Best Time to Fly MCI to MIA: On-Time Stats by Hour & Airline
Kansas City International → Miami International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 84.0% of Kansas City (MCI) to Miami (MIA) flights arrived on time (844 scheduled flights). That is 6.3 points above the national average of 77.6%.
Among 3 airlines, American Airlines led with 90.0% on time and Southwest Airlines was last with 73.2%.
Over 24 months, Tuesday was the most reliable day (87% on time) and December the worst month (77%).
The cancellation rate was 1.4% (US average 1.8%).
MCI to MIA on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| American Airlines | 90.0% | 128 min | 2.0% | 460 |
| Envoy Air | 81.9% | 45 min | 1.1% | 184 |
| Southwest Airlines | 73.2% | 49 min | 0.5% | 191 |
| Republic Airways | Limited data | 9 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MCI to MIA
On-time arrival % by scheduled departure hour (local time), 1,444 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 88.8% | 2.0% | 730 |
| 6am–7am | Limited data | 17 | |
| 7am–8am | 82.9% | 2.0% | 149 |
| 8am–9am | Limited data | 11 | |
| 9am–10am | 79.6% | 1.8% | 55 |
| 10am–11am | 83.3% | 0.0% | 36 |
| 11am–12pm | 84.5% | 0.5% | 194 |
| 12pm–1pm | Limited data | 30 | |
| 1pm–2pm | 63.6% | 0.0% | 33 |
| 2pm–3pm | 52.6% | 0.0% | 38 |
| 3pm–4pm | Limited data | 12 | |
| 4pm–5pm | Limited data | 1 | |
| 5pm–6pm | 76.3% | 2.2% | 138 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MCI to MIA
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 68.8% | -16.5 pts | 3.0% | 33 |
| Christmas & New Year (Dec 20 - Jan 3) | 72.7% | -12.5 pts | 0.0% | 66 |
| Summer peak (Jun 15 - Aug 15) | 82.4% | -2.8 pts | 1.1% | 260 |
| All other days | 85.2% | — | 1.8% | 1,085 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).