Flight OddsUA4543 IAD → DAY
United Airlines · Washington, DC to Dayton, OH · 28 flights observed, 2025-10-26 to 2025-12-01 · 367 mi
UA4543 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
86%
Median delay
-8 min
90th percentile
+23 min
Cancellation rate
0%
How often is UA4543 on time?
Across 28 flights on IAD → DAY from 2025-10-26 to 2025-12-01, UA4543 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +23 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 | 24 | 86% |
| 16-30 min | 2 | 7% |
| 31-60 min | 0 | 0% |
| 61-120 min | 2 | 7% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 4 | 100% | -12 min |
| 2025-11 | 23 | 87% | -3 min |
| 2025-12 | 1 | 0% | +78 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 80% |
| Tue | 1 | 0% |
| Wed | 1 | 100% |
| Thu | 5 | 80% |
| Fri | 5 | 100% |
| Sat | 5 | 80% |
| Sun | 6 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…