Best Time to Fly CHS to MIA: On-Time Stats by Hour & Airline
Charleston AFB/International → Miami International
Data through July 2026 · Last updated October 18, 2026
1,007 flights were scheduled from Charleston (CHS) to Miami (MIA) in the last 12 months, and 79.6% of those that flew arrived on time, 2.0 points above the US average of 77.6%.
Envoy Air was the most punctual of the 2 airlines on the route at 89.7%, while American Airlines trailed at 79.0%.
November has been the best month (87% on time) and Sunday the weakest day of the week (70%).
1.2% of flights were cancelled, versus 1.8% nationally.
CHS to MIA 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 |
|---|---|---|---|---|
| Envoy Air | 89.7% | 60 min | 0.0% | 58 |
| American Airlines | 79.0% | 101 min | 1.1% | 934 |
| Republic Airways | Limited data | 15 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly CHS to MIA
On-time arrival % by scheduled departure hour (local time), 1,851 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 90.5% | 1.9% | 107 |
| 6am–7am | 92.2% | 1.7% | 526 |
| 7am–8am | 76.6% | 2.1% | 96 |
| 9am–10am | 86.1% | 0.0% | 108 |
| 10am–11am | 83.0% | 1.5% | 198 |
| 11am–12pm | 78.8% | 0.8% | 120 |
| 12pm–1pm | Limited data | 1 | |
| 1pm–2pm | Limited data | 5 | |
| 2pm–3pm | Limited data | 2 | |
| 5pm–6pm | Limited data | 4 | |
| 6pm–7pm | Limited data | 19 | |
| 7pm–8pm | 65.9% | 1.5% | 337 |
| 8pm–9pm | 69.3% | 2.4% | 328 |
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 MIA
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) | 85.3% | +4.5 pts | 0.0% | 34 |
| Christmas & New Year (Dec 20 - Jan 3) | 76.1% | -4.8 pts | 0.0% | 71 |
| Summer peak (Jun 15 - Aug 15) | 77.3% | -3.5 pts | 3.0% | 339 |
| All other days | 80.8% | — | 1.6% | 1,407 |
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).