Luis Munoz Marin International in June 2026

81.3%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 June 2026, reporting carriers scheduled 3,095 domestic departures from Luis Munoz Marin International (SJU). 81.3% left less than 15 minutes late and 82.3% reached their destination on time; 0.6% were cancelled.

Nationally that month, 72.2% of flights departed on time and 72.8% arrived on time, so SJU departures were 9.1 points above the national departure figure.

A year earlier, in June 2025, the airport had 3,187 departures with 80.4% leaving on time: a change of +0.9 points, with flights down 3%.

Flights arriving at SJU that month were on time 75.5% of the time (3,100 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 61%, air carrier 27% and national aviation system 12%.

On time 82.3%
Arrived 15+ minutes late 16.8%
Cancelled 0.6%
Diverted 0.4%

Every scheduled departure from SJU in June 2026, judged by arrival at the destination.

June 2026 against a year earlier, the airport's year and the nation

Measure	Jun 2026	Jun 2025	SJU, 12 months to Jul 2026	All reported flights, Jun 2026
Departed on time	81.3%	80.4%	74.5%	72.2%
Arrived on time	82.3%	81.3%	75.6%	72.8%
Cancelled	0.6%	0.9%	2.0%	1.6%
Average departure delay (late minutes only)	14.6 min	16.2 min	19.6 min	20.6 min
Scheduled departures a day	103	106	97	20,253
Scheduled departures	3,095	3,187	35,302	607,577

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	1,180	38%	79.6%	5.7 min	0.7%
F9 Frontier Airlines	466	15%	80.9%	11.9 min	1.1%
WN Southwest Airlines	433	14%	80.1%	6.6 min	0.7%
AA American Airlines	390	13%	85.4%	-0.5 min	0.3%
UA United Airlines	330	11%	86.7%	-9.0 min	0.3%
DL Delta Air Lines	296	10%	89.2%	-5.8 min	0.3%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJU–MCO	San Juan to Orlando	601	79.5%	9.6 min	1.0%
SJU–JFK	San Juan to New York	289	82.7%	0.3 min	1.4%
SJU–MIA	San Juan to Miami	214	87.4%	0.1 min	0.0%
SJU–FLL	San Juan to Fort Lauderdale	192	80.7%	5.1 min	0.5%
SJU–PHL	San Juan to Philadelphia	180	83.9%	-0.4 min	1.7%
SJU–ATL	San Juan to Atlanta	175	87.4%	-3.3 min	0.0%
SJU–TPA	San Juan to Tampa	166	77.1%	9.5 min	0.6%
SJU–EWR	San Juan to Newark	161	82.0%	5.0 min	0.6%
SJU–BOS	San Juan to Boston	136	78.7%	7.6 min	0.0%
SJU–BWI	San Juan to Baltimore	109	88.1%	1.6 min	0.0%
SJU–BDL	San Juan to Hartford	90	81.1%	2.5 min	0.0%
SJU–IAH	San Juan to Houston	90	90.0%	-18.4 min	0.0%

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 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2026	Minutes
Air carrier	26.7%	30.8%	10,515
Late-arriving aircraft	60.9%	42.1%	23,965
National Aviation System	12.3%	20.3%	4,835
Extreme weather	0.1%	6.7%	28
Security	0.0%	0.1%	0

39,343 delay minutes on 519 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 2026?

81.3% of 3,095 scheduled domestic departures left less than 15 minutes late, and 82.3% reached their destination on time. The national figures that month were 72.2% and 72.8%.

How does that compare with a year earlier?

In June 2025, 80.4% of 3,187 departures left on time and 0.9% were cancelled, against 81.3% and 0.6% in June 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for June 2026; 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.