Best Time to Fly MIA to CHS: On-Time Stats by Hour & Airline
Miami International → Charleston AFB/International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 68.5% of Miami (MIA) to Charleston (CHS) flights arrived on time (1,006 scheduled flights). That is 9.1 points below the national average of 77.6%.
Among 2 airlines, Envoy Air led with 98.3% on time and American Airlines was last with 66.6%.
Over 24 months, Wednesday was the most reliable day (80% on time) and July the worst month (58%).
The cancellation rate was 1.2% (US average 1.8%).
MIA 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 |
|---|---|---|---|---|
| Envoy Air | 98.3% | 16 min | 0.0% | 58 |
| American Airlines | 66.6% | 79 min | 1.1% | 933 |
| Republic Airways | Limited data | 15 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MIA to CHS
On-time arrival % by scheduled departure hour (local time), 1,849 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 87.2% | 0.0% | 142 |
| 8am–9am | 86.7% | 1.1% | 283 |
| 10am–11am | Limited data | 6 | |
| 12pm–1pm | Limited data | 2 | |
| 2pm–3pm | Limited data | 4 | |
| 3pm–4pm | Limited data | 11 | |
| 4pm–5pm | 68.6% | 1.4% | 142 |
| 5pm–6pm | 63.6% | 1.7% | 522 |
| 6pm–7pm | Limited data | 18 | |
| 8pm–9pm | Limited data | 2 | |
| 9pm–10pm | 70.0% | 1.1% | 189 |
| 10pm–11pm | 60.3% | 2.1% | 515 |
| 11pm–12am | Limited data | 13 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MIA 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) | 76.5% | +5.2 pts | 0.0% | 34 |
| Christmas & New Year (Dec 20 - Jan 3) | 64.3% | -7.0 pts | 0.0% | 71 |
| Summer peak (Jun 15 - Aug 15) | 63.1% | -8.2 pts | 2.7% | 338 |
| All other days | 71.3% | — | 1.4% | 1,406 |
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).