Best Time to Fly IAH to MEM: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → Memphis International
Data through July 2026 · Last updated October 18, 2026
1,088 flights were scheduled from Houston (IAH) to Memphis (MEM) in the last 12 months, and 79.7% of those that flew arrived on time, 2.1 points above the US average of 77.6%.
Among 2 airlines, SkyWest Airlines led with 83.6% on time and United Airlines was last with 72.1%.
Over 24 months, Wednesday was the most reliable day (87% on time) and June the worst month (69%).
The cancellation rate was 1.1% (US average 1.8%).
IAH to MEM 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 |
|---|---|---|---|---|
| SkyWest Airlines | 83.6% | 66 min | 1.0% | 721 |
| United Airlines | 72.1% | 48 min | 1.4% | 367 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to MEM
On-time arrival % by scheduled departure hour (local time), 1,789 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 84.9% | 1.0% | 414 |
| 8am–9am | 88.7% | 0.0% | 53 |
| 9am–10am | Limited data | 12 | |
| 11am–12pm | 78.0% | 0.0% | 82 |
| 12pm–1pm | 83.6% | 1.5% | 335 |
| 2pm–3pm | Limited data | 29 | |
| 4pm–5pm | 72.2% | 0.8% | 134 |
| 6pm–7pm | Limited data | 14 | |
| 7pm–8pm | 86.0% | 0.0% | 43 |
| 8pm–9pm | 69.6% | 1.2% | 659 |
| 9pm–10pm | Limited data | 14 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IAH to MEM
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 | 26 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 66.7% | -10.7 pts | 0.0% | 45 |
| Summer peak (Jun 15 - Aug 15) | 75.3% | -2.0 pts | 0.8% | 352 |
| All other days | 77.3% | — | 1.2% | 1,366 |
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).