Flight OddsUA1231 MIA → EWR
United Airlines · Miami, FL to Newark, NJ · 67 flights observed, 2025-07-01 to 2025-10-24 · 1,085 mi
UA1231 covers more than one route in the data window — the stats below are for MIA → EWR, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
52%
Median delay
+11 min
90th percentile
+123 min
Cancellation rate
4%
How often is UA1231 on time?
Across 67 flights on MIA → EWR from 2025-07-01 to 2025-10-24, UA1231 arrived within 15 minutes of schedule 52% of the time. The median arrival delay was +11 min, and the worst 10% of flights arrived +123 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 | 33 | 52% |
| 16-30 min | 5 | 8% |
| 31-60 min | 7 | 11% |
| 61-120 min | 11 | 17% |
| 2+ hrs | 8 | 13% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 23 | 30% | +53 min |
| 2025-08 | 15 | 40% | +86 min |
| 2025-09 | 5 | 80% | +18 min |
| 2025-10 | 21 | 76% | +8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 10 | 40% |
| Tue | 10 | 70% |
| Wed | 11 | 45% |
| Thu | 11 | 36% |
| Fri | 11 | 73% |
| Sat | No data | — |
| Sun | 11 | 45% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…