Flight OddsUA4236 IAD → BUF
United Airlines · Washington, DC to Buffalo, NY · 70 flights observed, 2025-09-25 to 2026-04-27 · 283 mi
UA4236 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
91%
Median delay
-12 min
90th percentile
+10 min
Cancellation rate
0%
How often is UA4236 on time?
Across 70 flights on IAD → BUF from 2025-09-25 to 2026-04-27, UA4236 arrived within 15 minutes of schedule 91% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +10 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 | 64 | 91% |
| 16-30 min | 2 | 3% |
| 31-60 min | 4 | 6% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 6 | 100% | -16 min |
| 2025-10 | 25 | 92% | -10 min |
| 2025-12 | 1 | 0% | +46 min |
| 2026-01 | 2 | 100% | -9 min |
| 2026-03 | 18 | 94% | -10 min |
| 2026-04 | 18 | 89% | -10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 12 | 75% |
| Tue | 5 | 100% |
| Wed | 4 | 100% |
| Thu | 12 | 100% |
| Fri | 13 | 85% |
| Sat | 13 | 92% |
| Sun | 11 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…