Norman Y. Mineta San Jose International in August 2025

82.5%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 August 2025, reporting carriers scheduled 3,885 domestic departures from Norman Y. Mineta San Jose International (SJC). 82.5% left less than 15 minutes late and 83.0% reached their destination on time; 0.4% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so SJC departures were 5.7 points above the national departure figure.

A year earlier, in August 2024, the airport had 4,614 departures with 85.1% leaving on time: a change of −2.6 points, with flights down 16%.

Flights arriving at SJC that month were on time 81.6% of the time (3,887 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 45%, air carrier 35% and national aviation system 20%.

On time 83.0%
Arrived 15+ minutes late 16.4%
Cancelled 0.4%
Diverted 0.2%

Every scheduled departure from SJC in August 2025, judged by arrival at the destination.

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

Measure	Aug 2025	Aug 2024	SJC, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	82.5%	85.1%	80.9%	76.8%
Arrived on time	83.0%	85.0%	81.9%	76.3%
Cancelled	0.4%	0.6%	0.7%	1.1%
Average departure delay (late minutes only)	10.5 min	9.0 min	10.9 min	17.6 min
Scheduled departures a day	130	154	119	20,079
Scheduled departures	3,885	4,614	43,338	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	2,324	60%	81.1%	3.0 min	0.2%
OO SkyWest Airlines	666	17%	91.3%	-7.4 min	0.0%
DL Delta Air Lines	231	6%	89.2%	-5.6 min	1.7%
AS Alaska Airlines	209	5%	78.5%	-0.3 min	1.4%
UA United Airlines	144	4%	73.6%	8.6 min	0.7%
AA American Airlines	140	4%	77.9%	27.7 min	1.4%
NK Spirit Airlines	75	2%	80.0%	9.4 min	0.0%
HA Hawaiian Airlines	62	2%	96.8%	-5.0 min	0.0%
F9 Frontier Airlines	29	1%	79.3%	9.4 min	0.0%
MQ Envoy Air	5	0%	100.0%	-10.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJC–SAN	San Jose to San Diego	441	72.3%	8.1 min	0.0%
SJC–SEA	San Jose to Seattle	395	80.0%	1.3 min	0.8%
SJC–LAX	San Jose to Los Angeles	391	88.2%	-6.0 min	0.0%
SJC–LAS	San Jose to Las Vegas	381	80.8%	5.5 min	0.0%
SJC–DEN	San Jose to Denver	232	72.0%	11.3 min	0.0%
SJC–SNA	San Jose to Santa Ana	219	86.3%	-1.0 min	0.5%
SJC–PHX	San Jose to Phoenix	208	84.6%	1.5 min	0.0%
SJC–BUR	San Jose to Burbank	205	82.4%	1.9 min	1.0%
SJC–SLC	San Jose to Salt Lake City	166	92.2%	-3.1 min	0.6%
SJC–PDX	San Jose to Portland	142	85.2%	-1.6 min	0.0%
SJC–ONT	San Jose to Ontario	110	84.5%	-1.9 min	0.0%
SJC–LGB	San Jose to Long Beach	106	90.6%	-4.1 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), August 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	34.5%	33.1%	11,902
Late-arriving aircraft	44.6%	40.5%	15,365
National Aviation System	20.4%	19.2%	7,043
Extreme weather	0.4%	7.0%	148
Security	0.0%	0.1%	0

34,458 delay minutes on 639 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 August 2025?

82.5% of 3,885 scheduled domestic departures left less than 15 minutes late, and 83.0% reached their destination on time. The national figures that month were 76.8% and 76.3%.

How does that compare with a year earlier?

In August 2024, 85.1% of 4,614 departures left on time and 0.6% were cancelled, against 82.5% and 0.4% in August 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2025; 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.