Flight OddsUA4564 IAD → PHL
United Airlines · Washington, DC to Philadelphia, PA · 88 flights observed, 2026-01-06 to 2026-04-29 · 135 mi
UA4564 covers more than one route in the data window — the stats below are for IAD → PHL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
84%
Median delay
-17 min
90th percentile
+60 min
Cancellation rate
1%
How often is UA4564 on time?
Across 88 flights on IAD → PHL from 2026-01-06 to 2026-04-29, UA4564 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -17 min, and the worst 10% of flights arrived +60 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 | 73 | 84% |
| 16-30 min | 2 | 2% |
| 31-60 min | 3 | 3% |
| 61-120 min | 5 | 6% |
| 2+ hrs | 4 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 19 | 68% | +35 min |
| 2026-02 | 21 | 95% | -13 min |
| 2026-03 | 23 | 83% | -2 min |
| 2026-04 | 24 | 88% | -12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 15 | 73% |
| Tue | 17 | 94% |
| Wed | 16 | 88% |
| Thu | 16 | 88% |
| Fri | 16 | 75% |
| Sat | No data | — |
| Sun | 7 | 86% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…