Best Time to Fly HOU to CHS: On-Time Stats by Hour & Airline
William P Hobby → Charleston AFB/International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 60.3% of Houston (HOU) to Charleston (CHS) flights arrived on time (193 scheduled flights). That is 17.3 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
May has been the best month (83% on time) and Sunday the weakest day of the week (64%).
0.5% of flights were cancelled, versus 1.8% nationally.
HOU 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 |
|---|---|---|---|---|
| Southwest Airlines | 60.3% | 46 min | 0.5% | 193 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly HOU to CHS
On-time arrival % by scheduled departure hour (local time), 420 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | Limited data | 10 | |
| 10am–11am | Limited data | 11 | |
| 11am–12pm | Limited data | 24 | |
| 12pm–1pm | 66.0% | 0.0% | 107 |
| 1pm–2pm | Limited data | 4 | |
| 2pm–3pm | Limited data | 30 | |
| 3pm–4pm | Limited data | 23 | |
| 4pm–5pm | Limited data | 19 | |
| 5pm–6pm | Limited data | 2 | |
| 6pm–7pm | 86.0% | 0.0% | 43 |
| 7pm–8pm | 31.2% | 0.0% | 32 |
| 8pm–9pm | 61.2% | 1.1% | 87 |
| 9pm–10pm | Limited data | 28 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on HOU 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 | 11 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 22 | ||
| Summer peak (Jun 15 - Aug 15) | 58.4% | -12.7 pts | 0.0% | 91 |
| All other days | 71.1% | — | 0.3% | 296 |
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).