Airports › San Antonio (SAT) › August 2025
Airport month · August 2025
San Antonio International in August 2025
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 August 2025, reporting carriers scheduled 3,444 domestic departures from San Antonio International (SAT). 81.5% left less than 15 minutes late and 80.2% reached their destination on time; 1.2% were cancelled.
Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so SAT departures were 4.7 points above the national departure figure.
A year earlier, in August 2024, the airport had 3,640 departures with 82.0% leaving on time: a change of −0.5 points, with flights down 5%.
Flights arriving at SAT that month were on time 74.7% of the time (3,443 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 31% and national aviation system 21%.
- On time 80.2%
- Arrived 15+ minutes late 18.1%
- Cancelled 1.2%
- Diverted 0.5%
August 2025 against a year earlier, the airport's year and the nation
| Measure | Aug 2025 | Aug 2024 | SAT, 12 months to Jul 2026 | All reported flights, Aug 2025 |
|---|---|---|---|---|
| Departed on time | 81.5% | 82.0% | 80.3% | 76.8% |
| Arrived on time | 80.2% | 82.4% | 80.6% | 76.3% |
| Cancelled | 1.2% | 1.2% | 1.2% | 1.1% |
| Average departure delay (late minutes only) | 15.1 min | 13.5 min | 14.7 min | 17.6 min |
| Scheduled departures a day | 115 | 121 | 110 | 20,079 |
| Scheduled departures | 3,444 | 3,640 | 40,226 | 602,378 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| WN Southwest Airlines | 1,294 | 38% | 83.4% | 1.1 min | 0.3% |
| AA American Airlines | 651 | 19% | 71.3% | 19.9 min | 3.4% |
| DL Delta Air Lines | 603 | 18% | 86.4% | -3.7 min | 0.5% |
| UA United Airlines | 490 | 14% | 80.4% | 7.1 min | 1.6% |
| NK Spirit Airlines | 120 | 3% | 75.8% | 12.3 min | 0.0% |
| OO SkyWest Airlines | 110 | 3% | 82.7% | 9.9 min | 0.0% |
| MQ Envoy Air | 68 | 2% | 66.2% | 33.2 min | 2.9% |
| AS Alaska Airlines | 57 | 2% | 70.2% | 6.7 min | 1.8% |
| F9 Frontier Airlines | 51 | 1% | 70.6% | 12.4 min | 2.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SAT–DFW | San Antonio to Dallas/Fort Worth | 383 | 63.7% | 32.3 min | 4.2% |
| SAT–ATL | San Antonio to Atlanta | 269 | 84.4% | -3.0 min | 0.7% |
| SAT–DEN | San Antonio to Denver | 240 | 74.2% | 10.6 min | 1.7% |
| SAT–DAL | San Antonio to Dallas | 218 | 84.9% | 0.4 min | 0.5% |
| SAT–IAH | San Antonio to Houston | 208 | 77.9% | 7.8 min | 1.4% |
| SAT–LAX | San Antonio to Los Angeles | 182 | 90.7% | -7.5 min | 0.0% |
| SAT–PHX | San Antonio to Phoenix | 174 | 81.0% | 7.7 min | 0.6% |
| SAT–LAS | San Antonio to Las Vegas | 161 | 87.0% | 1.5 min | 0.0% |
| SAT–ORD | San Antonio to Chicago | 154 | 70.1% | 14.2 min | 3.2% |
| SAT–HOU | San Antonio to Houston | 144 | 77.8% | 5.3 min | 0.0% |
| SAT–CLT | San Antonio to Charlotte | 115 | 84.3% | 6.6 min | 0.9% |
| SAT–DTW | San Antonio to Detroit | 97 | 93.8% | -4.7 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left SAT on time in August 2025?
81.5% of 3,444 scheduled domestic departures left less than 15 minutes late, and 80.2% reached their destination on time. The national figures that month were 76.8% and 76.3%.
How does that compare with a year earlier?
In August 2024, 82.0% of 3,640 departures left on time and 1.2% were cancelled, against 81.5% and 1.2% in August 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2025; 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.