Luis Munoz Marin International in March 2026

69.4%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 March 2026, reporting carriers scheduled 3,441 domestic departures from Luis Munoz Marin International (SJU). 69.4% left less than 15 minutes late and 73.1% reached their destination on time; 2.1% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so SJU departures were 3.4 points below the national departure figure.

A year earlier, in March 2025, the airport had 3,580 departures with 78.2% leaving on time: a change of −8.8 points, with flights down 4%.

Flights arriving at SJU that month were on time 66.0% of the time (3,442 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 58%, air carrier 28% and national aviation system 13%.

On time 73.1%
Arrived 15+ minutes late 24.2%
Cancelled 2.1%
Diverted 0.6%

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

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

Measure	Mar 2026	Mar 2025	SJU, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	69.4%	78.2%	74.5%	72.8%
Arrived on time	73.1%	77.0%	75.6%	73.2%
Cancelled	2.1%	0.8%	2.0%	2.9%
Average departure delay (late minutes only)	21.4 min	17.0 min	19.6 min	20.3 min
Scheduled departures a day	115	119	97	20,403
Scheduled departures	3,441	3,580	35,302	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
B6 JetBlue Airways	1,080	31%	74.1%	10.8 min	1.0%
AA American Airlines	564	16%	80.3%	-0.3 min	0.2%
NK Spirit Airlines	420	12%	50.5%	25.5 min	10.0%
F9 Frontier Airlines	381	11%	65.1%	18.1 min	2.4%
DL Delta Air Lines	357	10%	85.4%	-2.8 min	1.4%
UA United Airlines	327	10%	85.3%	0.7 min	0.3%
WN Southwest Airlines	312	9%	70.5%	12.2 min	0.6%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJU–MCO	San Juan to Orlando	517	70.2%	14.9 min	1.9%
SJU–JFK	San Juan to New York	305	82.3%	2.1 min	0.7%
SJU–MIA	San Juan to Miami	278	76.3%	6.5 min	0.7%
SJU–BOS	San Juan to Boston	235	74.0%	10.9 min	1.7%
SJU–FLL	San Juan to Fort Lauderdale	233	61.4%	26.6 min	1.3%
SJU–ATL	San Juan to Atlanta	229	70.7%	10.7 min	3.1%
SJU–PHL	San Juan to Philadelphia	203	60.6%	22.8 min	3.0%
SJU–EWR	San Juan to Newark	188	73.4%	12.9 min	1.6%
SJU–ORD	San Juan to Chicago	177	68.4%	2.0 min	6.8%
SJU–TPA	San Juan to Tampa	150	73.3%	4.8 min	4.0%
SJU–CLT	San Juan to Charlotte	135	88.1%	-6.8 min	0.0%
SJU–DFW	San Juan to Dallas/Fort Worth	113	79.6%	-10.4 min	3.5%

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), March 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	28.3%	33.5%	17,258
Late-arriving aircraft	58.3%	39.3%	35,568
National Aviation System	13.1%	21.0%	7,983
Extreme weather	0.2%	5.9%	130
Security	0.1%	0.2%	81

61,020 delay minutes on 834 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 March 2026?

69.4% of 3,441 scheduled domestic departures left less than 15 minutes late, and 73.1% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 78.2% of 3,580 departures left on time and 0.8% were cancelled, against 69.4% and 2.1% in March 2026.

Provenance

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