Flight OddsUA4177 EWR → IAD
United Airlines · Newark, NJ to Washington, DC · 322 flights observed, 2025-07-01 to 2026-05-20 · 212 mi
UA4177 covers more than one route in the data window — the stats below are for EWR → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
74%
Median delay
-5 min
90th percentile
+59 min
Cancellation rate
3%
How often is UA4177 on time?
Across 322 flights on EWR → IAD from 2025-07-01 to 2026-05-20, UA4177 arrived within 15 minutes of schedule 74% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +59 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 230 | 74% |
| 16-30 min | 21 | 7% |
| 31-60 min | 31 | 10% |
| 61-120 min | 15 | 5% |
| 2+ hrs | 15 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 72% | +35 min |
| 2025-08 | 30 | 90% | -10 min |
| 2025-09 | 30 | 83% | +1 min |
| 2025-10 | 31 | 65% | +13 min |
| 2025-11 | 29 | 62% | +16 min |
| 2025-12 | 29 | 48% | +29 min |
| 2026-01 | 29 | 66% | +18 min |
| 2026-02 | 25 | 80% | -1 min |
| 2026-03 | 30 | 77% | +25 min |
| 2026-04 | 30 | 80% | -2 min |
| 2026-05 | 20 | 95% | -16 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 43 | 67% |
| Tue | 44 | 70% |
| Wed | 46 | 76% |
| Thu | 45 | 73% |
| Fri | 46 | 74% |
| Sat | 45 | 76% |
| Sun | 43 | 79% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…