Best Time to Fly MCO to IAH: On-Time Stats by Hour & Airline
Orlando International → George Bush Intercontinental/Houston
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.5% of Orlando (MCO) to Houston (IAH) flights arrived on time (3,627 scheduled flights). That is 4.9 points above the national average of 77.6%.
United Airlines was the most punctual of the 3 airlines on the route at 84.4%, while Spirit Airlines trailed at 76.4%.
September has been the best month (87% on time) and Sunday the weakest day of the week (74%).
1.0% of flights were cancelled, versus 1.8% nationally.
MCO 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 | 84.4% | 83 min | 0.7% | 2,463 |
| Frontier Airlines | 80.8% | 75 min | 0.4% | 559 |
| Spirit Airlines | 76.4% | 72 min | 2.8% | 605 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MCO to IAH
On-time arrival % by scheduled departure hour (local time), 7,191 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.5% | 0.0% | 55 |
| 6am–7am | 95.0% | 1.4% | 142 |
| 7am–8am | 90.8% | 1.0% | 921 |
| 8am–9am | 83.7% | 1.6% | 250 |
| 9am–10am | 87.0% | 1.0% | 873 |
| 10am–11am | 81.7% | 1.5% | 200 |
| 11am–12pm | 87.8% | 1.3% | 706 |
| 12pm–1pm | 80.5% | 1.0% | 194 |
| 1pm–2pm | 84.2% | 1.0% | 499 |
| 2pm–3pm | 78.2% | 0.9% | 428 |
| 3pm–4pm | 79.8% | 0.9% | 635 |
| 4pm–5pm | 69.6% | 1.0% | 299 |
| 5pm–6pm | 66.5% | 1.1% | 728 |
| 6pm–7pm | 69.5% | 1.3% | 302 |
| 7pm–8pm | 74.0% | 1.8% | 565 |
| 8pm–9pm | 72.0% | 3.5% | 170 |
| 9pm–10pm | 67.3% | 3.8% | 105 |
| 10pm–11pm | 81.4% | 2.3% | 88 |
| 11pm–12am | 80.7% | 0.0% | 31 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MCO 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) | 79.0% | -4.3 pts | 0.0% | 152 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.3% | -1.9 pts | 1.0% | 314 |
| Summer peak (Jun 15 - Aug 15) | 68.7% | -14.5 pts | 1.3% | 1,159 |
| All other days | 83.2% | — | 1.3% | 5,566 |
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).