Flight OddsUA4537 IAD → BUF
United Airlines · Washington, DC to Buffalo, NY · 10 flights observed, 2025-10-26 to 2025-11-24 · 283 mi
UA4537 covers more than one route in the data window — the stats below are for IAD → BUF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
40%
Median delay
+51 min
90th percentile
+157 min
Cancellation rate
0%
How often is UA4537 on time?
Across 10 flights on IAD → BUF from 2025-10-26 to 2025-11-24, UA4537 arrived within 15 minutes of schedule 40% of the time. The median arrival delay was +51 min, and the worst 10% of flights arrived +157 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 4 | 40% |
| 16-30 min | 0 | 0% |
| 31-60 min | 1 | 10% |
| 61-120 min | 3 | 30% |
| 2+ hrs | 2 | 20% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 2 | 50% | +126 min |
| 2025-11 | 8 | 38% | +55 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 40% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| Sat | No data | — |
| Sun | 5 | 40% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…