Flight OddsUA4823 IAD → BUF
United Airlines · Washington, DC to Buffalo, NY · 241 flights observed, 2025-07-01 to 2026-06-30 · 283 mi
UA4823 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
75%
Median delay
-3 min
90th percentile
+78 min
Cancellation rate
5%
How often is UA4823 on time?
Across 241 flights on IAD → BUF from 2025-07-01 to 2026-06-30, UA4823 arrived within 15 minutes of schedule 75% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +78 min or later. 5% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 171 | 75% |
| 16-30 min | 14 | 6% |
| 31-60 min | 16 | 7% |
| 61-120 min | 10 | 4% |
| 2+ hrs | 18 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 25 | 48% | +41 min |
| 2025-08 | 17 | 82% | +16 min |
| 2025-10 | 4 | 75% | +37 min |
| 2025-11 | 21 | 95% | -8 min |
| 2025-12 | 14 | 57% | +45 min |
| 2026-01 | 29 | 76% | +16 min |
| 2026-02 | 10 | 70% | +34 min |
| 2026-03 | 26 | 69% | +10 min |
| 2026-04 | 29 | 86% | +31 min |
| 2026-05 | 29 | 72% | +8 min |
| 2026-06 | 25 | 84% | -7 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 31 | 87% |
| Tue | 36 | 72% |
| Wed | 34 | 65% |
| Thu | 34 | 82% |
| Fri | 35 | 74% |
| Sat | 29 | 76% |
| Sun | 30 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…