San Diego International in October 2025

73.0%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 October 2025, reporting carriers scheduled 8,687 domestic departures from San Diego International (SAN). 73.0% left less than 15 minutes late and 78.1% reached their destination on time; 0.9% were cancelled.

Nationally that month, 80.0% of flights departed on time and 79.1% arrived on time, so SAN departures were 7.0 points below the national departure figure.

A year earlier, in October 2024, the airport had 8,377 departures with 76.4% leaving on time: a change of −3.4 points, with flights up 4%.

Flights arriving at SAN that month were on time 72.6% of the time (8,689 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 50%, air carrier 28% and national aviation system 18%.

On time 78.1%
Arrived 15+ minutes late 20.8%
Cancelled 0.9%
Diverted 0.2%

Every scheduled departure from SAN in October 2025, judged by arrival at the destination.

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

Measure	Oct 2025	Oct 2024	SAN, 12 months to Jul 2026	All reported flights, Oct 2025
Departed on time	73.0%	76.4%	73.5%	80.0%
Arrived on time	78.1%	70.3%	76.1%	79.1%
Cancelled	0.9%	1.3%	1.3%	0.5%
Average departure delay (late minutes only)	16.8 min	16.9 min	16.6 min	13.9 min
Scheduled departures a day	290	279	275	20,195
Scheduled departures	8,687	8,377	100,196	605,844

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	3,304	38%	73.9%	5.3 min	0.4%
OO SkyWest Airlines	1,257	14%	77.3%	3.9 min	2.1%
AS Alaska Airlines	1,083	12%	77.5%	3.4 min	1.8%
UA United Airlines	926	11%	84.6%	-1.8 min	0.2%
DL Delta Air Lines	851	10%	89.9%	0.9 min	0.4%
AA American Airlines	810	9%	79.1%	8.7 min	1.0%
F9 Frontier Airlines	208	2%	76.0%	5.1 min	1.4%
B6 JetBlue Airways	151	2%	79.5%	-4.3 min	1.3%
HA Hawaiian Airlines	84	1%	64.3%	20.8 min	2.4%
NK Spirit Airlines	13	0%	100.0%	-10.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SAN–SFO	San Diego to San Francisco	662	64.4%	14.6 min	1.4%
SAN–PHX	San Diego to Phoenix	546	71.2%	12.9 min	0.9%
SAN–LAS	San Diego to Las Vegas	541	72.6%	7.2 min	1.3%
SAN–DEN	San Diego to Denver	531	80.2%	0.4 min	0.6%
SAN–SJC	San Diego to San Jose	433	73.7%	3.9 min	0.9%
SAN–SMF	San Diego to Sacramento	421	76.5%	6.4 min	0.0%
SAN–ORD	San Diego to Chicago	357	82.1%	-3.3 min	1.1%
SAN–SEA	San Diego to Seattle	348	80.5%	6.4 min	2.3%
SAN–DFW	San Diego to Dallas/Fort Worth	296	76.7%	7.9 min	2.4%
SAN–OAK	San Diego to Oakland	271	71.2%	8.0 min	0.0%
SAN–SLC	San Diego to Salt Lake City	238	85.3%	0.5 min	0.0%
SAN–ATL	San Diego to Atlanta	233	90.6%	-3.2 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), October 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Oct 2025	Minutes
Air carrier	28.0%	34.0%	31,554
Late-arriving aircraft	49.7%	39.7%	55,944
National Aviation System	17.8%	22.9%	20,054
Extreme weather	4.0%	3.3%	4,529
Security	0.5%	0.1%	591

112,672 delay minutes on 1,803 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 SAN on time in October 2025?

73.0% of 8,687 scheduled domestic departures left less than 15 minutes late, and 78.1% reached their destination on time. The national figures that month were 80.0% and 79.1%.

How does that compare with a year earlier?

In October 2024, 76.4% of 8,377 departures left on time and 1.3% were cancelled, against 73.0% and 0.9% in October 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for October 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for SAN · methodology · corrections.