Key West (EYW) to Miami (MIA): On-Time Performance
Data through July 2026
When you fly EYW to MIA matters as much as anything else about the booking: the route swung from 92% on-time in October 2024 to just 65% in March 2026. Across the full period the route averages 81% on-time against a national 78%.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 3.4
- last 12 months
- Duration
- 51m
- scheduled
- Distance
- 126 mi
Best airline from EYW to MIA
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 82% | 13 min | 1.4% | 2,610 |
| Republic Airways | 63% | 28 min | 0.0% | 108 |
Monthly on-time trend
Best time to fly from EYW to MIA
Aim for departures around 6 a.m. (95% on-time); avoid 4 p.m. departures (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 15 min |
| Tuesday | 85% | 10 min |
| Wednesdaybest | 88% | 7 min |
| Thursday | 81% | 15 min |
| Friday | 81% | 13 min |
| Saturday | 74% | 17 min |
| Sunday | 78% | 18 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft59%
- Airline operations17%
- National airspace system14%
- Weather10%
Frequently asked questions
- How often are flights from EYW to MIA delayed?
- 19% of EYW–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 14 minutes.
- Which airline is most reliable from EYW to MIA?
- Envoy Air has the best on-time record on this route at 82%, based on 2,610 flights. 2 airlines flew EYW–MIA frequently enough to compare in this period.
- What is the best time of day to fly from EYW to MIA?
- Departures around 6 a.m. have the best record (95% on-time), while departures around 4 p.m. have the worst (61%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from EYW to MIA?
- The scheduled EYW–MIA flight time averages 51m over 126 miles. Actual arrival times vary — flights on this route land 15+ minutes late 19% of the time.
- How often are EYW to MIA 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 EYW to MIA?
- March 2026 was the roughest month in this dataset, with only 65% of arrivals on time. The best was October 2024 at 92%. If your dates are flexible, that 28-point gap is worth planning around.
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Based on 2,744 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.