Best Time to Fly EWR to IAH: On-Time Stats by Hour & Airline
Newark Liberty International → George Bush Intercontinental/Houston
Data through July 2026 · Last updated October 18, 2026
3,766 flights were scheduled from Newark (EWR) to Houston (IAH) in the last 12 months, and 80.4% of those that flew arrived on time, 2.7 points above the US average of 77.6%.
Among 2 airlines, United Airlines led with 81.1% on time and Spirit Airlines was last with 68.8%.
Over 24 months, Tuesday was the most reliable day (83% on time) and July the worst month (72%).
The cancellation rate was 1.9% (US average 1.8%).
EWR to IAH on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| United Airlines | 81.1% | 74 min | 1.6% | 3,534 |
| Spirit Airlines | 68.8% | 85 min | 7.3% | 232 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly EWR to IAH
On-time arrival % by scheduled departure hour (local time), 7,514 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.3% | 1.3% | 555 |
| 6am–7am | 91.4% | 1.0% | 413 |
| 7am–8am | 89.8% | 1.3% | 762 |
| 8am–9am | 87.2% | 0.8% | 355 |
| 9am–10am | 84.1% | 1.7% | 115 |
| 10am–11am | 77.0% | 1.0% | 616 |
| 11am–12pm | 82.4% | 1.8% | 163 |
| 12pm–1pm | 84.3% | 2.6% | 692 |
| 1pm–2pm | 65.0% | 1.0% | 99 |
| 2pm–3pm | 77.4% | 1.0% | 710 |
| 3pm–4pm | 68.0% | 2.4% | 455 |
| 4pm–5pm | 72.8% | 1.4% | 348 |
| 5pm–6pm | 71.3% | 2.0% | 703 |
| 6pm–7pm | 64.7% | 4.7% | 107 |
| 7pm–8pm | 72.3% | 2.0% | 654 |
| 8pm–9pm | 70.4% | 2.8% | 565 |
| 9pm–10pm | 64.8% | 4.5% | 202 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on EWR to IAH
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 82.2% | +1.9 pts | 0.0% | 146 |
| Christmas & New Year (Dec 20 - Jan 3) | 79.9% | -0.4 pts | 0.6% | 325 |
| Summer peak (Jun 15 - Aug 15) | 71.5% | -8.8 pts | 3.7% | 1,293 |
| All other days | 80.3% | — | 1.5% | 5,750 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).