Norman Y. Mineta San Jose International in September 2023

82.7%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 September 2023, reporting carriers scheduled 4,371 domestic departures from Norman Y. Mineta San Jose International (SJC). 82.7% left less than 15 minutes late and 84.4% reached their destination on time; 0.5% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so SJC departures were 2.2 points above the national departure figure.

Flights arriving at SJC that month were on time 82.2% of the time (4,370 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 43%, air carrier 40% and national aviation system 14%.

On time 84.4%
Arrived 15+ minutes late 15.0%
Cancelled 0.5%
Diverted 0.1%

Every scheduled departure from SJC in September 2023, judged by arrival at the destination.

September 2023 against a year earlier, the airport's year and the nation

Measure	Sep 2023	Year earlier	SJC, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	82.7%	—	80.9%	80.5%
Arrived on time	84.4%	—	81.9%	80.1%
Cancelled	0.5%	—	0.7%	1.2%
Average departure delay (late minutes only)	10.6 min	—	10.9 min	14.1 min
Scheduled departures a day	146	—	119	18,978
Scheduled departures	4,371	—	43,338	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	2,756	63%	82.3%	2.3 min	0.5%
OO SkyWest Airlines	512	12%	92.2%	-2.9 min	0.0%
AS Alaska Airlines	310	7%	90.0%	-5.8 min	0.0%
DL Delta Air Lines	230	5%	90.9%	-4.2 min	0.4%
AA American Airlines	174	4%	83.9%	1.1 min	0.6%
UA United Airlines	170	4%	93.5%	-13.4 min	0.0%
NK Spirit Airlines	105	2%	76.2%	23.6 min	0.0%
B6 JetBlue Airways	60	1%	51.7%	63.1 min	5.0%
HA Hawaiian Airlines	54	1%	85.2%	-5.2 min	5.6%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJC–SAN	San Jose to San Diego	485	83.3%	4.4 min	0.2%
SJC–SEA	San Jose to Seattle	419	84.7%	-1.8 min	0.0%
SJC–LAX	San Jose to Los Angeles	385	88.6%	-0.9 min	0.0%
SJC–LAS	San Jose to Las Vegas	364	73.1%	14.3 min	1.6%
SJC–BUR	San Jose to Burbank	252	85.3%	0.2 min	1.2%
SJC–DEN	San Jose to Denver	250	86.0%	-3.0 min	0.0%
SJC–SNA	San Jose to Santa Ana	221	89.1%	-0.4 min	0.0%
SJC–PHX	San Jose to Phoenix	216	80.6%	6.7 min	0.5%
SJC–PDX	San Jose to Portland	189	83.1%	0.2 min	0.0%
SJC–SLC	San Jose to Salt Lake City	170	89.4%	-1.4 min	0.6%
SJC–DFW	San Jose to Dallas/Fort Worth	137	86.1%	-6.7 min	0.7%
SJC–AUS	San Jose to Austin	134	83.6%	-0.1 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), September 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	39.6%	36.4%	15,125
Late-arriving aircraft	42.6%	38.3%	16,268
National Aviation System	14.1%	19.9%	5,406
Extreme weather	3.5%	5.1%	1,345
Security	0.2%	0.2%	61

38,205 delay minutes on 656 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 September 2023?

82.7% of 4,371 scheduled domestic departures left less than 15 minutes late, and 84.4% reached their destination on time. The national figures that month were 80.5% and 80.1%.

How does that compare with a year earlier?

September 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2023; 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.