Miami (MIA) to Key West (EYW): On-Time Performance
Data through July 2026
Miami (MIA) to Key West (EYW) effectively runs on two schedules. In May 2026, 94% of arrivals were on time; in February 2026 that fell to 75% — a 19-point seasonal swing. Across the full period the route averages 86% on-time against a national 78%.
- On-time
- 86%
- arrived <15 min late
- Avg delay
- 8 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 3.4
- last 12 months
- Duration
- 1h 1m
- scheduled
- Distance
- 126 mi
Best airline from MIA to EYW
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 87% | 7 min | 1.4% | 2,610 |
| Republic Airways | 66% | 19 min | 0.0% | 108 |
Monthly on-time trend
Best time to fly from MIA to EYW
Aim for departures around 9 p.m. (97% on-time); avoid 12 p.m. departures (81%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 89% | 6 min |
| Tuesdaybest | 91% | 5 min |
| Wednesday | 89% | 5 min |
| Thursday | 87% | 8 min |
| Friday | 85% | 7 min |
| Saturday | 78% | 11 min |
| Sunday | 83% | 12 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft39%
- Airline operations22%
- National airspace system30%
- Weather10%
Frequently asked questions
- How often are flights from MIA to EYW delayed?
- 14% of MIA–EYW 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 8 minutes.
- Which airline is most reliable from MIA to EYW?
- Envoy Air has the best on-time record on this route at 87%, based on 2,610 flights. 2 airlines flew MIA–EYW frequently enough to compare in this period.
- What is the best time of day to fly from MIA to EYW?
- Departures around 9 p.m. have the best record (97% on-time), while departures around 12 p.m. have the worst (81%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MIA to EYW?
- The scheduled MIA–EYW flight time averages 1h 1m over 126 miles. Actual arrival times vary — flights on this route land 15+ minutes late 14% of the time.
- How often are MIA to EYW flights cancelled?
- 1.3% 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 MIA to EYW?
- February 2026 was the roughest month in this dataset, with only 75% of arrivals on time. The best was May 2026 at 94%. If your dates are flexible, that 19-point gap is worth planning around.
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Based on 2,743 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.