Flight OddsUA4327 IAD → DAY
United Airlines · Washington, DC to Dayton, OH · 182 flights observed, 2025-07-01 to 2026-06-24 · 367 mi
UA4327 covers more than one route in the data window — the stats below are for IAD → DAY, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
89%
Median delay
-9 min
90th percentile
+17 min
Cancellation rate
1%
How often is UA4327 on time?
Across 182 flights on IAD → DAY from 2025-07-01 to 2026-06-24, UA4327 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +17 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 161 | 89% |
| 16-30 min | 10 | 6% |
| 31-60 min | 6 | 3% |
| 61-120 min | 3 | 2% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 87% | -4 min |
| 2025-08 | 28 | 82% | +6 min |
| 2025-09 | 30 | 87% | -6 min |
| 2025-10 | 25 | 88% | 0 min |
| 2026-03 | 2 | 100% | -12 min |
| 2026-04 | 17 | 88% | -8 min |
| 2026-05 | 24 | 96% | -5 min |
| 2026-06 | 24 | 96% | -2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 29 | 86% |
| Tue | 21 | 86% |
| Wed | 20 | 90% |
| Thu | 24 | 92% |
| Fri | 29 | 90% |
| Sat | 29 | 90% |
| Sun | 29 | 90% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…