John F. Kennedy International in August 2023

74.2%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 2023, reporting carriers scheduled 11,130 domestic departures from John F. Kennedy International (JFK). 74.2% left less than 15 minutes late and 74.2% reached their destination on time; 1.7% were cancelled.

Nationally that month, 76.7% of flights departed on time and 76.9% arrived on time, so JFK departures were 2.5 points below the national departure figure.

Flights arriving at JFK that month were on time 74.9% of the time (11,130 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 45%, late-arriving aircraft 31% and national aviation system 22%.

On time 74.2%
Arrived 15+ minutes late 23.8%
Cancelled 1.7%
Diverted 0.3%

Every scheduled departure from JFK in August 2023, judged by arrival at the destination.

August 2023 against a year earlier, the airport's year and the nation

Measure	Aug 2023	Year earlier	JFK, 12 months to Jul 2026	All reported flights, Aug 2023
Departed on time	74.2%	—	75.5%	76.7%
Arrived on time	74.2%	—	72.8%	76.9%
Cancelled	1.7%	—	3.5%	1.5%
Average departure delay (late minutes only)	20.2 min	—	18.2 min	17.3 min
Scheduled departures a day	371	—	281	20,100
Scheduled departures	11,130	—	102,683	602,987

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	3,466	31%	58.2%	26.2 min	2.8%
DL Delta Air Lines	2,525	23%	82.6%	-5.6 min	0.7%
YX Republic Airline	1,588	14%	81.9%	-1.9 min	1.8%
9E Endeavor Air	1,577	14%	80.7%	-1.5 min	2.0%
AA American Airlines	1,222	11%	80.9%	4.8 min	0.7%
AS Alaska Airlines	372	3%	86.8%	-8.8 min	0.5%
OO SkyWest Airlines	349	3%	71.6%	9.8 min	2.3%
HA Hawaiian Airlines	31	0%	67.7%	5.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
JFK–LAX	New York to Los Angeles	877	72.3%	8.0 min	0.5%
JFK–SFO	New York to San Francisco	659	82.5%	-8.0 min	0.5%
JFK–BOS	New York to Boston	486	65.0%	16.4 min	2.5%
JFK–MIA	New York to Miami	479	71.6%	15.7 min	1.9%
JFK–MCO	New York to Orlando	431	63.1%	24.6 min	2.6%
JFK–RDU	New York to Raleigh/Durham	404	80.7%	-1.4 min	2.7%
JFK–CLT	New York to Charlotte	324	80.6%	-2.4 min	1.9%
JFK–FLL	New York to Fort Lauderdale	315	67.3%	12.9 min	2.2%
JFK–SJU	New York to San Juan	297	51.2%	42.3 min	2.7%
JFK–SEA	New York to Seattle	292	83.6%	-4.1 min	0.3%
JFK–ATL	New York to Atlanta	286	79.4%	-2.6 min	0.3%
JFK–BUF	New York to Buffalo	240	69.2%	11.9 min	1.7%

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 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2023	Minutes
Air carrier	44.6%	36.7%	93,038
Late-arriving aircraft	30.9%	42.2%	64,571
National Aviation System	21.7%	15.7%	45,252
Extreme weather	2.5%	5.1%	5,200
Security	0.3%	0.2%	678

208,739 delay minutes on 2,648 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 2023?

74.2% of 11,130 scheduled domestic departures left less than 15 minutes late, and 74.2% reached their destination on time. The national figures that month were 76.7% and 76.9%.

How does that compare with a year earlier?

August 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2023; 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.