Best Time to Fly MIA to EYW: On-Time Stats by Hour & Airline
Miami International → Key West International
Data through July 2026 · Last updated October 18, 2026
1,250 flights were scheduled from Miami (MIA) to Key West (EYW) in the last 12 months, and 86.2% of those that flew arrived on time, 8.6 points above the US average of 77.6%.
Envoy Air was the most punctual of the 2 airlines on the route at 87.5%, while Republic Airways trailed at 67.7%.
October has been the best month (93% on time) and Saturday the weakest day of the week (78%).
0.4% of flights were cancelled, versus 1.8% nationally.
MIA to EYW 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 | 87.5% | 50 min | 0.4% | 1,156 |
| Republic Airways | 67.7% | 60 min | 0.0% | 69 |
| American Airlines | Limited data | 25 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MIA to EYW
On-time arrival % by scheduled departure hour (local time), 2,650 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | Limited data | 21 | |
| 9am–10am | 92.4% | 0.6% | 318 |
| 10am–11am | 90.2% | 0.9% | 322 |
| 11am–12pm | Limited data | 29 | |
| 12pm–1pm | 81.7% | 0.8% | 630 |
| 1pm–2pm | 86.0% | 7.4% | 54 |
| 2pm–3pm | Limited data | 24 | |
| 3pm–4pm | 84.8% | 0.4% | 227 |
| 4pm–5pm | 84.5% | 2.2% | 270 |
| 5pm–6pm | 88.3% | 2.1% | 235 |
| 6pm–7pm | 85.7% | 1.9% | 413 |
| 9pm–10pm | 96.5% | 0.0% | 58 |
| 10pm–11pm | 93.8% | 0.0% | 49 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MIA to EYW
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) | 77.4% | -9.4 pts | 0.0% | 62 |
| Christmas & New Year (Dec 20 - Jan 3) | 78.7% | -8.2 pts | 0.0% | 108 |
| Summer peak (Jun 15 - Aug 15) | 86.1% | -0.8 pts | 1.3% | 373 |
| All other days | 86.9% | — | 1.4% | 2,107 |
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).