Flight OddsUA4521 EWR → PIT
United Airlines · Newark, NJ to Pittsburgh, PA · 34 flights observed, 2025-10-27 to 2025-12-01 · 319 mi
UA4521 covers more than one route in the data window — the stats below are for EWR → PIT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
62%
Median delay
+7 min
90th percentile
+162 min
Cancellation rate
15%
How often is UA4521 on time?
Across 34 flights on EWR → PIT from 2025-10-27 to 2025-12-01, UA4521 arrived within 15 minutes of schedule 62% of the time. The median arrival delay was +7 min, and the worst 10% of flights arrived +162 min or later. 15% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 18 | 62% |
| 16-30 min | 3 | 10% |
| 31-60 min | 4 | 14% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 4 | 14% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 5 | 80% | +10 min |
| 2025-11 | 23 | 61% | +52 min |
| 2025-12 | 1 | 0% | +53 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 50% |
| Tue | 5 | 0% |
| Wed | 5 | 100% |
| Thu | 3 | 100% |
| Fri | 3 | 67% |
| Sat | 4 | 100% |
| Sun | 3 | 33% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…