San Antonio International in September 2023

85.6%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 2023, reporting carriers scheduled 3,322 domestic departures from San Antonio International (SAT). 85.6% left less than 15 minutes late and 83.2% reached their destination on time; 0.5% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so SAT departures were 5.1 points above the national departure figure.

Flights arriving at SAT that month were on time 80.4% of the time (3,321 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 43%, air carrier 31% and national aviation system 23%.

On time 83.2%
Arrived 15+ minutes late 15.9%
Cancelled 0.5%
Diverted 0.3%

Every scheduled departure from SAT in September 2023, judged by arrival at the destination.

September 2023 against a year earlier, the airport's year and the nation

Measure	Sep 2023	Year earlier	SAT, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	85.6%	—	80.3%	80.5%
Arrived on time	83.2%	—	80.6%	80.1%
Cancelled	0.5%	—	1.2%	1.2%
Average departure delay (late minutes only)	10.4 min	—	14.7 min	14.1 min
Scheduled departures a day	111	—	110	18,978
Scheduled departures	3,322	—	40,226	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,319	40%	83.5%	1.6 min	0.4%
AA American Airlines	618	19%	83.5%	4.4 min	0.0%
UA United Airlines	526	16%	84.4%	-0.5 min	0.8%
DL Delta Air Lines	520	16%	87.1%	2.0 min	0.2%
NK Spirit Airlines	103	3%	88.3%	0.3 min	0.0%
F9 Frontier Airlines	86	3%	73.3%	19.0 min	5.8%
B6 JetBlue Airways	60	2%	48.3%	50.1 min	5.0%
OO SkyWest Airlines	49	1%	85.7%	-0.9 min	0.0%
AS Alaska Airlines	33	1%	54.5%	8.5 min	0.0%
MQ Envoy Air	8	0%	100.0%	-16.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SAT–DFW	San Antonio to Dallas/Fort Worth	308	79.5%	6.2 min	0.0%
SAT–DEN	San Antonio to Denver	264	85.6%	3.6 min	0.0%
SAT–ATL	San Antonio to Atlanta	250	92.0%	-6.8 min	0.4%
SAT–DAL	San Antonio to Dallas	236	84.7%	-1.1 min	0.4%
SAT–IAH	San Antonio to Houston	205	80.0%	0.4 min	0.5%
SAT–PHX	San Antonio to Phoenix	199	81.9%	7.9 min	0.5%
SAT–LAS	San Antonio to Las Vegas	173	79.2%	9.3 min	1.7%
SAT–LAX	San Antonio to Los Angeles	167	82.0%	7.4 min	0.0%
SAT–HOU	San Antonio to Houston	141	90.1%	-6.1 min	0.7%
SAT–ORD	San Antonio to Chicago	123	85.4%	-5.1 min	0.0%
SAT–CLT	San Antonio to Charlotte	117	90.6%	-0.6 min	0.0%
SAT–BWI	San Antonio to Baltimore	94	81.9%	5.2 min	2.1%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	30.7%	36.4%	10,294
Late-arriving aircraft	43.0%	38.3%	14,399
National Aviation System	22.5%	19.9%	7,537
Extreme weather	3.8%	5.1%	1,271
Security	0.0%	0.2%	11

33,512 delay minutes on 529 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 2023?

85.6% of 3,322 scheduled domestic departures left less than 15 minutes late, and 83.2% reached their destination on time. The national figures that month were 80.5% and 80.1%.

How does that compare with a year earlier?

September 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2023; 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.