Airport month record

FLLAUG

Fort Lauderdale-Hollywood International in August 2025

Departures: 6,561
Month: August 2025
National, same month: 77.4%
Carriers: 9

Historical statistics for August 2025, not live status or a forecast for this year’s August. For today’s conditions at FLL, see live FAA status.

FLL in August sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.4%. The late ones land a little over an hour behind schedule. That rests on 6,561 flights, of which Delta Air Lines flew 941 at 78.8% on time.

Delta Air Lines is the most reliable of the six carriers covered here at 78.8% on time across 941 flights.

On time

74.6%

Arrivals under 15 minutes late, of 6,500 completed departures

Avg delay

73 min

Across delayed arrivals only, not all flights

Cancelled

0.55%

Nationally in August: 1.08%

Whole year

71.5%

FLL across all twelve months

These figures cover 6,561 departures from Fort Lauderdale-Hollywood International in August 2025. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.

Against the year

August next to FLL's other months

Against FLL's own year, August ran 3 points better than the twelve-month rate of 71.5%, which makes it number five of twelve months, best first. Cancellations were unusually low for FLL in August, at 0.55% against 2.22% across the year. Either side of it, July ran 71.4% on time and September 82.8%, so a trip moved by a few weeks would have landed in a better stretch.

FLL month by month
Month	Flights	On time	Avg delay	Cancelled	Grade
July 2025	6,944	71.4%	88 min	2.23%	C
August 2025 (this page)	6,561	74.6%	73 min	0.55%	C+
September 2025	5,663	82.8%	75 min	0.42%	B+
October 2025	6,591	80.3%	65 min	0.39%	B+
November 2025	7,609	77.6%	72 min	2.42%	B
December 2025	8,886	64.9%	71 min	2.07%	D
January 2026	8,607	71.1%	67 min	4.76%	C−
February 2026	8,251	67.3%	67 min	3.95%	C−
March 2026	9,928	59.7%	83 min	4.66%	D−
April 2026	8,610	69.0%	65 min	1.06%	C
May 2026	6,437	74.9%	61 min	0.53%	C+
June 2026	6,077	74.3%	76 min	1.14%	C

Departure window

The best time of day to leave FLL in August

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 35 points, against 11 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am1,329 flights93.7%
8am–11am840 flights90.3%
11am–2pm1,094 flights77.0%
2pm–5pm1,043 flights61.7%
5pm–8pm1,180 flights58.9%
8pm–5am1,075 flights66.2%

Scale runs 50% to 100%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is where this operation falls apart: 58.9% on time, against 93.7% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 1,329 flights scheduled in it.

Across the week, Tuesday is the strongest day at 86.9% on time and Sunday the weakest at 68.4%. 19 points is a smaller lever than departure hour, but it is free.

Carrier by carrier

Which airlines ran best at FLL in August

The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 78.8% of the time; American Airlines manages 68.0%. Sample sizes sit next to every figure, because a two-point gap across 467 flights means less than a ten-point one.

Carriers at FLL in August 2025
Airline	Flights	On time	Avg delay	Cancelled	Grade
Spirit Airlines	1,839	77.1%	67 min	0.16%	B+
JetBlue Airways	1,499	69.9%	71 min	0.27%	C+
Delta Air Lines	941	78.8%	80 min	0.85%	B+
Southwest Airlines	818	74.9%	61 min	0.24%	C+
United Airlines	555	78.8%	78 min	0.54%	B+
American Airlines	467	68.0%	105 min	2.57%	C
Allegiant Airthin sample	295	76.2%	71 min	0.00%	B+
Frontier Airlinesthin sample	116	69.6%	77 min	3.45%	C−
Alaska Airlinesthin sample	31	45.2%	46 min	0.00%	F+

Delta leads American by 11 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.

Route by route

Busiest routes out of FLL in August

Routes from FLL in August 2025
Route	Flights	On time	Avg delay	Cancelled	Grade
FLL to ATL · Atlanta	495	74.6%	57 min	0.61%	C+
FLL to EWR · Newarkthin sample	357	66.0%	82 min	0.28%	C+
FLL to LGA · New Yorkthin sample	328	77.5%	69 min	0.61%	B+
FLL to JFK · New Yorkthin sample	294	72.2%	91 min	1.02%	C
FLL to PHL · Philadelphiathin sample	253	72.6%	92 min	1.58%	C
FLL to BWI · Baltimorethin sample	245	77.8%	53 min	0.41%	B+
FLL to CLT · Charlottethin sample	244	76.5%	73 min	0.41%	B+
FLL to BOS · Bostonthin sample	240	69.6%	67 min	0.00%	C+
FLL to DTW · Detroitthin sample	207	81.6%	104 min	0.00%	B+
FLL to DFW · Dallas-Fort Worththin sample	203	64.4%	91 min	3.94%	D−
FLL to ORD · Chicagothin sample	203	76.9%	116 min	0.49%	B+
FLL to SJU · San Juanthin sample	195	70.3%	63 min	1.54%	C
FLL to IAH · Houstonthin sample	194	77.7%	96 min	0.52%	B+
FLL to DCA · Washingtonthin sample	173	62.4%	64 min	0.58%	D+
FLL to LAX · Los Angelesthin sample	163	84.7%	100 min	0.00%	B+
FLL to BNA · Nashvillethin sample	158	78.5%	57 min	0.00%	B+
FLL to MCO · Orlandothin sample	119	75.6%	80 min	0.00%	B+
FLL to DEN · Denverthin sample	116	78.9%	66 min	0.86%	B+
FLL to TPA · Tampathin sample	104	79.8%	58 min	0.00%	B+
FLL to RDU · Raleighthin sample	93	72.2%	80 min	2.15%	C
FLL to MSY · New Orleansthin sample	90	76.7%	37 min	0.00%	B+
FLL to LAS · Las Vegasthin sample	89	76.4%	38 min	0.00%	B+
FLL to MDW · Chicagothin sample	85	70.2%	64 min	0.00%	C+
FLL to SFO · San Franciscothin sample	81	77.5%	35 min	1.23%	B
FLL to CVG · Cincinnatithin sample	76	68.4%	65 min	0.00%	C+

Delay causes

What held FLL up in August

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 121,000 reported delay minutes.

Late-arriving aircraft
39%
National Airspace System
27%
Carrier
27%
Extreme weather
6%
Security
0%

39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 121,000 reported delay minutes here, that single category outweighs weather by 6 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 120,616 reported delay minutes.

Cancellations are rare at 0.55%, below the national 1.08% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.2% of arrivals land a full hour or more behind schedule, against 8.2% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

What to do with this

Flying from FLL in August

For a August trip through FLL: expect 74.6% on time and 0.55% cancelled, going by August 2025. The 5am–8am window was the strongest part of the day.

Fort Lauderdale-Hollywood International (FLL), the whole year
FLL in July71.4%
FLL in September82.8%
FLL in October80.3%
FLL in November77.6%
FLL in December64.9%
FLL in January71.1%
FLL in February67.3%
FLL in March59.7%
FLL in April69.0%
FLL in May74.9%
FLL in June74.3%

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures