San Diego International in July 2025

72.8%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 2025, reporting carriers scheduled 8,776 domestic departures from San Diego International (SAN). 72.8% left less than 15 minutes late and 72.5% reached their destination on time; 1.3% were cancelled.

Nationally that month, 69.7% of flights departed on time and 69.0% arrived on time, so SAN departures were 3.1 points above the national departure figure.

A year earlier, in July 2024, the airport had 8,721 departures with 70.4% leaving on time: a change of +2.4 points, with flights up 1%.

Flights arriving at SAN that month were on time 71.4% of the time (8,775 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 45%, air carrier 31% and national aviation system 22%.

On time 72.5%
Arrived 15+ minutes late 25.7%
Cancelled 1.3%
Diverted 0.5%

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

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

Measure	Jul 2025	Jul 2024	SAN, 12 months to Jul 2026	All reported flights, Jul 2025
Departed on time	72.8%	70.4%	73.5%	69.7%
Arrived on time	72.5%	68.1%	76.1%	69.0%
Cancelled	1.3%	1.9%	1.3%	2.5%
Average departure delay (late minutes only)	17.9 min	20.6 min	16.6 min	24.3 min
Scheduled departures a day	293	291	275	21,048
Scheduled departures	8,776	8,721	100,196	631,428

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	3,127	36%	70.9%	11.1 min	0.7%
OO SkyWest Airlines	1,353	15%	75.8%	8.3 min	0.8%
AS Alaska Airlines	975	11%	68.9%	10.2 min	3.2%
UA United Airlines	912	10%	73.4%	8.0 min	1.4%
AA American Airlines	886	10%	75.6%	15.1 min	1.8%
DL Delta Air Lines	849	10%	80.2%	2.0 min	0.9%
F9 Frontier Airlines	266	3%	60.2%	19.3 min	3.0%
B6 JetBlue Airways	151	2%	72.8%	6.6 min	2.6%
NK Spirit Airlines	139	2%	78.4%	6.0 min	1.4%
HA Hawaiian Airlines	84	1%	42.9%	48.1 min	1.2%
G4 Allegiant Air	34	0%	47.1%	30.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SAN–LAS	San Diego to Las Vegas	646	72.9%	12.2 min	1.4%
SAN–SFO	San Diego to San Francisco	582	63.2%	18.5 min	1.0%
SAN–PHX	San Diego to Phoenix	473	75.5%	6.3 min	1.3%
SAN–SJC	San Diego to San Jose	471	77.5%	7.3 min	0.6%
SAN–SMF	San Diego to Sacramento	465	71.6%	10.5 min	0.4%
SAN–DEN	San Diego to Denver	458	67.0%	14.6 min	0.4%
SAN–SEA	San Diego to Seattle	446	73.3%	7.2 min	2.5%
SAN–ORD	San Diego to Chicago	336	69.6%	14.6 min	1.5%
SAN–DFW	San Diego to Dallas/Fort Worth	335	70.1%	15.2 min	3.0%
SAN–OAK	San Diego to Oakland	288	74.3%	7.0 min	1.4%
SAN–ATL	San Diego to Atlanta	230	76.5%	4.2 min	0.9%
SAN–SLC	San Diego to Salt Lake City	221	78.7%	7.2 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), July 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2025	Minutes
Air carrier	31.1%	31.1%	43,245
Late-arriving aircraft	45.2%	40.8%	62,852
National Aviation System	22.0%	20.7%	30,641
Extreme weather	1.5%	7.3%	2,123
Security	0.2%	0.1%	301

139,162 delay minutes on 2,252 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 2025?

72.8% of 8,776 scheduled domestic departures left less than 15 minutes late, and 72.5% reached their destination on time. The national figures that month were 69.7% and 69.0%.

How does that compare with a year earlier?

In July 2024, 70.4% of 8,721 departures left on time and 1.9% were cancelled, against 72.8% and 1.3% in July 2025.

Provenance

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