Flight OddsUA329 BUF → ORD
United Airlines · Buffalo, NY to Chicago, IL · 86 flights observed, 2025-07-01 to 2025-09-24 · 474 mi
UA329 covers more than one route in the data window — the stats below are for BUF → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
91%
Median delay
-6 min
90th percentile
+15 min
Cancellation rate
1%
How often is UA329 on time?
Across 86 flights on BUF → ORD from 2025-07-01 to 2025-09-24, UA329 arrived within 15 minutes of schedule 91% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +15 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 77 | 91% |
| 16-30 min | 1 | 1% |
| 31-60 min | 1 | 1% |
| 61-120 min | 2 | 2% |
| 2+ hrs | 4 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 90% | +1 min |
| 2025-08 | 30 | 97% | +1 min |
| 2025-09 | 24 | 83% | +41 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 12 | 92% |
| Tue | 13 | 85% |
| Wed | 13 | 85% |
| Thu | 12 | 83% |
| Fri | 12 | 100% |
| Sat | 12 | 92% |
| Sun | 11 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…