San Antonio International in January 2026

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 January 2026, reporting carriers scheduled 2,921 domestic departures from San Antonio International (SAT). 80.9% left less than 15 minutes late and 81.5% reached their destination on time; 3.7% were cancelled.

Nationally that month, 75.6% of flights departed on time and 75.3% arrived on time, so SAT departures were 5.3 points above the national departure figure.

A year earlier, in January 2025, the airport had 3,100 departures with 80.9% leaving on time: a change of 0.0 points, with flights down 6%.

Flights arriving at SAT that month were on time 75.9% of the time (2,916 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 36%, air carrier 28% and extreme weather 23%.

On time 81.5%
Arrived 15+ minutes late 14.6%
Cancelled 3.7%
Diverted 0.2%

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

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

Measure	Jan 2026	Jan 2025	SAT, 12 months to Jul 2026	All reported flights, Jan 2026
Departed on time	80.9%	80.9%	80.3%	75.6%
Arrived on time	81.5%	83.1%	80.6%	75.3%
Cancelled	3.7%	3.6%	1.2%	4.7%
Average departure delay (late minutes only)	15.5 min	11.7 min	14.7 min	16.7 min
Scheduled departures a day	97	103	110	18,133
Scheduled departures	2,921	3,100	40,226	544,003

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	992	34%	84.3%	0.2 min	1.9%
AA American Airlines	621	21%	74.1%	18.8 min	8.9%
DL Delta Air Lines	517	18%	82.4%	2.9 min	2.7%
UA United Airlines	424	15%	86.8%	0.3 min	1.9%
OO SkyWest Airlines	98	3%	85.7%	5.3 min	3.1%
F9 Frontier Airlines	76	3%	80.3%	3.1 min	0.0%
MQ Envoy Air	72	2%	70.8%	8.0 min	5.6%
NK Spirit Airlines	71	2%	80.3%	-5.4 min	5.6%
AS Alaska Airlines	38	1%	71.1%	9.2 min	2.6%
YX Republic Airline	10	0%	90.0%	-12.8 min	0.0%
OH PSA Airlines	2	0%	100.0%	-12.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SAT–DFW	San Antonio to Dallas/Fort Worth	354	73.2%	20.1 min	9.3%
SAT–DEN	San Antonio to Denver	228	87.3%	4.0 min	0.9%
SAT–ATL	San Antonio to Atlanta	216	81.0%	5.7 min	3.7%
SAT–PHX	San Antonio to Phoenix	215	83.7%	2.3 min	2.8%
SAT–DAL	San Antonio to Dallas	205	84.9%	-1.5 min	4.9%
SAT–IAH	San Antonio to Houston	180	91.1%	-2.4 min	0.6%
SAT–ORD	San Antonio to Chicago	145	74.5%	7.7 min	3.4%
SAT–LAS	San Antonio to Las Vegas	137	82.5%	1.5 min	0.0%
SAT–LAX	San Antonio to Los Angeles	129	79.8%	7.8 min	0.0%
SAT–CLT	San Antonio to Charlotte	118	75.4%	15.0 min	12.7%
SAT–HOU	San Antonio to Houston	98	85.7%	-4.5 min	1.0%
SAT–SLC	San Antonio to Salt Lake City	87	89.7%	-7.7 min	1.1%

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), January 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2026	Minutes
Air carrier	27.5%	37.3%	11,241
Late-arriving aircraft	36.4%	35.0%	14,885
National Aviation System	13.3%	18.0%	5,445
Extreme weather	22.5%	9.6%	9,201
Security	0.3%	0.1%	118

40,890 delay minutes on 427 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 January 2026?

80.9% of 2,921 scheduled domestic departures left less than 15 minutes late, and 81.5% reached their destination on time. The national figures that month were 75.6% and 75.3%.

How does that compare with a year earlier?

In January 2025, 80.9% of 3,100 departures left on time and 3.6% were cancelled, against 80.9% and 3.7% in January 2026.

Provenance

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