San Diego International in March 2025

80.9%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 March 2025, reporting carriers scheduled 7,939 domestic departures from San Diego International (SAN). 80.9% left less than 15 minutes late and 77.9% reached their destination on time; 0.8% were cancelled.

Nationally that month, 79.9% of flights departed on time and 79.3% arrived on time, so SAN departures were 1.0 points above the national departure figure.

A year earlier, in March 2024, the airport had 7,577 departures with 78.2% leaving on time: a change of +2.7 points, with flights up 5%.

Flights arriving at SAN that month were on time 78.0% of the time (7,938 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 45%, national aviation system 27% and air carrier 23%.

On time 77.9%
Arrived 15+ minutes late 21.0%
Cancelled 0.8%
Diverted 0.3%

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

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

Measure	Mar 2025	Mar 2024	SAN, 12 months to Jul 2026	All reported flights, Mar 2025
Departed on time	80.9%	78.2%	73.5%	79.9%
Arrived on time	77.9%	77.9%	76.1%	79.3%
Cancelled	0.8%	0.6%	1.3%	1.2%
Average departure delay (late minutes only)	12.5 min	14.7 min	16.6 min	14.9 min
Scheduled departures a day	265	253	275	20,029
Scheduled departures	7,939	7,577	100,196	600,872

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	2,982	38%	78.6%	5.3 min	0.7%
OO SkyWest Airlines	1,173	15%	69.3%	12.0 min	1.1%
UA United Airlines	870	11%	83.7%	1.0 min	0.1%
AS Alaska Airlines	825	10%	75.0%	3.4 min	1.1%
AA American Airlines	816	10%	79.3%	11.2 min	1.6%
DL Delta Air Lines	774	10%	81.5%	3.4 min	0.1%
F9 Frontier Airlines	181	2%	75.1%	13.2 min	2.8%
B6 JetBlue Airways	124	2%	79.0%	3.0 min	0.8%
NK Spirit Airlines	123	2%	91.1%	-4.8 min	0.0%
HA Hawaiian Airlines	62	1%	72.6%	5.8 min	0.0%
G4 Allegiant Air	9	0%	88.9%	3.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SAN–LAS	San Diego to Las Vegas	630	73.7%	8.8 min	0.8%
SAN–SFO	San Diego to San Francisco	541	67.8%	13.0 min	0.9%
SAN–PHX	San Diego to Phoenix	468	78.2%	10.3 min	1.3%
SAN–SJC	San Diego to San Jose	454	82.2%	3.3 min	1.1%
SAN–DEN	San Diego to Denver	450	83.8%	0.9 min	0.4%
SAN–SMF	San Diego to Sacramento	427	73.1%	7.7 min	0.7%
SAN–SEA	San Diego to Seattle	354	78.8%	2.4 min	1.1%
SAN–DFW	San Diego to Dallas/Fort Worth	303	77.2%	10.0 min	3.0%
SAN–OAK	San Diego to Oakland	282	79.4%	2.4 min	0.7%
SAN–SLC	San Diego to Salt Lake City	236	84.7%	-1.1 min	0.0%
SAN–ORD	San Diego to Chicago	228	81.1%	5.3 min	0.0%
SAN–ATL	San Diego to Atlanta	196	81.1%	4.2 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), March 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2025	Minutes
Air carrier	23.0%	33.0%	22,663
Late-arriving aircraft	45.3%	39.2%	44,538
National Aviation System	26.7%	21.9%	26,218
Extreme weather	5.0%	5.9%	4,911
Security	0.0%	0.1%	40

98,370 delay minutes on 1,670 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 March 2025?

80.9% of 7,939 scheduled domestic departures left less than 15 minutes late, and 77.9% reached their destination on time. The national figures that month were 79.9% and 79.3%.

How does that compare with a year earlier?

In March 2024, 78.2% of 7,577 departures left on time and 0.6% were cancelled, against 80.9% and 0.8% in March 2025.

Provenance

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