Route on-time record
CHS to MIA: most on-time flights and the best time to fly
Charleston (Charleston International Airport) to Miami (Miami International Airport). 1,037 nonstop flights in Jun 2025 to May 2026, 79% arrived within 15 minutes and 1.3% were cancelled. The most reliable flight number was American 1287 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
CHS → MIA
Charleston to Miami: 1,037 nonstop flights a year
On time (12 months)
79%
Cancelled
1.3%
avg delay 22 min
Best time to leave
Before 9 AM
90% on time vs 63% 6 to 9 PM
Most reliable airline
Envoy
84% chance on time
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Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · American 1287
6:00 AM → 7:40 AM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 2543; its record covers all of them.
88%
chance on time
- On time (history)
- 89%
- Cancelled
- 1.5%
- Avg arrival delay
- 9 min
- Arrived on time 89% of the time (324 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; 6 to 9 PM: 63%).
Strong track record · 324 flights
Find American 1287 fares Opens this date on Aviasales#2 · American 831
11:06 AM → 12:56 PM1h 50m nonstop
Local times, typical schedule. Last flown 2026-04-06.
83%
chance on time
- On time (history)
- 89%
- Cancelled
- 1.4%
- Avg arrival delay
- 28 min
- Arrived on time 89% of the time (71 flights, Jun 2025 to May 2026).
Moderate track record · 71 flights
Find American 831 fares Opens this date on Aviasales#3 · American 1955
11:14 AM → 12:59 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-20.
78%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 77% of the time (43 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- 71% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (43 flights), so its score leans on the airline's record at this hour.
Limited track record · 43 flights
Find American 1955 fares Opens this date on Aviasales#4 · American 1657
8:09 PM → 9:55 PM1h 46m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 1961, 2518; its record covers all of them.
67%
chance on time
- On time (history)
- 68%
- Cancelled
- 1.5%
- Avg arrival delay
- 41 min
- Arrived on time 68% of the time (192 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 63% on time; Before 9 AM: 90%).
- 66% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 192 flights
Find American 1657 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Envoy Air (sold as American Eagle)84%
72 flights · 89% on time as flown · 0.8% cancel
- American Airlines78%
950 flights · 79% on time as flown · 1.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM90%
365 flights · avg delay 8 min
- 9 AM to noon84%
341 flights · avg delay 19 min
- 6 to 9 PM63%
325 flights · avg delay 41 min
Best day: Wednesday (85%). Worst: Sunday (74%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft62%
- Airline (crew, maintenance, boarding)26%
- Air traffic control and airport volume11%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
CHS to MIA questions
- What time of day is best to fly CHS to MIA?
- Before 9 AM: 90% of flights arrived on time, against 63% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from CHS to MIA?
- Envoy, with a season-adjusted 84% chance of operating and arriving on time over 72 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on CHS to MIA?
- July (73% on time); the best was November (88%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from CHS
- MIA to CHS (return)
- CHS to ATL 89%
- CHS to CLT 83%
- CHS to ORD 77%
- CHS to DCA 72%
- CHS to LGA 74%
- CHS to EWR 79%
- CHS to DFW 80%
- CHS to BWI 82%
- CHS to PHL 78%
- CHS to BOS 71%
- CHS to BNA 81%
- CHS to JFK 73%
Live status: FAA delays and ground stops