San Diego International in July 2026

65.3%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 July 2026, reporting carriers scheduled 9,345 domestic departures from San Diego International (SAN). 65.3% left less than 15 minutes late and 66.7% reached their destination on time; 1.3% were cancelled.

Nationally that month, 68.8% of flights departed on time and 69.4% arrived on time, so SAN departures were 3.5 points below the national departure figure.

A year earlier, in July 2025, the airport had 8,776 departures with 72.8% leaving on time: a change of −7.5 points, with flights up 6%.

Flights arriving at SAN that month were on time 64.3% of the time (9,345 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 47%, air carrier 27% and national aviation system 24%.

On time 66.7%
Arrived 15+ minutes late 31.3%
Cancelled 1.3%
Diverted 0.7%

Every scheduled departure from SAN in July 2026, judged by arrival at the destination.

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

Measure	Jul 2026	Jul 2025	SAN, 12 months to Jul 2026	All reported flights, Jul 2026
Departed on time	65.3%	72.8%	73.5%	68.8%
Arrived on time	66.7%	72.5%	76.1%	69.4%
Cancelled	1.3%	1.3%	1.3%	2.6%
Average departure delay (late minutes only)	21.0 min	17.9 min	16.6 min	24.1 min
Scheduled departures a day	312	293	275	21,066
Scheduled departures	9,345	8,776	100,196	631,970

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	3,733	40%	60.6%	16.0 min	0.6%
AS Alaska Airlines	1,298	14%	73.2%	7.0 min	1.6%
OO SkyWest Airlines	1,282	14%	67.3%	10.9 min	2.6%
UA United Airlines	975	10%	68.3%	14.5 min	1.0%
AA American Airlines	887	9%	71.7%	19.2 min	1.0%
DL Delta Air Lines	836	9%	79.9%	6.4 min	1.0%
F9 Frontier Airlines	185	2%	57.3%	24.1 min	2.2%
B6 JetBlue Airways	149	2%	57.0%	16.3 min	8.1%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SAN–SFO	San Diego to San Francisco	659	38.1%	33.5 min	1.4%
SAN–DEN	San Diego to Denver	544	69.7%	11.0 min	0.9%
SAN–PHX	San Diego to Phoenix	529	60.9%	23.6 min	1.1%
SAN–SJC	San Diego to San Jose	476	65.5%	12.6 min	0.4%
SAN–SMF	San Diego to Sacramento	462	66.2%	10.8 min	0.9%
SAN–SEA	San Diego to Seattle	457	76.4%	4.9 min	0.9%
SAN–ORD	San Diego to Chicago	398	70.1%	13.1 min	1.3%
SAN–DFW	San Diego to Dallas/Fort Worth	397	69.0%	15.5 min	0.5%
SAN–LAS	San Diego to Las Vegas	390	63.1%	14.3 min	1.8%
SAN–OAK	San Diego to Oakland	296	73.3%	7.6 min	0.0%
SAN–SLC	San Diego to Salt Lake City	271	80.1%	4.6 min	0.0%
SAN–AUS	San Diego to Austin	230	56.5%	20.9 min	0.9%

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), July 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2026	Minutes
Air carrier	26.9%	31.7%	45,476
Late-arriving aircraft	47.0%	41.8%	79,647
National Aviation System	24.1%	19.9%	40,743
Extreme weather	1.9%	6.5%	3,247
Security	0.1%	0.1%	244

169,357 delay minutes on 2,927 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 July 2026?

65.3% of 9,345 scheduled domestic departures left less than 15 minutes late, and 66.7% reached their destination on time. The national figures that month were 68.8% and 69.4%.

How does that compare with a year earlier?

In July 2025, 72.8% of 8,776 departures left on time and 1.3% were cancelled, against 65.3% and 1.3% in July 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 2026; 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.