San Diego International in June 2025

73.7%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 June 2025, reporting carriers scheduled 8,558 domestic departures from San Diego International (SAN). 73.7% left less than 15 minutes late and 72.5% reached their destination on time; 0.8% were cancelled.

Nationally that month, 71.4% of flights departed on time and 70.3% arrived on time, so SAN departures were 2.3 points above the national departure figure.

A year earlier, in June 2024, the airport had 8,291 departures with 72.7% leaving on time: a change of +1.0 points, with flights up 3%.

Flights arriving at SAN that month were on time 71.8% of the time (8,558 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 49%, national aviation system 24% and air carrier 24%.

On time 72.5%
Arrived 15+ minutes late 26.3%
Cancelled 0.8%
Diverted 0.4%

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

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

Measure	Jun 2025	Jun 2024	SAN, 12 months to Jul 2026	All reported flights, Jun 2025
Departed on time	73.7%	72.7%	73.5%	71.4%
Arrived on time	72.5%	71.6%	76.1%	70.3%
Cancelled	0.8%	0.7%	1.3%	1.6%
Average departure delay (late minutes only)	16.7 min	18.2 min	16.6 min	22.1 min
Scheduled departures a day	285	276	275	20,386
Scheduled departures	8,558	8,291	100,196	611,575

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	3,060	36%	71.4%	9.2 min	0.7%
OO SkyWest Airlines	1,339	16%	73.6%	8.4 min	0.5%
AS Alaska Airlines	942	11%	70.5%	10.2 min	0.8%
UA United Airlines	888	10%	78.2%	6.3 min	0.2%
AA American Airlines	862	10%	72.9%	15.2 min	1.9%
DL Delta Air Lines	829	10%	80.6%	4.6 min	0.5%
F9 Frontier Airlines	246	3%	46.3%	61.1 min	4.1%
B6 JetBlue Airways	142	2%	76.1%	1.2 min	0.0%
NK Spirit Airlines	139	2%	77.0%	13.3 min	0.7%
HA Hawaiian Airlines	75	1%	44.0%	23.8 min	0.0%
G4 Allegiant Air	36	0%	44.4%	44.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SAN–LAS	San Diego to Las Vegas	645	69.5%	15.7 min	1.1%
SAN–SFO	San Diego to San Francisco	578	68.0%	12.3 min	0.3%
SAN–SJC	San Diego to San Jose	475	74.3%	8.0 min	0.4%
SAN–DEN	San Diego to Denver	458	62.4%	23.5 min	0.9%
SAN–PHX	San Diego to Phoenix	456	72.1%	15.5 min	1.8%
SAN–SMF	San Diego to Sacramento	449	71.7%	11.5 min	1.1%
SAN–SEA	San Diego to Seattle	427	71.2%	8.7 min	1.4%
SAN–DFW	San Diego to Dallas/Fort Worth	326	65.0%	18.5 min	4.0%
SAN–ORD	San Diego to Chicago	315	75.2%	17.7 min	0.3%
SAN–OAK	San Diego to Oakland	286	68.2%	8.1 min	1.7%
SAN–ATL	San Diego to Atlanta	226	68.6%	14.2 min	0.9%
SAN–SLC	San Diego to Salt Lake City	215	80.5%	5.7 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), June 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2025	Minutes
Air carrier	23.9%	31.6%	32,244
Late-arriving aircraft	48.8%	40.6%	65,985
National Aviation System	24.2%	20.9%	32,692
Extreme weather	3.0%	6.9%	4,008
Security	0.2%	0.2%	246

135,175 delay minutes on 2,250 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 June 2025?

73.7% of 8,558 scheduled domestic departures left less than 15 minutes late, and 72.5% reached their destination on time. The national figures that month were 71.4% and 70.3%.

How does that compare with a year earlier?

In June 2024, 72.7% of 8,291 departures left on time and 0.7% were cancelled, against 73.7% and 0.8% in June 2025.

Provenance

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