Flight OddsUA4570 IAD → PHL
United Airlines · Washington, DC to Philadelphia, PA · 45 flights observed, 2026-01-06 to 2026-03-04 · 135 mi
UA4570 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
68%
Median delay
-5 min
90th percentile
+119 min
Cancellation rate
2%
How often is UA4570 on time?
Across 45 flights on IAD → PHL from 2026-01-06 to 2026-03-04, UA4570 arrived within 15 minutes of schedule 68% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +119 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 30 | 68% |
| 16-30 min | 2 | 5% |
| 31-60 min | 5 | 11% |
| 61-120 min | 2 | 5% |
| 2+ hrs | 5 | 11% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 18 | 56% | +102 min |
| 2026-02 | 23 | 78% | -4 min |
| 2026-03 | 3 | 67% | +11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 33% |
| Tue | 9 | 89% |
| Wed | 9 | 78% |
| Thu | 8 | 75% |
| Fri | 8 | 38% |
| Sat | 3 | 100% |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…