MIA to CHS flight delays & on-time performance
Nonstop flights from Miami International Airport to Charleston International Airport · 489 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at MIA or CHS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Miami (MIA) to Charleston (CHS) arrived on time 69% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.2% were cancelled, and 12% arrived an hour or more late.
- Envoy Air was the most punctual airline here (98% on time); American Airlines was the least (67%).
- Departures scheduled around 7am did best (87% on time); around 10pm did worst (56%).
- Wednesday was the most reliable day to fly (79% on time) and Sunday the least (51%).
- The largest source of delay minutes was late-arriving aircraft (43%).
Which airline is most on time from MIA to CHS?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Envoy AirRegional airline operating American Eagle flights. | 98% | 0.0% | 1 min | 0.0% | 58 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 77% | 13.3% | 12 min | 0.0% | 15 |
| American Airlines | 67% | 1.1% | 28 min | 12.7% | 933 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am87%142 flights
- 8am86%168 flights
- 4pm67%35 flights
- 5pm60%286 flights
- 9pm87%31 flights
- 10pm56%315 flights
- 11pm69%13 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday68%4.8% cancelled
- Tuesday79%1.4% cancelled
- Wednesday79%0.0% cancelled
- Thursday69%0.0% cancelled
- Friday67%0.0% cancelled
- Saturday69%2.1% cancelled
- Sunday51%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft43%
- Airline (crew, maintenance, cleaning, fueling)42%
- Air traffic control & airport congestion11%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather92%
- Air traffic control & airport congestion8%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
MIA to CHS: common questions
- How often are MIA to CHS flights on time?
- 69% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Miami to Charleston cancelled?
- 1.2% of scheduled flights were cancelled (12 of 1,006).
- How long are typical delays?
- Across all flights the average arrival delay was 26 min (early arrivals count as zero). Flights that were late arrived 79 min behind schedule on average, and 11.8% of flights were an hour or more late.
- How long is taxi time at MIA?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: CHS to MIA — 80% on time
More flights from Miami
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: MIA → CHS, nonstop flights by US airlines that report to the DOT. How we calculate this.