Flight OddsUA1831 IAD → EWR
United Airlines · Washington, DC to Newark, NJ · 151 flights observed, 2025-12-18 to 2026-06-30 · 212 mi
UA1831 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
64%
Median delay
+7 min
90th percentile
+75 min
Cancellation rate
2%
How often is UA1831 on time?
Across 151 flights on IAD → EWR from 2025-12-18 to 2026-06-30, UA1831 arrived within 15 minutes of schedule 64% of the time. The median arrival delay was +7 min, and the worst 10% of flights arrived +75 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 | 94 | 64% |
| 16-30 min | 13 | 9% |
| 31-60 min | 19 | 13% |
| 61-120 min | 11 | 7% |
| 2+ hrs | 11 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 12 | 75% | +11 min |
| 2026-01 | 4 | 25% | +48 min |
| 2026-02 | 14 | 64% | +22 min |
| 2026-03 | 28 | 50% | +73 min |
| 2026-04 | 30 | 70% | +31 min |
| 2026-05 | 30 | 73% | +12 min |
| 2026-06 | 30 | 60% | +48 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 22 | 64% |
| Tue | 22 | 64% |
| Wed | 20 | 60% |
| Thu | 22 | 59% |
| Fri | 23 | 61% |
| Sat | 19 | 79% |
| Sun | 20 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…