Best Time to Fly EYW to MIA: On-Time Stats by Hour & Airline
Key West International → Miami International
Data through July 2026 · Last updated October 18, 2026
1,250 flights were scheduled from Key West (EYW) to Miami (MIA) in the last 12 months, and 80.9% of those that flew arrived on time, 3.2 points above the US average of 77.6%.
Among 2 airlines, Envoy Air led with 82.1% on time and Republic Airways was last with 62.3%.
Over 24 months, Wednesday was the most reliable day (88% on time) and March the worst month (72%).
The cancellation rate was 0.4% (US average 1.8%).
EYW 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 |
|---|---|---|---|---|
| Envoy Air | 82.1% | 69 min | 0.4% | 1,156 |
| Republic Airways | 62.3% | 71 min | 0.0% | 69 |
| American Airlines | Limited data | 25 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly EYW to MIA
On-time arrival % by scheduled departure hour (local time), 2,651 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 95.0% | 0.0% | 80 |
| 7am–8am | Limited data | 27 | |
| 8am–9am | Limited data | 1 | |
| 10am–11am | Limited data | 25 | |
| 11am–12pm | 87.4% | 1.1% | 553 |
| 12pm–1pm | 88.3% | 0.0% | 94 |
| 1pm–2pm | 76.0% | 0.5% | 595 |
| 2pm–3pm | 89.0% | 5.2% | 77 |
| 3pm–4pm | 70.3% | 1.1% | 262 |
| 4pm–5pm | 60.9% | 0.0% | 151 |
| 5pm–6pm | 81.0% | 3.7% | 109 |
| 6pm–7pm | Limited data | 29 | |
| 7pm–8pm | 84.1% | 2.1% | 618 |
| 8pm–9pm | 80.0% | 0.0% | 30 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on EYW 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) | 82.3% | +1.2 pts | 0.0% | 62 |
| Christmas & New Year (Dec 20 - Jan 3) | 68.5% | -12.6 pts | 0.0% | 108 |
| Summer peak (Jun 15 - Aug 15) | 82.9% | +1.8 pts | 1.3% | 373 |
| All other days | 81.1% | — | 1.4% | 2,108 |
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).