Luis Munoz Marin International in October 2023

77.3%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 October 2023, reporting carriers scheduled 2,290 domestic departures from Luis Munoz Marin International (SJU). 77.3% left less than 15 minutes late and 78.3% reached their destination on time; 0.7% were cancelled.

Nationally that month, 83.8% of flights departed on time and 84.0% arrived on time, so SJU departures were 6.5 points below the national departure figure.

Flights arriving at SJU that month were on time 78.7% of the time (2,291 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 47%, air carrier 44% and national aviation system 8%.

On time 78.3%
Arrived 15+ minutes late 20.6%
Cancelled 0.7%
Diverted 0.4%

Every scheduled departure from SJU in October 2023, judged by arrival at the destination.

October 2023 against a year earlier, the airport's year and the nation

Measure	Oct 2023	Year earlier	SJU, 12 months to Jul 2026	All reported flights, Oct 2023
Departed on time	77.3%	—	74.5%	83.8%
Arrived on time	78.3%	—	75.6%	84.0%
Cancelled	0.7%	—	2.0%	0.4%
Average departure delay (late minutes only)	20.7 min	—	19.6 min	11.0 min
Scheduled departures a day	76	—	97	19,966
Scheduled departures	2,290	—	35,302	598,968

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	627	27%	65.1%	28.3 min	0.2%
NK Spirit Airlines	415	18%	77.8%	7.7 min	1.2%
F9 Frontier Airlines	288	13%	75.0%	13.7 min	2.4%
AA American Airlines	275	12%	83.3%	12.2 min	0.0%
DL Delta Air Lines	248	11%	91.9%	-9.6 min	0.4%
UA United Airlines	220	10%	91.4%	-6.7 min	0.5%
WN Southwest Airlines	217	9%	87.1%	0.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJU–MCO	San Juan to Orlando	463	76.2%	14.1 min	0.9%
SJU–JFK	San Juan to New York	215	76.7%	12.1 min	0.0%
SJU–MIA	San Juan to Miami	212	88.7%	1.4 min	0.0%
SJU–EWR	San Juan to Newark	155	84.5%	-5.9 min	0.6%
SJU–BOS	San Juan to Boston	148	77.0%	13.6 min	0.7%
SJU–ATL	San Juan to Atlanta	144	86.1%	-0.7 min	1.4%
SJU–FLL	San Juan to Fort Lauderdale	139	74.8%	6.9 min	0.0%
SJU–TPA	San Juan to Tampa	107	77.6%	15.5 min	0.0%
SJU–PHL	San Juan to Philadelphia	96	67.7%	33.4 min	1.0%
SJU–BWI	San Juan to Baltimore	95	80.0%	10.9 min	3.2%
SJU–BDL	San Juan to Hartford	74	67.6%	11.9 min	1.4%
SJU–CLT	San Juan to Charlotte	62	77.4%	7.9 min	0.0%

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), October 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Oct 2023	Minutes
Air carrier	43.7%	41.3%	18,606
Late-arriving aircraft	46.6%	40.5%	19,845
National Aviation System	7.8%	14.4%	3,312
Extreme weather	1.7%	3.7%	715
Security	0.2%	0.2%	95

42,573 delay minutes on 471 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 2023?

77.3% of 2,290 scheduled domestic departures left less than 15 minutes late, and 78.3% reached their destination on time. The national figures that month were 83.8% and 84.0%.

How does that compare with a year earlier?

October 2022 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 October 2023; 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.