Luis Munoz Marin International in July 2024

69.3%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 July 2024, reporting carriers scheduled 3,570 domestic departures from Luis Munoz Marin International (SJU). 69.3% left less than 15 minutes late and 68.6% reached their destination on time; 1.8% were cancelled.

Nationally that month, 68.5% of flights departed on time and 68.1% arrived on time, so SJU departures were 0.8 points above the national departure figure.

Flights arriving at SJU that month were on time 63.9% of the time (3,568 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 48%, air carrier 39% and national aviation system 12%.

On time 68.6%
Arrived 15+ minutes late 29.0%
Cancelled 1.8%
Diverted 0.6%

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

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

Measure	Jul 2024	Year earlier	SJU, 12 months to Jul 2026	All reported flights, Jul 2024
Departed on time	69.3%	—	74.5%	68.5%
Arrived on time	68.6%	—	75.6%	68.1%
Cancelled	1.8%	—	2.0%	2.9%
Average departure delay (late minutes only)	26.5 min	—	19.6 min	24.9 min
Scheduled departures a day	119	—	97	21,154
Scheduled departures	3,570	—	35,302	634,613

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	986	28%	71.5%	18.3 min	0.7%
F9 Frontier Airlines	685	19%	53.9%	28.6 min	2.6%
NK Spirit Airlines	487	14%	69.2%	10.5 min	4.9%
WN Southwest Airlines	486	14%	74.5%	11.0 min	0.2%
AA American Airlines	337	9%	71.2%	28.3 min	0.3%
DL Delta Air Lines	314	9%	76.4%	15.9 min	1.6%
UA United Airlines	275	8%	70.9%	14.2 min	3.3%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJU–MCO	San Juan to Orlando	626	70.9%	15.4 min	1.3%
SJU–JFK	San Juan to New York	366	73.5%	16.6 min	0.5%
SJU–MIA	San Juan to Miami	284	71.8%	30.9 min	1.4%
SJU–FLL	San Juan to Fort Lauderdale	261	74.3%	16.0 min	1.5%
SJU–BOS	San Juan to Boston	239	75.3%	8.5 min	1.7%
SJU–EWR	San Juan to Newark	213	61.0%	26.9 min	2.3%
SJU–ATL	San Juan to Atlanta	204	63.2%	27.8 min	2.0%
SJU–TPA	San Juan to Tampa	171	67.3%	31.3 min	0.0%
SJU–PHL	San Juan to Philadelphia	136	41.9%	34.2 min	2.9%
SJU–ORD	San Juan to Chicago	128	63.3%	11.1 min	4.7%
SJU–BWI	San Juan to Baltimore	124	65.3%	16.3 min	2.4%
SJU–DFW	San Juan to Dallas/Fort Worth	121	76.0%	4.3 min	1.7%

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), July 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2024	Minutes
Air carrier	39.3%	36.6%	34,011
Late-arriving aircraft	47.7%	42.7%	41,337
National Aviation System	12.0%	16.0%	10,398
Extreme weather	0.9%	4.6%	776
Security	0.1%	0.1%	125

86,647 delay minutes on 1,037 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 July 2024?

69.3% of 3,570 scheduled domestic departures left less than 15 minutes late, and 68.6% reached their destination on time. The national figures that month were 68.5% and 68.1%.

How does that compare with a year earlier?

July 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 July 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.