Flight OddsUA4353 IAD → BUF
United Airlines · Washington, DC to Buffalo, NY · 50 flights observed, 2025-08-19 to 2026-04-27 · 283 mi
UA4353 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
79%
Median delay
-7 min
90th percentile
+43 min
Cancellation rate
4%
How often is UA4353 on time?
Across 50 flights on IAD → BUF from 2025-08-19 to 2026-04-27, UA4353 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +43 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 38 | 79% |
| 16-30 min | 4 | 8% |
| 31-60 min | 1 | 2% |
| 61-120 min | 2 | 4% |
| 2+ hrs | 3 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 9 | 67% | +76 min |
| 2025-09 | 12 | 100% | -15 min |
| 2026-03 | 23 | 70% | +56 min |
| 2026-04 | 4 | 100% | 0 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 88% |
| Tue | 5 | 100% |
| Wed | 3 | 33% |
| Thu | 7 | 86% |
| Fri | 8 | 75% |
| Sat | 9 | 89% |
| Sun | 8 | 63% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…