San Antonio International in September 2024

86.4%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 September 2024, reporting carriers scheduled 3,444 domestic departures from San Antonio International (SAT). 86.4% left less than 15 minutes late and 86.6% reached their destination on time; 0.1% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so SAT departures were 2.0 points above the national departure figure.

A year earlier, in September 2023, the airport had 3,322 departures with 85.6% leaving on time: a change of +0.8 points, with flights up 4%.

Flights arriving at SAT that month were on time 82.6% of the time (3,445 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 42% and national aviation system 13%.

On time 86.6%
Arrived 15+ minutes late 13.1%
Cancelled 0.1%
Diverted 0.1%

Every scheduled departure from SAT in September 2024, judged by arrival at the destination.

September 2024 against a year earlier, the airport's year and the nation

Measure	Sep 2024	Sep 2023	SAT, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	86.4%	85.6%	80.3%	84.4%
Arrived on time	86.6%	83.2%	80.6%	83.9%
Cancelled	0.1%	0.5%	1.2%	0.6%
Average departure delay (late minutes only)	11.0 min	10.4 min	14.7 min	10.6 min
Scheduled departures a day	115	111	110	19,421
Scheduled departures	3,444	3,322	40,226	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,294	38%	87.7%	-2.0 min	0.1%
AA American Airlines	659	19%	79.7%	8.2 min	0.3%
UA United Airlines	536	16%	92.7%	-4.5 min	0.0%
DL Delta Air Lines	519	15%	91.5%	-4.2 min	0.0%
NK Spirit Airlines	195	6%	80.0%	5.4 min	0.5%
F9 Frontier Airlines	77	2%	75.3%	16.2 min	1.3%
OO SkyWest Airlines	65	2%	93.8%	11.2 min	0.0%
AS Alaska Airlines	48	1%	81.3%	0.6 min	0.0%
B6 JetBlue Airways	42	1%	69.0%	7.8 min	0.0%
MQ Envoy Air	9	0%	88.9%	-8.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SAT–DFW	San Antonio to Dallas/Fort Worth	399	76.2%	6.6 min	0.0%
SAT–DEN	San Antonio to Denver	257	91.4%	-8.6 min	0.4%
SAT–ATL	San Antonio to Atlanta	247	90.3%	-4.1 min	0.0%
SAT–IAH	San Antonio to Houston	231	90.9%	2.2 min	0.0%
SAT–DAL	San Antonio to Dallas	204	85.3%	-2.2 min	0.0%
SAT–PHX	San Antonio to Phoenix	200	82.0%	5.4 min	0.5%
SAT–LAS	San Antonio to Las Vegas	197	80.7%	5.6 min	0.0%
SAT–LAX	San Antonio to Los Angeles	165	92.7%	-4.3 min	0.0%
SAT–ORD	San Antonio to Chicago	136	93.4%	9.6 min	0.0%
SAT–HOU	San Antonio to Houston	121	85.1%	0.3 min	0.0%
SAT–CLT	San Antonio to Charlotte	119	84.0%	11.7 min	0.8%
SAT–MCO	San Antonio to Orlando	85	85.9%	7.3 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), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	41.5%	38.6%	13,693
Late-arriving aircraft	43.7%	38.4%	14,414
National Aviation System	13.3%	18.2%	4,385
Extreme weather	1.4%	4.8%	454
Security	0.0%	0.1%	13

32,959 delay minutes on 452 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 SAT on time in September 2024?

86.4% of 3,444 scheduled domestic departures left less than 15 minutes late, and 86.6% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 85.6% of 3,322 departures left on time and 0.5% were cancelled, against 86.4% and 0.1% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for SAT · methodology · corrections.