Flight OddsUA4187 IAD → EWR
United Airlines · Washington, DC to Newark, NJ · 323 flights observed, 2025-07-01 to 2026-05-20 · 212 mi
UA4187 covers more than one route in the data window — the stats below are for IAD → EWR, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
70%
Median delay
-1 min
90th percentile
+97 min
Cancellation rate
4%
How often is UA4187 on time?
Across 323 flights on IAD → EWR from 2025-07-01 to 2026-05-20, UA4187 arrived within 15 minutes of schedule 70% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +97 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 218 | 70% |
| 16-30 min | 21 | 7% |
| 31-60 min | 22 | 7% |
| 61-120 min | 23 | 7% |
| 2+ hrs | 26 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 27 | 63% | +21 min |
| 2025-08 | 31 | 65% | +14 min |
| 2025-09 | 29 | 83% | +0 min |
| 2025-10 | 30 | 53% | +32 min |
| 2025-11 | 28 | 79% | +32 min |
| 2025-12 | 30 | 60% | +25 min |
| 2026-01 | 29 | 59% | +44 min |
| 2026-02 | 25 | 84% | +7 min |
| 2026-03 | 31 | 71% | +37 min |
| 2026-04 | 30 | 80% | +22 min |
| 2026-05 | 20 | 85% | +4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 44 | 64% |
| Tue | 45 | 78% |
| Wed | 46 | 70% |
| Thu | 44 | 64% |
| Fri | 46 | 72% |
| Sat | 43 | 70% |
| Sun | 42 | 76% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…