Best Time to Fly IAH to CHS: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → Charleston AFB/International
Data through July 2026 · Last updated October 18, 2026
210 flights were scheduled from Houston (IAH) to Charleston (CHS) in the last 12 months, and 69.0% of those that flew arrived on time, 8.6 points below the US average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
March has been the best month (85% on time) and Monday the weakest day of the week (61%).
0.0% of flights were cancelled, versus 1.8% nationally.
IAH to CHS 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 | 69.0% | 68 min | 0.0% | 210 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to CHS
On-time arrival % by scheduled departure hour (local time), 449 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12pm–1pm | 79.6% | 0.0% | 167 |
| 1pm–2pm | Limited data | 16 | |
| 6pm–7pm | 65.5% | 1.0% | 208 |
| 7pm–8pm | 35.1% | 1.7% | 58 |
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 CHS
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) | 43.9% | -31.2 pts | 2.4% | 126 |
| All other days | 75.1% | — | 0.3% | 322 |
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).