Luis Munoz Marin International in January 2025

73.0%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 2025, reporting carriers scheduled 3,208 domestic departures from Luis Munoz Marin International (SJU). 73.0% left less than 15 minutes late and 72.7% reached their destination on time; 1.5% were cancelled.

Nationally that month, 79.3% of flights departed on time and 78.6% arrived on time, so SJU departures were 6.3 points below the national departure figure.

A year earlier, in January 2024, the airport had 3,027 departures with 71.7% leaving on time: a change of +1.3 points, with flights up 6%.

Flights arriving at SJU that month were on time 71.6% of the time (3,199 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, air carrier 38% and national aviation system 20%.

On time 72.7%
Arrived 15+ minutes late 25.2%
Cancelled 1.5%
Diverted 0.6%

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

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

Measure	Jan 2025	Jan 2024	SJU, 12 months to Jul 2026	All reported flights, Jan 2025
Departed on time	73.0%	71.7%	74.5%	79.3%
Arrived on time	72.7%	70.1%	75.6%	78.6%
Cancelled	1.5%	0.9%	2.0%	3.0%
Average departure delay (late minutes only)	21.4 min	23.9 min	19.6 min	14.0 min
Scheduled departures a day	107	101	97	17,992
Scheduled departures	3,208	3,027	35,302	539,747

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	983	31%	70.9%	13.3 min	0.5%
F9 Frontier Airlines	512	16%	59.2%	28.0 min	2.1%
AA American Airlines	423	13%	74.9%	8.4 min	1.4%
DL Delta Air Lines	359	11%	76.3%	13.0 min	2.5%
NK Spirit Airlines	314	10%	80.9%	1.7 min	3.2%
WN Southwest Airlines	310	10%	80.0%	2.7 min	0.6%
UA United Airlines	307	10%	77.5%	9.4 min	2.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJU–MCO	San Juan to Orlando	529	77.5%	7.3 min	0.4%
SJU–JFK	San Juan to New York	336	75.6%	11.8 min	1.2%
SJU–MIA	San Juan to Miami	245	73.9%	11.8 min	0.0%
SJU–EWR	San Juan to Newark	219	68.5%	16.0 min	0.0%
SJU–FLL	San Juan to Fort Lauderdale	205	71.7%	15.5 min	0.0%
SJU–BOS	San Juan to Boston	197	70.6%	17.4 min	2.0%
SJU–ATL	San Juan to Atlanta	192	74.0%	4.3 min	4.2%
SJU–PHL	San Juan to Philadelphia	164	65.2%	38.0 min	3.0%
SJU–TPA	San Juan to Tampa	125	78.4%	5.4 min	0.0%
SJU–ORD	San Juan to Chicago	113	77.0%	6.2 min	0.0%
SJU–CLT	San Juan to Charlotte	110	73.6%	6.1 min	3.6%
SJU–BWI	San Juan to Baltimore	100	73.0%	3.8 min	7.0%

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), January 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2025	Minutes
Air carrier	38.1%	36.2%	24,088
Late-arriving aircraft	40.0%	34.7%	25,305
National Aviation System	20.3%	19.9%	12,862
Extreme weather	0.9%	9.1%	600
Security	0.6%	0.2%	353

63,208 delay minutes on 808 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 2025?

73.0% of 3,208 scheduled domestic departures left less than 15 minutes late, and 72.7% reached their destination on time. The national figures that month were 79.3% and 78.6%.

How does that compare with a year earlier?

In January 2024, 71.7% of 3,027 departures left on time and 0.9% were cancelled, against 73.0% and 1.5% in January 2025.

Provenance

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