Best Time to Fly CHS to IAH: On-Time Stats by Hour & Airline
Charleston AFB/International → George Bush Intercontinental/Houston
Data through July 2026 · Last updated October 18, 2026
211 flights were scheduled from Charleston (CHS) to Houston (IAH) in the last 12 months, and 84.2% of those that flew arrived on time, 6.6 points above the US average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
October has been the best month (90% on time) and Thursday the weakest day of the week (80%).
0.5% of flights were cancelled, versus 1.8% nationally.
CHS 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 | 84.2% | 84 min | 0.5% | 211 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly CHS to IAH
On-time arrival % by scheduled departure hour (local time), 451 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 87.1% | 0.0% | 62 |
| 7am–8am | 89.3% | 1.4% | 209 |
| 4pm–5pm | Limited data | 15 | |
| 5pm–6pm | 75.9% | 1.2% | 165 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on CHS 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 | 1 | ||
| Summer peak (Jun 15 - Aug 15) | 84.4% | +1.6 pts | 2.4% | 125 |
| All other days | 82.9% | — | 0.6% | 325 |
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).