Best Time to Fly ATL to FLL: On-Time Stats by Hour & Airline
Hartsfield-Jackson Atlanta International → Fort Lauderdale-Hollywood International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 70.8% of Atlanta (ATL) to Fort Lauderdale (FLL) flights arrived on time (7,265 scheduled flights). That is 6.9 points below the national average of 77.6%.
Delta Air Lines was the most punctual of the 4 airlines on the route at 74.0%, while Frontier Airlines trailed at 64.4%.
September has been the best month (82% on time) and Sunday the weakest day of the week (61%).
2.3% of flights were cancelled, versus 1.8% nationally.
ATL to FLL 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 | 74.0% | 56 min | 1.7% | 4,315 |
| JetBlue | 68.3% | 82 min | 2.9% | 763 |
| Spirit Airlines | 65.5% | 70 min | 4.0% | 1,216 |
| Frontier Airlines | 64.4% | 77 min | 2.5% | 970 |
| Southwest Airlines | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATL to FLL
On-time arrival % by scheduled departure hour (local time), 13,966 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 81.8% | 3.9% | 642 |
| 6am–7am | 79.7% | 1.7% | 231 |
| 7am–8am | 86.4% | 2.2% | 965 |
| 8am–9am | 84.1% | 2.6% | 936 |
| 9am–10am | 72.8% | 1.9% | 1,060 |
| 10am–11am | 78.8% | 1.5% | 991 |
| 11am–12pm | 73.7% | 1.8% | 795 |
| 12pm–1pm | 73.8% | 0.7% | 858 |
| 1pm–2pm | 72.4% | 2.2% | 356 |
| 2pm–3pm | 72.0% | 1.3% | 869 |
| 3pm–4pm | 65.9% | 0.7% | 873 |
| 4pm–5pm | 63.4% | 1.2% | 941 |
| 5pm–6pm | 64.0% | 2.2% | 994 |
| 6pm–7pm | 60.5% | 1.9% | 377 |
| 7pm–8pm | 61.8% | 1.0% | 983 |
| 8pm–9pm | 60.7% | 2.2% | 365 |
| 9pm–10pm | 58.0% | 3.2% | 664 |
| 10pm–11pm | 66.2% | 1.8% | 991 |
| 11pm–12am | 53.4% | 2.7% | 75 |
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 FLL
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) | 69.5% | -4.1 pts | 1.1% | 278 |
| Christmas & New Year (Dec 20 - Jan 3) | 55.7% | -17.8 pts | 2.3% | 654 |
| Summer peak (Jun 15 - Aug 15) | 63.9% | -9.6 pts | 2.5% | 2,246 |
| All other days | 73.5% | — | 1.7% | 10,788 |
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).