Miami (MIA) to Cincinnati (CVG): On-Time Performance
Data through May 2026
When you fly MIA to CVG matters as much as anything else about the booking: the route swung from 90% on-time in October 2024 to just 55% in August 2025. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (89% vs 78%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 2.8
- last 12 months
- Duration
- 2h 50m
- scheduled
- Distance
- 948 mi
Best airline from MIA to CVG
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 81% | 20 min | 2.0% | 102 |
| Envoy Air | 78% | 12 min | 1.2% | 1,649 |
| Frontier Airlines | 73% | 26 min | 2.2% | 360 |
Monthly on-time trend
Best time to fly from MIA to CVG
Aim for departures around 9 a.m. (90% on-time); avoid 3 p.m. departures (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 14 min |
| Tuesdaybest | 87% | 7 min |
| Wednesday | 82% | 12 min |
| Thursday | 77% | 15 min |
| Friday | 79% | 13 min |
| Saturday | 72% | 13 min |
| Sunday | 69% | 26 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft50%
- Airline operations19%
- National airspace system22%
- Weather9%
Frequently asked questions
- How often are flights from MIA to CVG delayed?
- 23% of MIA–CVG flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 15 minutes.
- Which airline is most reliable from MIA to CVG?
- American Airlines has the best on-time record on this route at 81%, based on 102 flights. 3 airlines flew MIA–CVG frequently enough to compare in this period.
- What is the best time of day to fly from MIA to CVG?
- Departures around 9 a.m. have the best record (90% on-time), while departures around 3 p.m. have the worst (61%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MIA to CVG?
- The scheduled MIA–CVG flight time averages 2h 50m over 948 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are MIA to CVG flights cancelled?
- 1.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from MIA to CVG?
- August 2025 was the roughest month in this dataset, with only 55% of arrivals on time. The best was October 2024 at 90%. If your dates are flexible, that 35-point gap is worth planning around.
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Based on 2,126 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.