Luis Munoz Marin International in January 2024

71.7%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 January 2024, reporting carriers scheduled 3,027 domestic departures from Luis Munoz Marin International (SJU). 71.7% left less than 15 minutes late and 70.1% reached their destination on time; 0.9% were cancelled.

Nationally that month, 74.0% of flights departed on time and 72.9% arrived on time, so SJU departures were 2.3 points below the national departure figure.

Flights arriving at SJU that month were on time 70.0% of the time (3,018 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 45%, air carrier 39% and national aviation system 16%.

On time 70.1%
Arrived 15+ minutes late 28.6%
Cancelled 0.9%
Diverted 0.4%

Every scheduled departure from SJU in January 2024, judged by arrival at the destination.

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

Measure	Jan 2024	Year earlier	SJU, 12 months to Jul 2026	All reported flights, Jan 2024
Departed on time	71.7%	—	74.5%	74.0%
Arrived on time	70.1%	—	75.6%	72.9%
Cancelled	0.9%	—	2.0%	3.7%
Average departure delay (late minutes only)	23.9 min	—	19.6 min	18.7 min
Scheduled departures a day	101	—	97	18,242
Scheduled departures	3,027	—	35,302	547,271

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	748	25%	70.9%	14.7 min	0.7%
F9 Frontier Airlines	516	17%	54.3%	33.5 min	1.6%
NK Spirit Airlines	448	15%	71.7%	21.4 min	0.0%
AA American Airlines	405	13%	68.4%	23.1 min	0.2%
DL Delta Air Lines	323	11%	87.0%	-4.1 min	0.0%
WN Southwest Airlines	299	10%	75.6%	8.1 min	0.0%
UA United Airlines	288	10%	71.9%	11.2 min	4.9%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJU–MCO	San Juan to Orlando	520	69.0%	22.7 min	0.4%
SJU–JFK	San Juan to New York	265	81.1%	1.1 min	0.0%
SJU–MIA	San Juan to Miami	222	71.6%	20.1 min	0.0%
SJU–ATL	San Juan to Atlanta	211	76.3%	9.1 min	0.5%
SJU–EWR	San Juan to Newark	200	73.5%	4.8 min	1.5%
SJU–FLL	San Juan to Fort Lauderdale	177	70.6%	26.7 min	0.0%
SJU–BOS	San Juan to Boston	168	77.4%	7.8 min	0.6%
SJU–PHL	San Juan to Philadelphia	161	57.8%	26.9 min	2.5%
SJU–BWI	San Juan to Baltimore	138	74.6%	16.5 min	0.0%
SJU–TPA	San Juan to Tampa	126	77.0%	8.5 min	0.0%
SJU–CLT	San Juan to Charlotte	111	78.4%	11.3 min	0.0%
SJU–ORD	San Juan to Chicago	101	70.3%	13.4 min	3.0%

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), January 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2024	Minutes
Air carrier	39.1%	32.6%	26,974
Late-arriving aircraft	44.7%	39.0%	30,806
National Aviation System	15.7%	17.9%	10,824
Extreme weather	0.2%	10.3%	138
Security	0.3%	0.2%	199

68,941 delay minutes on 866 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 SJU on time in January 2024?

71.7% of 3,027 scheduled domestic departures left less than 15 minutes late, and 70.1% reached their destination on time. The national figures that month were 74.0% and 72.9%.

How does that compare with a year earlier?

January 2023 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 January 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for SJU · methodology · corrections.