Atlanta (ATL) to Key West (EYW): On-Time Performance
Data through July 2026
Atlanta (ATL) to Key West (EYW) effectively runs on two schedules. In September 2025, 94% of arrivals were on time; in July 2025 that fell to 68% — a 27-point seasonal swing. Across the full period the route averages 81% on-time against a national 78%. Morning departures also hold up better than evening ones (85% vs 77%), which matters most in the rough months.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 1.8%
- Flights/day
- 4.0
- last 12 months
- Duration
- 1h 53m
- scheduled
- Distance
- 646 mi
Monthly on-time trend
Best time to fly from ATL to EYW
Aim for departures around 8 a.m. (90% on-time); avoid 12 p.m. departures (73%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 15 min |
| Tuesday | 83% | 8 min |
| Wednesday | 84% | 9 min |
| Thursdaybest | 86% | 9 min |
| Friday | 79% | 19 min |
| Saturday | 80% | 15 min |
| Sunday | 73% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft14%
- Airline operations47%
- National airspace system22%
- Weather17%
Frequently asked questions
- How often are flights from ATL to EYW delayed?
- 20% of ATL–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 14 minutes.
- What is the best time of day to fly from ATL to EYW?
- Departures around 8 a.m. have the best record (90% on-time), while departures around 12 p.m. have the worst (73%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ATL to EYW?
- The scheduled ATL–EYW flight time averages 1h 53m over 646 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are ATL to EYW flights cancelled?
- 1.8% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from ATL to EYW?
- July 2025 was the roughest month in this dataset, with only 68% of arrivals on time. The best was September 2025 at 94%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 3,045 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.