Flight OddsUA4910 IAD → DAY
United Airlines · Washington, DC to Dayton, OH · 117 flights observed, 2025-07-01 to 2025-10-25 · 367 mi
UA4910 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
-10 min
90th percentile
+24 min
Cancellation rate
1%
How often is UA4910 on time?
Across 117 flights on IAD → DAY from 2025-07-01 to 2025-10-25, UA4910 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +24 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 | 102 | 89% |
| 16-30 min | 4 | 3% |
| 31-60 min | 3 | 3% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 6 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 80% | +15 min |
| 2025-08 | 31 | 97% | -2 min |
| 2025-09 | 30 | 93% | -8 min |
| 2025-10 | 24 | 83% | +11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 16 | 94% |
| Tue | 16 | 88% |
| Wed | 17 | 88% |
| Thu | 17 | 100% |
| Fri | 17 | 100% |
| Sat | 17 | 71% |
| Sun | 15 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…