Luis Munoz Marin International in October 2025

79.1%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 October 2025, reporting carriers scheduled 2,186 domestic departures from Luis Munoz Marin International (SJU). 79.1% left less than 15 minutes late and 78.5% reached their destination on time; 0.5% were cancelled.

Nationally that month, 80.0% of flights departed on time and 79.1% arrived on time, so SJU departures were 0.9 points below the national departure figure.

A year earlier, in October 2024, the airport had 2,325 departures with 81.5% leaving on time: a change of −2.4 points, with flights down 6%.

Flights arriving at SJU that month were on time 72.7% of the time (2,193 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 51%, air carrier 35% and national aviation system 12%.

On time 78.5%
Arrived 15+ minutes late 20.8%
Cancelled 0.5%
Diverted 0.3%

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

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

Measure	Oct 2025	Oct 2024	SJU, 12 months to Jul 2026	All reported flights, Oct 2025
Departed on time	79.1%	81.5%	74.5%	80.0%
Arrived on time	78.5%	81.9%	75.6%	79.1%
Cancelled	0.5%	2.5%	2.0%	0.5%
Average departure delay (late minutes only)	16.5 min	13.2 min	19.6 min	13.9 min
Scheduled departures a day	73	78	97	20,195
Scheduled departures	2,186	2,325	35,302	605,844

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	724	33%	75.4%	9.1 min	0.4%
AA American Airlines	287	13%	76.3%	9.9 min	0.0%
F9 Frontier Airlines	268	12%	75.7%	13.6 min	0.4%
WN Southwest Airlines	265	12%	83.0%	5.2 min	0.8%
UA United Airlines	258	12%	76.7%	0.0 min	1.6%
DL Delta Air Lines	250	11%	84.4%	-0.8 min	0.0%
NK Spirit Airlines	134	6%	88.1%	-2.9 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJU–MCO	San Juan to Orlando	446	79.8%	5.4 min	0.4%
SJU–JFK	San Juan to New York	269	81.8%	1.4 min	0.7%
SJU–MIA	San Juan to Miami	176	73.9%	10.1 min	0.0%
SJU–FLL	San Juan to Fort Lauderdale	146	87.0%	7.8 min	0.0%
SJU–EWR	San Juan to Newark	144	70.8%	5.5 min	2.8%
SJU–ATL	San Juan to Atlanta	133	82.0%	5.3 min	0.0%
SJU–BOS	San Juan to Boston	98	73.5%	8.2 min	1.0%
SJU–PHL	San Juan to Philadelphia	93	76.3%	1.2 min	0.0%
SJU–TPA	San Juan to Tampa	88	86.4%	8.0 min	0.0%
SJU–ORD	San Juan to Chicago	73	68.5%	6.7 min	0.0%
SJU–IAH	San Juan to Houston	70	78.6%	-2.4 min	0.0%
SJU–BWI	San Juan to Baltimore	61	91.8%	-1.8 min	1.6%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), October 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Oct 2025	Minutes
Air carrier	35.4%	34.0%	10,974
Late-arriving aircraft	50.6%	39.7%	15,717
National Aviation System	11.6%	22.9%	3,594
Extreme weather	2.3%	3.3%	728
Security	0.1%	0.1%	21

31,034 delay minutes on 454 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 October 2025?

79.1% of 2,186 scheduled domestic departures left less than 15 minutes late, and 78.5% reached their destination on time. The national figures that month were 80.0% and 79.1%.

How does that compare with a year earlier?

In October 2024, 81.5% of 2,325 departures left on time and 2.5% were cancelled, against 79.1% and 0.5% in October 2025.

Provenance

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