San Antonio International in March 2026

79.5%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 2026, reporting carriers scheduled 3,439 domestic departures from San Antonio International (SAT). 79.5% left less than 15 minutes late and 78.5% reached their destination on time; 1.4% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so SAT departures were 6.7 points above the national departure figure.

A year earlier, in March 2025, the airport had 3,664 departures with 83.7% leaving on time: a change of −4.2 points, with flights down 6%.

Flights arriving at SAT that month were on time 76.3% of the time (3,441 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 29% and national aviation system 25%.

On time 78.5%
Arrived 15+ minutes late 19.7%
Cancelled 1.4%
Diverted 0.4%

Every scheduled departure from SAT in March 2026, judged by arrival at the destination.

March 2026 against a year earlier, the airport's year and the nation

Measure	Mar 2026	Mar 2025	SAT, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	79.5%	83.7%	80.3%	72.8%
Arrived on time	78.5%	83.6%	80.6%	73.2%
Cancelled	1.4%	0.8%	1.2%	2.9%
Average departure delay (late minutes only)	15.2 min	13.1 min	14.7 min	20.3 min
Scheduled departures a day	115	122	110	20,403
Scheduled departures	3,439	3,664	40,226	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,322	38%	76.2%	4.4 min	0.6%
AA American Airlines	601	17%	80.7%	9.6 min	1.7%
DL Delta Air Lines	552	16%	85.7%	1.8 min	2.0%
UA United Airlines	501	15%	78.4%	11.3 min	1.2%
OO SkyWest Airlines	171	5%	84.8%	-7.6 min	1.8%
F9 Frontier Airlines	110	3%	74.5%	27.4 min	0.9%
MQ Envoy Air	65	2%	72.3%	10.0 min	3.1%
NK Spirit Airlines	62	2%	62.9%	15.5 min	6.5%
AS Alaska Airlines	31	1%	54.8%	15.6 min	0.0%
YX Republic Airline	24	1%	45.8%	18.8 min	8.3%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SAT–DFW	San Antonio to Dallas/Fort Worth	364	79.4%	8.3 min	1.9%
SAT–DEN	San Antonio to Denver	295	79.3%	11.6 min	0.3%
SAT–ATL	San Antonio to Atlanta	256	81.6%	8.5 min	1.2%
SAT–DAL	San Antonio to Dallas	251	82.5%	2.8 min	0.0%
SAT–PHX	San Antonio to Phoenix	236	87.3%	0.7 min	0.4%
SAT–IAH	San Antonio to Houston	233	78.1%	14.9 min	2.6%
SAT–ORD	San Antonio to Chicago	179	62.6%	15.9 min	3.9%
SAT–LAS	San Antonio to Las Vegas	165	84.8%	-6.9 min	0.6%
SAT–LAX	San Antonio to Los Angeles	144	93.1%	-18.5 min	0.0%
SAT–MCO	San Antonio to Orlando	118	66.9%	21.7 min	3.4%
SAT–CLT	San Antonio to Charlotte	115	80.9%	8.2 min	1.7%
SAT–HOU	San Antonio to Houston	100	56.0%	20.3 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), March 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	29.4%	33.5%	14,618
Late-arriving aircraft	41.6%	39.3%	20,664
National Aviation System	25.3%	21.0%	12,573
Extreme weather	3.6%	5.9%	1,795
Security	0.1%	0.2%	45

49,695 delay minutes on 678 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 March 2026?

79.5% of 3,439 scheduled domestic departures left less than 15 minutes late, and 78.5% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 83.7% of 3,664 departures left on time and 0.8% were cancelled, against 79.5% and 1.4% in March 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 2026; 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.