Flight OddsUnited Airlines · Washington, DC to Philadelphia, PA · 47 flights observed, 2025-07-01 to 2025-08-17 · 135 mi
UA4440 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”.
How often is UA4440 on time?
Across 47 flights on IAD → PHL from 2025-07-01 to 2025-08-17, UA4440 arrived within 15 minutes of schedule 60% of the time. The median arrival delay was +4 min, and the worst 10% of flights arrived +105 min or later. 11% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 25 | 60% |
| 16-30 min | 3 | 7% |
| 31-60 min | 8 | 19% |
| 61-120 min | 2 | 5% |
| 2+ hrs | 4 | 10% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 26 | 62% | +16 min |
| 2025-08 | 16 | 56% | +33 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 40% |
| Tue | 7 | 57% |
| Wed | 6 | 67% |
| Thu | 6 | 33% |
| Fri | 6 | 50% |
| Sat | 6 | 83% |
| Sun | 6 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…