John F. Kennedy International in August 2025

78.0%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In August 2025, reporting carriers scheduled 9,110 domestic departures from John F. Kennedy International (JFK). 78.0% left less than 15 minutes late and 78.0% reached their destination on time; 0.9% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so JFK departures were 1.2 points above the national departure figure.

A year earlier, in August 2024, the airport had 10,862 departures with 68.1% leaving on time: a change of +9.9 points, with flights down 16%.

Flights arriving at JFK that month were on time 78.1% of the time (9,112 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 34% and national aviation system 20%.

On time 78.0%
Arrived 15+ minutes late 20.7%
Cancelled 0.9%
Diverted 0.3%

Every scheduled departure from JFK in August 2025, judged by arrival at the destination.

August 2025 against a year earlier, the airport's year and the nation

Measure	Aug 2025	Aug 2024	JFK, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	78.0%	68.1%	75.5%	76.8%
Arrived on time	78.0%	63.5%	72.8%	76.3%
Cancelled	0.9%	6.4%	3.5%	1.1%
Average departure delay (late minutes only)	17.5 min	24.0 min	18.2 min	17.6 min
Scheduled departures a day	304	362	281	20,079
Scheduled departures	9,110	10,862	102,683	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	3,292	36%	71.9%	10.4 min	0.8%
DL Delta Air Lines	2,654	29%	83.5%	-3.6 min	0.8%
YX Republic Airline	1,361	15%	84.9%	-5.9 min	1.6%
AA American Airlines	1,134	12%	81.0%	1.1 min	0.8%
AS Alaska Airlines	329	4%	66.9%	14.7 min	0.9%
F9 Frontier Airlines	309	3%	66.7%	12.4 min	0.3%
HA Hawaiian Airlines	31	0%	74.2%	3.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
JFK–LAX	New York to Los Angeles	912	84.6%	-4.0 min	0.1%
JFK–SFO	New York to San Francisco	591	84.1%	-5.7 min	0.2%
JFK–BOS	New York to Boston	500	80.0%	3.3 min	1.0%
JFK–MCO	New York to Orlando	434	68.2%	14.8 min	1.4%
JFK–ATL	New York to Atlanta	375	77.1%	4.2 min	0.5%
JFK–MIA	New York to Miami	375	73.9%	12.8 min	1.3%
JFK–SJU	New York to San Juan	359	62.7%	19.5 min	0.8%
JFK–LAS	New York to Las Vegas	314	86.9%	-6.9 min	0.3%
JFK–FLL	New York to Fort Lauderdale	293	72.4%	13.4 min	1.0%
JFK–SEA	New York to Seattle	278	73.4%	2.3 min	0.7%
JFK–DCA	New York to Washington	217	77.9%	-0.4 min	2.3%
JFK–DFW	New York to Dallas/Fort Worth	217	74.7%	1.5 min	1.4%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), August 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	34.0%	33.1%	47,968
Late-arriving aircraft	42.3%	40.5%	59,613
National Aviation System	20.2%	19.2%	28,470
Extreme weather	3.2%	7.0%	4,571
Security	0.3%	0.1%	455

141,077 delay minutes on 1,890 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left JFK on time in August 2025?

78.0% of 9,110 scheduled domestic departures left less than 15 minutes late, and 78.0% reached their destination on time. The national figures that month were 76.8% and 76.3%.

How does that compare with a year earlier?

In August 2024, 68.1% of 10,862 departures left on time and 6.4% were cancelled, against 78.0% and 0.9% in August 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for JFK · methodology · corrections.