Route on-time record
CMH to MIA: most on-time flights and the best time to fly
Columbus (John Glenn Columbus International Airport) to Miami (Miami International Airport). 1,092 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was Envoy 3667 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
CMH → MIA
Columbus to Miami: 1,092 nonstop flights a year
On time (12 months)
81%
Cancelled
0.5%
avg delay 13 min
Best time to leave
Before 9 AM
88% on time vs 59% 3 to 6 PM
Most reliable airline
Southwest
82% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
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 · Envoy 3667 · sold as American Eagle
6:00 AM → 8:45 AM2h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 93% of the time (148 flights, Jun 2025 to May 2026).
- Never cancelled in 149 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 59%).
Moderate track record · 148 flights
Find 6:00 AM flight fares Opens this date on Aviasales#2 · Southwest 277
10:35 AM → 1:10 PM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 1393; its record covers all of them.
87%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 92% of the time (39 flights, Jun 2025 to May 2026).
- Never cancelled in 39 scheduled flights.
- Lands inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 39 flights
Find Southwest 277 fares Opens this date on Aviasales#3 · Envoy 3845 · sold as American Eagle
5:08 AM → 7:53 AM2h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 80% of the time (10 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 59%).
Limited track record · 10 flights
Find 5:08 AM flight fares Opens this date on Aviasales#4 · Envoy 4085 · sold as American Eagle
6:13 PM → 8:58 PM2h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Envoy 3518; its record covers all of them.
67%
chance on time
- On time (history)
- 64%
- Cancelled
- 0.0%
- Avg arrival delay
- 22 min
- Arrived on time 64% of the time (170 flights, Jun 2025 to May 2026).
- Never cancelled in 170 scheduled flights.
- 61% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 170 flights
Find 6:13 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines82%
160 flights · 84% on time as flown · 0.9% cancel
- Envoy Air (sold as American Eagle)80%
889 flights · 80% on time as flown · 0.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM88%
561 flights · avg delay 9 min
- 9 AM to noon84%
150 flights · avg delay 11 min
- Noon to 3 PM75%
60 flights · avg delay 20 min
- 3 to 6 PM59%
189 flights · avg delay 27 min
- 6 to 9 PM81%
132 flights · avg delay 12 min
Best day: Friday (85%). Worst: Sunday (77%).
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 aircraft43%
- Airline (crew, maintenance, boarding)26%
- Air traffic control and airport volume25%
- Severe weather6%
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
CMH to MIA questions
- What time of day is best to fly CMH to MIA?
- Before 9 AM: 88% of flights arrived on time, against 59% for departures 3 to 6 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 CMH to MIA?
- Southwest, with a season-adjusted 82% chance of operating and arriving on time over 160 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 CMH to MIA?
- August (74% on time); the best was September (92%), 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 CMH
- MIA to CMH (return)
- CMH to ORD 74%
- CMH to ATL 86%
- CMH to LGA 78%
- CMH to MCO 78%
- CMH to DCA 68%
- CMH to CLT 83%
- CMH to BOS 81%
- CMH to EWR 82%
- CMH to DEN 78%
- CMH to DFW 78%
- CMH to JFK 83%
- CMH to DTW 85%
Most on-time flights from CMH on every route →
Live status: FAA delays and ground stops