Best Time to Fly ATL to EYW: On-Time Stats by Hour & Airline
Hartsfield-Jackson Atlanta International → Key West International
Data through July 2026 · Last updated October 18, 2026
1,460 flights were scheduled from Atlanta (ATL) to Key West (EYW) in the last 12 months, and 83.0% of those that flew arrived on time, 5.3 points above the US average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
Over 24 months, Thursday was the most reliable day (87% on time) and July the worst month (70%).
The cancellation rate was 1.4% (US average 1.8%).
ATL 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 |
|---|---|---|---|---|
| Delta Air Lines | 83.0% | 73 min | 1.4% | 1,460 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATL to EYW
On-time arrival % by scheduled departure hour (local time), 2,921 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 91.7% | 1.5% | 137 |
| 9am–10am | 85.3% | 1.9% | 595 |
| 10am–11am | 75.4% | 0.0% | 62 |
| 11am–12pm | 87.3% | 1.4% | 513 |
| 12pm–1pm | 74.0% | 1.2% | 163 |
| 1pm–2pm | Limited data | 18 | |
| 3pm–4pm | 78.5% | 1.6% | 700 |
| 4pm–5pm | Limited data | 8 | |
| 5pm–6pm | 76.4% | 2.6% | 343 |
| 6pm–7pm | 82.9% | 0.8% | 355 |
| 7pm–8pm | Limited data | 27 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ATL 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) | 78.8% | -4.9 pts | 0.0% | 54 |
| Christmas & New Year (Dec 20 - Jan 3) | 71.8% | -12.0 pts | 0.8% | 120 |
| Summer peak (Jun 15 - Aug 15) | 74.6% | -9.1 pts | 3.0% | 497 |
| All other days | 83.8% | — | 1.3% | 2,250 |
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).