John F. Kennedy International in September 2024

86.1%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 September 2024, reporting carriers scheduled 10,376 domestic departures from John F. Kennedy International (JFK). 86.1% left less than 15 minutes late and 84.7% reached their destination on time; 0.2% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so JFK departures were 1.7 points above the national departure figure.

A year earlier, in September 2023, the airport had 10,760 departures with 70.6% leaving on time: a change of +15.5 points, with flights down 4%.

Flights arriving at JFK that month were on time 85.1% of the time (10,360 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 49%, national aviation system 27% and late-arriving aircraft 21%.

On time 84.7%
Arrived 15+ minutes late 14.9%
Cancelled 0.2%
Diverted 0.1%

Every scheduled departure from JFK in September 2024, judged by arrival at the destination.

September 2024 against a year earlier, the airport's year and the nation

Measure	Sep 2024	Sep 2023	JFK, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	86.1%	70.6%	75.5%	84.4%
Arrived on time	84.7%	69.3%	72.8%	83.9%
Cancelled	0.2%	5.3%	3.5%	0.6%
Average departure delay (late minutes only)	10.0 min	23.7 min	18.2 min	10.6 min
Scheduled departures a day	346	359	281	19,421
Scheduled departures	10,376	10,760	102,683	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	2,901	28%	81.6%	-1.6 min	0.3%
DL Delta Air Lines	2,541	24%	84.4%	-3.9 min	0.3%
YX Republic Airline	1,570	15%	86.4%	-3.8 min	0.1%
9E Endeavor Air	1,411	14%	89.3%	-8.0 min	0.2%
AA American Airlines	1,221	12%	84.7%	1.3 min	0.2%
AS Alaska Airlines	300	3%	89.3%	-10.2 min	0.0%
OO SkyWest Airlines	284	3%	85.6%	-2.9 min	0.0%
F9 Frontier Airlines	118	1%	77.1%	8.3 min	0.8%
HA Hawaiian Airlines	30	0%	83.3%	-2.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
JFK–LAX	New York to Los Angeles	857	87.5%	-9.4 min	0.0%
JFK–SFO	New York to San Francisco	547	89.4%	-10.2 min	0.0%
JFK–BOS	New York to Boston	507	78.5%	2.7 min	0.0%
JFK–MIA	New York to Miami	409	82.4%	3.5 min	0.2%
JFK–CLT	New York to Charlotte	357	83.2%	5.3 min	0.6%
JFK–RDU	New York to Raleigh/Durham	330	84.5%	-1.6 min	0.0%
JFK–ATL	New York to Atlanta	325	78.2%	7.6 min	0.3%
JFK–LAS	New York to Las Vegas	315	86.0%	-10.8 min	0.0%
JFK–MCO	New York to Orlando	307	80.1%	2.7 min	0.0%
JFK–SJU	New York to San Juan	272	86.4%	-5.2 min	0.0%
JFK–FLL	New York to Fort Lauderdale	270	76.7%	3.0 min	0.0%
JFK–SEA	New York to Seattle	270	87.0%	-10.9 min	0.0%

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), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	49.1%	38.6%	48,926
Late-arriving aircraft	21.4%	38.4%	21,264
National Aviation System	26.9%	18.2%	26,758
Extreme weather	2.5%	4.8%	2,529
Security	0.1%	0.1%	99

99,576 delay minutes on 1,547 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 September 2024?

86.1% of 10,376 scheduled domestic departures left less than 15 minutes late, and 84.7% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 70.6% of 10,760 departures left on time and 5.3% were cancelled, against 86.1% and 0.2% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; 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.