Charleston (CHS) to Miami (MIA): On-Time Performance
Data through July 2026
The calendar drives reliability on CHS–MIA. October 2024 flights landed on schedule 92% of the time, but July 2025 dropped to 71% — a gap of 20 points. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 68%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 22 min
- completed flights
- Cancelled
- 1.7%
- Flights/day
- 2.8
- last 12 months
- Duration
- 1h 45m
- scheduled
- Distance
- 489 mi
Best airline from CHS to MIA
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 81% | 14 min | 2.6% | 228 |
| American Airlines | 80% | 24 min | 1.5% | 1,665 |
Monthly on-time trend
Best time to fly from CHS to MIA
Aim for departures around 6 a.m. (91% on-time); avoid 7 p.m. departures (66%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 80% | 19 min |
| Tuesday | 85% | 18 min |
| Wednesdaybest | 87% | 11 min |
| Thursday | 79% | 31 min |
| Friday | 81% | 25 min |
| Saturday | 76% | 24 min |
| Sunday | 71% | 29 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft56%
- Airline operations33%
- National airspace system9%
- Weather2%
Frequently asked questions
- How often are flights from CHS to MIA delayed?
- 20% of CHS–MIA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 22 minutes.
- Which airline is most reliable from CHS to MIA?
- Envoy Air has the best on-time record on this route at 81%, based on 228 flights. 2 airlines flew CHS–MIA frequently enough to compare in this period.
- What is the best time of day to fly from CHS to MIA?
- Departures around 6 a.m. have the best record (91% on-time), while departures around 7 p.m. have the worst (66%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CHS to MIA?
- The scheduled CHS–MIA flight time averages 1h 45m over 489 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are CHS to MIA flights cancelled?
- 1.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from CHS to MIA?
- July 2025 was the roughest month in this dataset, with only 71% of arrivals on time. The best was October 2024 at 92%. If your dates are flexible, that 20-point gap is worth planning around.
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Based on 1,913 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.