FlightRecord

San Antonio International Airport (SAT): Delays & On-Time Performance

Data through May 2026

San Antonio International Airport (SAT) is a tale of two seasons: departures ran 88% on-time in October 2024 but sank to 71% in July 2024. Across the year it averages 82% against a national 78%, over roughly 112 departures a day to 40 destinations.

Departures on-time
82%
left <15 min late
Avg dep delay
15 min
Arrivals on-time
78%
Cancelled
1.2%
Destinations
40
nonstop
Airlines
13

Monthly on-time trend

Monthly departure on-time percentage at SAT50%75%100%June 2024: 76% on-time (3,555 flights)76Jun 2024July 2024: 71% on-time (3,757 flights)71August 2024: 83% on-time (3,640 flights)83September 2024: 87% on-time (3,444 flights)87Sep 2024October 2024: 88% on-time (3,721 flights)88November 2024: 87% on-time (3,376 flights)87December 2024: 82% on-time (3,451 flights)82Dec 2024January 2025: 84% on-time (3,100 flights)84February 2025: 86% on-time (2,921 flights)86March 2025: 84% on-time (3,664 flights)84Mar 2025April 2025: 82% on-time (3,536 flights)82May 2025: 79% on-time (3,758 flights)79June 2025: 76% on-time (3,670 flights)76Jun 2025July 2025: 78% on-time (3,699 flights)78August 2025: 83% on-time (3,444 flights)83September 2025: 86% on-time (3,334 flights)86Sep 2025October 2025: 85% on-time (3,656 flights)85November 2025: 84% on-time (3,440 flights)84December 2025: 81% on-time (3,588 flights)81Dec 2025January 2026: 84% on-time (2,921 flights)84February 2026: 86% on-time (2,671 flights)86March 2026: 81% on-time (3,439 flights)81Mar 2026April 2026: 83% on-time (3,384 flights)83May 2026: 77% on-time (3,485 flights)77

Best time of day to depart from SAT

On-time percentage by scheduled departure hour at SAT5 a.m.: 94% on-time (6,978 flights)56 a.m.: 93% on-time (9,036 flights)67 a.m.: 92% on-time (7,728 flights)78 a.m.: 90% on-time (4,061 flights)89 a.m.: 89% on-time (3,382 flights)910 a.m.: 86% on-time (3,604 flights)1011 a.m.: 85% on-time (4,367 flights)1112 p.m.: 81% on-time (6,185 flights)121 p.m.: 79% on-time (4,868 flights)132 p.m.: 78% on-time (5,919 flights)143 p.m.: 76% on-time (3,520 flights)154 p.m.: 74% on-time (6,229 flights)165 p.m.: 72% on-time (4,880 flights)176 p.m.: 71% on-time (5,402 flights)187 p.m.: 67% on-time (3,305 flights)198 p.m.: 63% on-time (2,232 flights)209 p.m.: 67% on-time (692 flights)2110 p.m.: 67% on-time (259 flights)22scheduled departure hour

Busiest routes from SAT

RouteFlights/12moOn-timeAvg delay
SAT → DFW4,40176%23 min
SAT → ATL3,07884%12 min
SAT → DEN3,01382%14 min
SAT → DAL2,71784%10 min
SAT → PHX2,50284%13 min
SAT → IAH2,45183%14 min
SAT → LAS2,07983%12 min
SAT → ORD1,96381%16 min

Most reliable routes

  1. SAT → DCA91%
  2. SAT → IAD90%
  3. SAT → OKC88%
  4. SAT → DTW88%
  5. SAT → STL87%

Most delay-prone routes

  1. SAT → BOS62%
  2. SAT → SEA74%
  3. SAT → PHL74%
  4. SAT → DFW76%
  5. SAT → HOU77%

Airline performance at SAT

AirlineOn-time departuresAvg delayFlights
United Airlines87%13 min11,362
SkyWest Airlines87%15 min2,956
Delta Air Lines84%14 min13,234
Republic Airways81%12 min112
American Airlines81%21 min15,354
Southwest Airlines81%11 min31,846
Spirit Airlines78%19 min3,280
Envoy Air77%19 min1,436
Frontier Airlines76%23 min1,619
Alaska Airlines75%14 min1,151
JetBlue Airways65%29 min278

Frequently asked questions

How often are flights delayed at SAT?
18% of departures from San Antonio International Airport left 15+ minutes late between 2024-06 and 2026-05, with an average departure delay of 15 minutes. The national on-time average over the same period was 78%.
What is the best time of day to depart from SAT?
Flights scheduled around 5 a.m. depart on time 94% of the time at SAT, versus 63% around 8 p.m.. Booking before noon is the usual rule of thumb here.
What is the worst month for delays at SAT?
In this dataset, July 2024 was the weakest month at SAT, with 71% of departures on time.
How often are flights cancelled at SAT?
1.2% of scheduled departures from SAT were cancelled in this period, compared with a national rate of 1.6%.

Popular route pages from this airport

Based on 82,654 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.