Luis Munoz Marin International in June 2025

80.4%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 June 2025, reporting carriers scheduled 3,187 domestic departures from Luis Munoz Marin International (SJU). 80.4% left less than 15 minutes late and 81.3% reached their destination on time; 0.9% were cancelled.

Nationally that month, 71.4% of flights departed on time and 70.3% arrived on time, so SJU departures were 9.0 points above the national departure figure.

A year earlier, in June 2024, the airport had 3,409 departures with 70.7% leaving on time: a change of +9.7 points, with flights down 7%.

Flights arriving at SJU that month were on time 72.4% of the time (3,189 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 44% and national aviation system 11%.

On time 81.3%
Arrived 15+ minutes late 17.4%
Cancelled 0.9%
Diverted 0.4%

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

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

Measure	Jun 2025	Jun 2024	SJU, 12 months to Jul 2026	All reported flights, Jun 2025
Departed on time	80.4%	70.7%	74.5%	71.4%
Arrived on time	81.3%	68.5%	75.6%	70.3%
Cancelled	0.9%	1.8%	2.0%	1.6%
Average departure delay (late minutes only)	16.2 min	24.9 min	19.6 min	22.1 min
Scheduled departures a day	106	114	97	20,386
Scheduled departures	3,187	3,409	35,302	611,575

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	1,005	32%	84.0%	1.2 min	0.1%
F9 Frontier Airlines	472	15%	63.8%	18.0 min	3.2%
WN Southwest Airlines	452	14%	86.1%	-1.1 min	0.0%
AA American Airlines	337	11%	80.4%	21.2 min	1.2%
UA United Airlines	310	10%	83.2%	-2.1 min	1.9%
NK Spirit Airlines	307	10%	85.3%	-9.0 min	0.3%
DL Delta Air Lines	304	10%	87.2%	-9.0 min	1.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJU–MCO	San Juan to Orlando	587	84.5%	-0.4 min	0.7%
SJU–JFK	San Juan to New York	350	82.6%	-1.5 min	1.1%
SJU–MIA	San Juan to Miami	207	78.7%	15.6 min	2.9%
SJU–ATL	San Juan to Atlanta	202	79.2%	0.2 min	1.0%
SJU–FLL	San Juan to Fort Lauderdale	190	83.7%	1.1 min	0.0%
SJU–EWR	San Juan to Newark	180	72.2%	15.5 min	3.3%
SJU–BOS	San Juan to Boston	163	85.3%	-1.5 min	0.0%
SJU–TPA	San Juan to Tampa	139	77.0%	6.0 min	0.0%
SJU–BWI	San Juan to Baltimore	134	76.9%	8.8 min	0.0%
SJU–PHL	San Juan to Philadelphia	133	66.9%	27.4 min	1.5%
SJU–ORD	San Juan to Chicago	116	86.2%	15.1 min	0.0%
SJU–IAH	San Juan to Houston	104	88.5%	-10.4 min	1.0%

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), June 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2025	Minutes
Air carrier	43.6%	31.6%	19,742
Late-arriving aircraft	44.4%	40.6%	20,077
National Aviation System	10.9%	20.9%	4,932
Extreme weather	0.6%	6.9%	286
Security	0.4%	0.2%	196

45,233 delay minutes on 553 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 June 2025?

80.4% of 3,187 scheduled domestic departures left less than 15 minutes late, and 81.3% reached their destination on time. The national figures that month were 71.4% and 70.3%.

How does that compare with a year earlier?

In June 2024, 70.7% of 3,409 departures left on time and 1.8% were cancelled, against 80.4% and 0.9% in June 2025.

Provenance

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