Flight OddsUA4291 BUF → IAD
United Airlines · Buffalo, NY to Washington, DC · 284 flights observed, 2025-07-01 to 2026-06-30 · 283 mi
UA4291 covers more than one route in the data window — the stats below are for BUF → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
79%
Median delay
-7 min
90th percentile
+76 min
Cancellation rate
2%
How often is UA4291 on time?
Across 284 flights on BUF → IAD from 2025-07-01 to 2026-06-30, UA4291 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +76 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 218 | 79% |
| 16-30 min | 18 | 6% |
| 31-60 min | 10 | 4% |
| 61-120 min | 10 | 4% |
| 2+ hrs | 21 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 73% | +34 min |
| 2025-08 | 26 | 77% | +12 min |
| 2025-09 | 20 | 90% | +2 min |
| 2025-10 | 27 | 81% | -1 min |
| 2025-11 | 29 | 76% | +2 min |
| 2025-12 | 13 | 69% | +49 min |
| 2026-01 | 28 | 71% | +29 min |
| 2026-02 | 11 | 73% | +34 min |
| 2026-03 | 23 | 74% | +23 min |
| 2026-04 | 26 | 96% | 0 min |
| 2026-05 | 25 | 80% | -4 min |
| 2026-06 | 19 | 79% | +15 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 44 | 82% |
| Tue | 42 | 76% |
| Wed | 45 | 76% |
| Thu | 47 | 85% |
| Fri | 36 | 81% |
| Sat | 26 | 73% |
| Sun | 37 | 76% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…