Best Time to Fly MCI to IAH: On-Time Stats by Hour & Airline
Kansas City International → George Bush Intercontinental/Houston
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 86.3% of Kansas City (MCI) to Houston (IAH) flights arrived on time (486 scheduled flights). That is 8.7 points above the national average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (94% on time) and April the worst month (79%).
The cancellation rate was 0.6% (US average 1.8%).
MCI 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 | 86.6% | 70 min | 0.6% | 480 |
| SkyWest Airlines | Limited data | 6 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MCI to IAH
On-time arrival % by scheduled departure hour (local time), 945 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 87.0% | 1.8% | 439 |
| 8am–9am | 86.9% | 0.8% | 392 |
| 10am–11am | Limited data | 1 | |
| 2pm–3pm | 84.1% | 0.0% | 44 |
| 3pm–4pm | 75.8% | 1.5% | 67 |
| 4pm–5pm | Limited data | 1 | |
| 8pm–9pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MCI 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) | Limited data | 13 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 30 | ||
| Summer peak (Jun 15 - Aug 15) | 87.7% | +2.4 pts | 1.8% | 166 |
| All other days | 85.3% | — | 1.1% | 736 |
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).