Kansas City (MCI) to Miami (MIA): On-Time Performance
Data through July 2026
When you fly MCI to MIA matters as much as anything else about the booking: the route swung from 97% on-time in October 2025 to just 73% in July 2025. Across the full period the route averages 84% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 76%), which matters most in the rough months.
- On-time
- 84%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 2.3
- last 12 months
- Duration
- 3h 9m
- scheduled
- Distance
- 1,251 mi
Best airline from MCI to MIA
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 88% | 12 min | 2.0% | 858 |
| Envoy Air | 82% | 10 min | 1.6% | 305 |
| Southwest Airlines | 75% | 13 min | 0.3% | 303 |
Monthly on-time trend
Best time to fly from MCI to MIA
Aim for departures around 5 a.m. (89% on-time); avoid 2 p.m. departures (53%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 86% | 13 min |
| Tuesdaybest | 88% | 6 min |
| Wednesday | 87% | 8 min |
| Thursday | 85% | 16 min |
| Friday | 85% | 11 min |
| Saturday | 80% | 11 min |
| Sunday | 78% | 16 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft23%
- Airline operations53%
- National airspace system20%
- Weather5%
Frequently asked questions
- How often are flights from MCI to MIA delayed?
- 16% of MCI–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 12 minutes.
- Which airline is most reliable from MCI to MIA?
- American Airlines has the best on-time record on this route at 88%, based on 858 flights. 3 airlines flew MCI–MIA frequently enough to compare in this period.
- What is the best time of day to fly from MCI to MIA?
- Departures around 5 a.m. have the best record (89% on-time), while departures around 2 p.m. have the worst (53%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MCI to MIA?
- The scheduled MCI–MIA flight time averages 3h 9m over 1,251 miles. Actual arrival times vary — flights on this route land 15+ minutes late 16% of the time.
- How often are MCI to MIA flights cancelled?
- 1.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from MCI to MIA?
- July 2025 was the roughest month in this dataset, with only 73% of arrivals on time. The best was October 2025 at 97%. If your dates are flexible, that 24-point gap is worth planning around.
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Based on 1,475 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.