Flight OddsUA630 BUF → ORD
United Airlines · Buffalo, NY to Chicago, IL · 72 flights observed, 2025-07-01 to 2025-10-24 · 474 mi
UA630 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
34%
Median delay
+24 min
90th percentile
+190 min
Cancellation rate
1%
How often is UA630 on time?
Across 72 flights on BUF → ORD from 2025-07-01 to 2025-10-24, UA630 arrived within 15 minutes of schedule 34% of the time. The median arrival delay was +24 min, and the worst 10% of flights arrived +190 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 | 24 | 34% |
| 16-30 min | 23 | 32% |
| 31-60 min | 8 | 11% |
| 61-120 min | 6 | 8% |
| 2+ hrs | 10 | 14% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 27 | 22% | +91 min |
| 2025-08 | 18 | 39% | +128 min |
| 2025-09 | 5 | 80% | +1 min |
| 2025-10 | 21 | 33% | +25 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 11 | 9% |
| Tue | 11 | 36% |
| Wed | 11 | 27% |
| Thu | 11 | 64% |
| Fri | 11 | 45% |
| Sat | 7 | 29% |
| Sun | 9 | 22% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…