Norman Y. Mineta San Jose International in May 2026

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 May 2026, reporting carriers scheduled 3,686 domestic departures from Norman Y. Mineta San Jose International (SJC). 80.4% left less than 15 minutes late and 81.2% reached their destination on time; 0.4% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so SJC departures were 3.3 points above the national departure figure.

A year earlier, in May 2025, the airport had 4,035 departures with 84.0% leaving on time: a change of −3.6 points, with flights down 9%.

Flights arriving at SJC that month were on time 79.0% of the time (3,655 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 47%, air carrier 32% and national aviation system 20%.

On time 81.2%
Arrived 15+ minutes late 18.2%
Cancelled 0.4%
Diverted 0.2%

Every scheduled departure from SJC in May 2026, judged by arrival at the destination.

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

Measure	May 2026	May 2025	SJC, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	80.4%	84.0%	80.9%	77.1%
Arrived on time	81.2%	84.1%	81.9%	77.6%
Cancelled	0.4%	0.3%	0.7%	0.9%
Average departure delay (late minutes only)	10.4 min	10.6 min	10.9 min	16.0 min
Scheduled departures a day	123	135	119	20,391
Scheduled departures	3,686	4,035	43,338	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	2,214	60%	77.3%	4.0 min	0.3%
OO SkyWest Airlines	520	14%	86.0%	-1.6 min	0.0%
DL Delta Air Lines	316	9%	92.4%	-9.2 min	0.9%
AS Alaska Airlines	285	8%	86.0%	-5.6 min	0.4%
AA American Airlines	162	4%	84.0%	-0.2 min	1.2%
UA United Airlines	148	4%	86.5%	-1.4 min	0.7%
F9 Frontier Airlines	40	1%	85.0%	5.0 min	0.0%
MQ Envoy Air	1	0%	100.0%	-7.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJC–SAN	San Jose to San Diego	439	65.8%	10.6 min	0.2%
SJC–LAX	San Jose to Los Angeles	382	88.5%	-3.6 min	0.5%
SJC–SEA	San Jose to Seattle	356	81.7%	-2.1 min	0.3%
SJC–LAS	San Jose to Las Vegas	303	79.5%	4.1 min	0.7%
SJC–PHX	San Jose to Phoenix	269	82.9%	4.2 min	0.4%
SJC–SNA	San Jose to Santa Ana	241	90.9%	-7.1 min	0.4%
SJC–DEN	San Jose to Denver	197	77.2%	3.5 min	0.5%
SJC–BUR	San Jose to Burbank	166	85.5%	-2.1 min	1.2%
SJC–SLC	San Jose to Salt Lake City	162	91.4%	-2.3 min	0.0%
SJC–LGB	San Jose to Long Beach	118	87.3%	-2.9 min	0.0%
SJC–PDX	San Jose to Portland	116	90.5%	-4.6 min	0.0%
SJC–ONT	San Jose to Ontario	110	83.6%	2.1 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), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	32.3%	33.0%	10,313
Late-arriving aircraft	46.6%	40.4%	14,873
National Aviation System	19.8%	20.5%	6,323
Extreme weather	1.2%	6.0%	370
Security	0.2%	0.1%	54

31,933 delay minutes on 671 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 SJC on time in May 2026?

80.4% of 3,686 scheduled domestic departures left less than 15 minutes late, and 81.2% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 84.0% of 4,035 departures left on time and 0.3% were cancelled, against 80.4% and 0.4% in May 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2026; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for SJC · methodology · corrections.