John F. Kennedy International in December 2024

75.2%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 December 2024, reporting carriers scheduled 10,268 domestic departures from John F. Kennedy International (JFK). 75.2% left less than 15 minutes late and 75.2% reached their destination on time; 0.5% were cancelled.

Nationally that month, 77.8% of flights departed on time and 78.1% arrived on time, so JFK departures were 2.6 points below the national departure figure.

A year earlier, in December 2023, the airport had 10,413 departures with 80.1% leaving on time: a change of −4.9 points, with flights down 1%.

Flights arriving at JFK that month were on time 74.8% of the time (10,271 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 38%, air carrier 37% and national aviation system 22%.

On time 75.2%
Arrived 15+ minutes late 24.1%
Cancelled 0.5%
Diverted 0.3%

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

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

Measure	Dec 2024	Dec 2023	JFK, 12 months to Jul 2026	All reported flights, Dec 2024
Departed on time	75.2%	80.1%	75.5%	77.8%
Arrived on time	75.2%	83.2%	72.8%	78.1%
Cancelled	0.5%	0.5%	3.5%	0.7%
Average departure delay (late minutes only)	18.0 min	13.9 min	18.2 min	16.6 min
Scheduled departures a day	342	347	281	19,686
Scheduled departures	10,268	10,413	102,683	590,581

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	3,141	31%	66.4%	14.2 min	1.0%
DL Delta Air Lines	2,574	25%	78.7%	2.3 min	0.0%
YX Republic Airline	1,622	16%	79.0%	3.1 min	0.7%
AA American Airlines	1,156	11%	80.8%	1.6 min	0.1%
9E Endeavor Air	1,001	10%	80.5%	4.8 min	0.4%
AS Alaska Airlines	356	3%	80.1%	-5.3 min	0.3%
OO SkyWest Airlines	201	2%	75.6%	25.3 min	1.0%
F9 Frontier Airlines	186	2%	69.9%	11.8 min	0.0%
HA Hawaiian Airlines	31	0%	51.6%	14.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
JFK–LAX	New York to Los Angeles	875	88.9%	-9.1 min	0.0%
JFK–SFO	New York to San Francisco	550	80.4%	-3.2 min	0.0%
JFK–MCO	New York to Orlando	453	68.2%	14.8 min	0.2%
JFK–MIA	New York to Miami	449	64.8%	13.7 min	0.4%
JFK–BOS	New York to Boston	404	68.6%	13.6 min	2.7%
JFK–FLL	New York to Fort Lauderdale	393	66.2%	13.1 min	0.8%
JFK–SJU	New York to San Juan	384	63.8%	18.1 min	0.3%
JFK–ATL	New York to Atlanta	354	69.8%	13.9 min	0.3%
JFK–RDU	New York to Raleigh/Durham	320	73.8%	7.8 min	0.9%
JFK–LAS	New York to Las Vegas	307	84.0%	-2.5 min	0.0%
JFK–CLT	New York to Charlotte	274	83.2%	-1.4 min	0.7%
JFK–TPA	New York to Tampa	256	70.3%	13.3 min	0.4%

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), December 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2024	Minutes
Air carrier	37.4%	34.3%	63,995
Late-arriving aircraft	38.0%	40.2%	65,037
National Aviation System	21.8%	17.8%	37,287
Extreme weather	2.5%	7.5%	4,235
Security	0.3%	0.2%	511

171,065 delay minutes on 2,473 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 December 2024?

75.2% of 10,268 scheduled domestic departures left less than 15 minutes late, and 75.2% reached their destination on time. The national figures that month were 77.8% and 78.1%.

How does that compare with a year earlier?

In December 2023, 80.1% of 10,413 departures left on time and 0.5% were cancelled, against 75.2% and 0.5% in December 2024.

Provenance

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