Flight OddsUA4935 BUF → IAD
United Airlines · Buffalo, NY to Washington, DC · 119 flights observed, 2025-09-25 to 2026-04-28 · 283 mi
On-time arrival
90%
Median delay
-9 min
90th percentile
+13 min
Cancellation rate
3%
How often is UA4935 on time?
Across 119 flights on BUF → IAD from 2025-09-25 to 2026-04-28, UA4935 arrived within 15 minutes of schedule 90% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +13 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 104 | 90% |
| 16-30 min | 1 | 1% |
| 31-60 min | 5 | 4% |
| 61-120 min | 1 | 1% |
| 2+ hrs | 4 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 6 | 100% | -5 min |
| 2025-10 | 25 | 100% | -8 min |
| 2025-12 | 2 | 50% | +10 min |
| 2026-01 | 25 | 84% | +25 min |
| 2026-02 | 11 | 91% | -3 min |
| 2026-03 | 24 | 92% | +1 min |
| 2026-04 | 22 | 86% | +13 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 15 | 73% |
| Tue | 17 | 82% |
| Wed | 13 | 92% |
| Thu | 19 | 100% |
| Fri | 18 | 100% |
| Sat | 18 | 89% |
| Sun | 15 | 93% |
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…