Best Time to Fly EYW to ATL: On-Time Stats by Hour & Airline
Key West International → Hartsfield-Jackson Atlanta International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 85.5% of Key West (EYW) to Atlanta (ATL) flights arrived on time (1,460 scheduled flights). That is 7.9 points above the national 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 (75%).
The cancellation rate was 1.7% (US average 1.8%).
EYW to ATL 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 | 85.5% | 101 min | 1.7% | 1,460 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly EYW to ATL
On-time arrival % by scheduled departure hour (local time), 2,920 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 88.2% | 1.5% | 725 |
| 11am–12pm | 88.0% | 1.7% | 356 |
| 12pm–1pm | 82.9% | 2.9% | 374 |
| 1pm–2pm | 84.0% | 0.8% | 128 |
| 2pm–3pm | 79.6% | 2.4% | 504 |
| 3pm–4pm | 74.8% | 2.5% | 118 |
| 4pm–5pm | Limited data | 8 | |
| 5pm–6pm | Limited data | 24 | |
| 6pm–7pm | 80.0% | 1.8% | 675 |
| 7pm–8pm | Limited data | 8 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on EYW to ATL
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) | 84.6% | +0.2 pts | 3.7% | 54 |
| Christmas & New Year (Dec 20 - Jan 3) | 78.0% | -6.5 pts | 1.7% | 120 |
| Summer peak (Jun 15 - Aug 15) | 78.8% | -5.6 pts | 3.2% | 497 |
| All other days | 84.5% | — | 1.6% | 2,249 |
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).