Norman Y. Mineta San Jose International in December 2023

86.7%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 December 2023, reporting carriers scheduled 4,207 domestic departures from Norman Y. Mineta San Jose International (SJC). 86.7% left less than 15 minutes late and 87.3% reached their destination on time; 0.3% were cancelled.

Nationally that month, 83.1% of flights departed on time and 83.8% arrived on time, so SJC departures were 3.6 points above the national departure figure.

Flights arriving at SJC that month were on time 87.6% of the time (4,198 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 40%, late-arriving aircraft 39% and national aviation system 17%.

On time 87.3%
Arrived 15+ minutes late 12.3%
Cancelled 0.3%
Diverted 0.1%

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

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

Measure	Dec 2023	Year earlier	SJC, 12 months to Jul 2026	All reported flights, Dec 2023
Departed on time	86.7%	—	80.9%	83.1%
Arrived on time	87.3%	—	81.9%	83.8%
Cancelled	0.3%	—	0.7%	0.4%
Average departure delay (late minutes only)	7.9 min	—	10.9 min	11.6 min
Scheduled departures a day	140	—	119	19,013
Scheduled departures	4,207	—	43,338	570,394

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	2,712	64%	86.8%	-0.2 min	0.3%
OO SkyWest Airlines	630	15%	85.9%	0.7 min	0.0%
AS Alaska Airlines	218	5%	86.2%	-5.4 min	0.9%
DL Delta Air Lines	196	5%	96.4%	-10.6 min	0.0%
UA United Airlines	155	4%	94.8%	-10.2 min	0.0%
NK Spirit Airlines	113	3%	82.3%	0.4 min	0.0%
AA American Airlines	98	2%	92.9%	-2.9 min	0.0%
HA Hawaiian Airlines	43	1%	74.4%	8.1 min	0.0%
MQ Envoy Air	42	1%	92.9%	-4.3 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SJC–SAN	San Jose to San Diego	481	85.7%	0.6 min	0.8%
SJC–LAX	San Jose to Los Angeles	412	84.7%	-1.3 min	0.0%
SJC–LAS	San Jose to Las Vegas	380	87.4%	-0.7 min	0.5%
SJC–SEA	San Jose to Seattle	351	83.8%	0.5 min	0.6%
SJC–DEN	San Jose to Denver	258	88.8%	-5.2 min	0.0%
SJC–SNA	San Jose to Santa Ana	249	89.6%	-2.9 min	0.4%
SJC–PHX	San Jose to Phoenix	247	86.6%	2.2 min	0.0%
SJC–PDX	San Jose to Portland	231	90.5%	-3.5 min	0.0%
SJC–BUR	San Jose to Burbank	211	87.2%	-1.4 min	0.5%
SJC–SLC	San Jose to Salt Lake City	152	92.8%	-5.4 min	0.0%
SJC–AUS	San Jose to Austin	141	84.4%	5.8 min	0.0%
SJC–ONT	San Jose to Ontario	123	89.4%	-2.3 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), December 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2023	Minutes
Air carrier	40.3%	37.1%	11,022
Late-arriving aircraft	39.2%	38.8%	10,717
National Aviation System	16.8%	17.6%	4,596
Extreme weather	3.7%	6.2%	1,018
Security	0.0%	0.3%	4

27,357 delay minutes on 518 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 December 2023?

86.7% of 4,207 scheduled domestic departures left less than 15 minutes late, and 87.3% reached their destination on time. The national figures that month were 83.1% and 83.8%.

How does that compare with a year earlier?

December 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 December 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.