Atlanta (ATL) to Fort Lauderdale (FLL): On-Time Performance
Data through July 2026
Atlanta (ATL) to Fort Lauderdale (FLL) effectively runs on two schedules. In September 2025, 85% of arrivals were on time; in June 2025 that fell to 54% — a 30-point seasonal swing. Across the full period the route averages 71% on-time against a national 78%. Morning departures also hold up better than evening ones (80% vs 61%), which matters most in the rough months.
- On-time
- 71%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 2.0%
- Flights/day
- 20
- last 12 months
- Duration
- 1h 53m
- scheduled
- Distance
- 581 mi
Best airline from ATL to FLL
5 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlinesmost reliable | 77% | 14 min | 0.8% | 629 |
| Delta Air Lines | 72% | 18 min | 1.6% | 8,838 |
| JetBlue Airways | 68% | 27 min | 2.9% | 763 |
| Spirit Airlines | 68% | 24 min | 2.6% | 2,956 |
| Frontier Airlines | 63% | 32 min | 3.0% | 1,416 |
Monthly on-time trend
Best time to fly from ATL to FLL
Aim for departures around 7 a.m. (86% on-time); avoid 11 p.m. departures (53%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 67% | 24 min |
| Tuesday | 78% | 15 min |
| Wednesdaybest | 79% | 13 min |
| Thursday | 72% | 18 min |
| Friday | 69% | 23 min |
| Saturday | 69% | 22 min |
| Sunday | 61% | 31 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft34%
- Airline operations38%
- National airspace system24%
- Weather4%
Frequently asked questions
- How often are flights from ATL to FLL delayed?
- 29% of ATL–FLL 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 21 minutes.
- Which airline is most reliable from ATL to FLL?
- Southwest Airlines has the best on-time record on this route at 77%, based on 629 flights. 5 airlines flew ATL–FLL frequently enough to compare in this period.
- What is the best time of day to fly from ATL to FLL?
- Departures around 7 a.m. have the best record (86% on-time), while departures around 11 p.m. have the worst (53%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ATL to FLL?
- The scheduled ATL–FLL flight time averages 1h 53m over 581 miles. Actual arrival times vary — flights on this route land 15+ minutes late 29% of the time.
- How often are ATL to FLL flights cancelled?
- 2% 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 FLL?
- June 2025 was the roughest month in this dataset, with only 54% of arrivals on time. The best was September 2025 at 85%. If your dates are flexible, that 30-point gap is worth planning around.
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Based on 14,602 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.