Luis Munoz Marin International in March 2025

78.2%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 March 2025, reporting carriers scheduled 3,580 domestic departures from Luis Munoz Marin International (SJU). 78.2% left less than 15 minutes late and 77.0% reached their destination on time; 0.8% were cancelled.

Nationally that month, 79.9% of flights departed on time and 79.3% arrived on time, so SJU departures were 1.7 points below the national departure figure.

A year earlier, in March 2024, the airport had 3,031 departures with 70.6% leaving on time: a change of +7.6 points, with flights up 18%.

Flights arriving at SJU that month were on time 74.7% of the time (3,582 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 48%, air carrier 28% and national aviation system 25%.

On time 77.0%
Arrived 15+ minutes late 21.6%
Cancelled 0.8%
Diverted 0.6%

Every scheduled departure from SJU in March 2025, judged by arrival at the destination.

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

Measure	Mar 2025	Mar 2024	SJU, 12 months to Jul 2026	All reported flights, Mar 2025
Departed on time	78.2%	70.6%	74.5%	79.9%
Arrived on time	77.0%	65.4%	75.6%	79.3%
Cancelled	0.8%	1.4%	2.0%	1.2%
Average departure delay (late minutes only)	17.0 min	27.5 min	19.6 min	14.9 min
Scheduled departures a day	119	101	97	20,029
Scheduled departures	3,580	3,031	35,302	600,872

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	1,105	31%	77.6%	8.1 min	0.2%
F9 Frontier Airlines	546	15%	67.8%	22.0 min	2.2%
AA American Airlines	466	13%	72.5%	8.7 min	0.4%
NK Spirit Airlines	398	11%	81.2%	3.3 min	0.5%
DL Delta Air Lines	374	10%	84.2%	1.6 min	1.3%
WN Southwest Airlines	368	10%	81.8%	5.6 min	0.8%
UA United Airlines	323	9%	78.0%	6.6 min	0.6%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJU–MCO	San Juan to Orlando	566	81.1%	7.4 min	0.7%
SJU–JFK	San Juan to New York	391	74.9%	7.2 min	1.3%
SJU–MIA	San Juan to Miami	247	74.1%	6.3 min	0.8%
SJU–FLL	San Juan to Fort Lauderdale	242	77.7%	9.2 min	0.0%
SJU–BOS	San Juan to Boston	232	75.4%	9.3 min	1.7%
SJU–ATL	San Juan to Atlanta	220	84.1%	-0.7 min	0.5%
SJU–EWR	San Juan to Newark	212	64.2%	18.8 min	0.5%
SJU–PHL	San Juan to Philadelphia	157	75.2%	18.4 min	2.5%
SJU–ORD	San Juan to Chicago	151	76.8%	4.0 min	0.0%
SJU–TPA	San Juan to Tampa	145	84.1%	6.1 min	0.7%
SJU–BWI	San Juan to Baltimore	142	78.9%	9.9 min	0.0%
SJU–CLT	San Juan to Charlotte	125	77.6%	5.5 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), March 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2025	Minutes
Air carrier	27.5%	33.0%	15,985
Late-arriving aircraft	47.7%	39.2%	27,718
National Aviation System	24.6%	21.9%	14,297
Extreme weather	0.2%	5.9%	109
Security	0.1%	0.1%	38

58,147 delay minutes on 772 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 March 2025?

78.2% of 3,580 scheduled domestic departures left less than 15 minutes late, and 77.0% reached their destination on time. The national figures that month were 79.9% and 79.3%.

How does that compare with a year earlier?

In March 2024, 70.6% of 3,031 departures left on time and 1.4% were cancelled, against 78.2% and 0.8% in March 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 2025; 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.