UA1397 IAH → EWR
United Airlines · Houston, TX to Newark, NJ · 321 flights observed, 2025-07-01 to 2026-06-30 · 1,400 mi
UA1397 covers more than one route in the data window — the stats below are for IAH → EWR, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
72%
Median delay
-4 min
90th percentile
+75 min
Cancellation rate
1%
How often is UA1397 on time?
Across 321 flights on IAH → EWR from 2025-07-01 to 2026-06-30, UA1397 arrived within 15 minutes of schedule 72% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +75 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 227 | 72% |
| 16-30 min | 25 | 8% |
| 31-60 min | 23 | 7% |
| 61-120 min | 24 | 8% |
| 2+ hrs | 15 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 28 | 57% | +56 min |
| 2025-08 | 30 | 60% | +20 min |
| 2025-09 | 7 | 71% | -1 min |
| 2025-10 | 30 | 57% | +20 min |
| 2025-11 | 26 | 50% | +64 min |
| 2025-12 | 15 | 73% | +7 min |
| 2026-01 | 30 | 87% | +2 min |
| 2026-02 | 26 | 85% | -4 min |
| 2026-03 | 31 | 84% | +0 min |
| 2026-04 | 30 | 83% | -6 min |
| 2026-05 | 31 | 81% | -2 min |
| 2026-06 | 30 | 77% | +11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 45 | 78% |
| Tue | 42 | 86% |
| Wed | 43 | 77% |
| Thu | 45 | 69% |
| Fri | 47 | 55% |
| Sat | 47 | 74% |
| Sun | 45 | 69% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…