst 10% ran +89 min or later. 3% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 903 | 71% |
| 16-30 min | 114 | 9% |
| 31-60 min | 85 | 7% |
| 61-120 min | 71 | 6% |
| 2+ hrs | 100 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 118 | 69% | +24 min |
| 2025-08 | 120 | 77% | +22 min |
| 2025-09 | 119 | 79% | +18 min |
| 2025-10 | 120 | 75% | +8 min |
| 2025-11 | 110 | 65% | +63 min |
| 2025-12 | 97 | 57% | +62 min |
| 2026-01 | 84 | 54% | +37 min |
| 2026-02 | 84 | 67% | +47 min |
| 2026-03 | 78 | 62% | +42 min |
| 2026-04 | 104 | 76% | +18 min |
| 2026-05 | 123 | 79% | +24 min |
| 2026-06 | 116 | 81% | +12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 188 | 68% |
| Tue | 188 | 70% |
| Wed | 183 | 70% |
| Thu | 185 | 78% |
| Fri | 187 | 71% |
| Sat | 161 | 76% |
| Sun | 181 | 64% |
UA flight numbers on BUF → ORD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…