Best Time to Fly MEM to IAH: On-Time Stats by Hour & Airline
Memphis International → George Bush Intercontinental/Houston
Data through July 2026 · Last updated October 18, 2026
1,086 flights were scheduled from Memphis (MEM) to Houston (IAH) in the last 12 months, and 80.1% of those that flew arrived on time, 2.4 points above the US average of 77.6%.
Among 2 airlines, United Airlines led with 84.6% on time and SkyWest Airlines was last with 77.8%.
Over 24 months, Tuesday was the most reliable day (85% on time) and June the worst month (68%).
The cancellation rate was 1.1% (US average 1.8%).
MEM 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 | 84.6% | 47 min | 1.6% | 364 |
| SkyWest Airlines | 77.8% | 82 min | 0.8% | 722 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MEM to IAH
On-time arrival % by scheduled departure hour (local time), 1,786 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 83.5% | 2.0% | 409 |
| 7am–8am | 85.7% | 0.7% | 310 |
| 8am–9am | Limited data | 1 | |
| 9am–10am | 80.2% | 0.0% | 96 |
| 11am–12pm | 81.5% | 0.6% | 470 |
| 3pm–4pm | 70.4% | 1.6% | 423 |
| 4pm–5pm | Limited data | 2 | |
| 5pm–6pm | Limited data | 19 | |
| 6pm–7pm | 89.3% | 0.0% | 56 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MEM 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 | 26 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 86.7% | +6.1 pts | 0.0% | 45 |
| Summer peak (Jun 15 - Aug 15) | 78.2% | -2.4 pts | 0.8% | 352 |
| All other days | 80.6% | — | 1.2% | 1,363 |
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).