Airports › San Antonio (SAT) › May 2026
Airport month · May 2026
San Antonio International in May 2026
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 May 2026, reporting carriers scheduled 3,485 domestic departures from San Antonio International (SAT). 76.3% left less than 15 minutes late and 79.3% reached their destination on time; 1.4% were cancelled.
Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so SAT departures were 0.8 points below the national departure figure.
A year earlier, in May 2025, the airport had 3,758 departures with 77.7% leaving on time: a change of −1.4 points, with flights down 7%.
Flights arriving at SAT that month were on time 72.1% of the time (3,488 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 35%, air carrier 32% and extreme weather 17%.
- On time 79.3%
- Arrived 15+ minutes late 19.0%
- Cancelled 1.4%
- Diverted 0.3%
May 2026 against a year earlier, the airport's year and the nation
| Measure | May 2026 | May 2025 | SAT, 12 months to Jul 2026 | All reported flights, May 2026 |
|---|---|---|---|---|
| Departed on time | 76.3% | 77.7% | 80.3% | 77.1% |
| Arrived on time | 79.3% | 77.9% | 80.6% | 77.6% |
| Cancelled | 1.4% | 1.2% | 1.2% | 0.9% |
| Average departure delay (late minutes only) | 17.8 min | 18.2 min | 14.7 min | 16.0 min |
| Scheduled departures a day | 116 | 125 | 110 | 20,391 |
| Scheduled departures | 3,485 | 3,758 | 40,226 | 611,735 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| WN Southwest Airlines | 1,357 | 39% | 75.4% | 6.6 min | 0.4% |
| AA American Airlines | 628 | 18% | 80.3% | 15.4 min | 2.7% |
| DL Delta Air Lines | 611 | 18% | 83.8% | -1.3 min | 2.8% |
| UA United Airlines | 461 | 13% | 83.9% | -1.3 min | 0.4% |
| MQ Envoy Air | 166 | 5% | 76.5% | 9.5 min | 2.4% |
| OO SkyWest Airlines | 148 | 4% | 82.4% | 36.2 min | 1.4% |
| F9 Frontier Airlines | 61 | 2% | 70.5% | 11.6 min | 0.0% |
| AS Alaska Airlines | 50 | 1% | 92.0% | -9.1 min | 0.0% |
| NK Spirit Airlines | 2 | 0% | 0.0% | 54.5 min | 0.0% |
| YX Republic Airline | 1 | 0% | 100.0% | -6.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SAT–DFW | San Antonio to Dallas/Fort Worth | 390 | 73.8% | 28.2 min | 5.4% |
| SAT–DEN | San Antonio to Denver | 266 | 78.2% | 1.9 min | 0.0% |
| SAT–ATL | San Antonio to Atlanta | 259 | 75.7% | 6.4 min | 4.6% |
| SAT–DAL | San Antonio to Dallas | 252 | 80.2% | 2.7 min | 2.0% |
| SAT–PHX | San Antonio to Phoenix | 230 | 82.2% | 4.2 min | 0.0% |
| SAT–IAH | San Antonio to Houston | 184 | 79.3% | 4.7 min | 0.0% |
| SAT–ORD | San Antonio to Chicago | 179 | 82.1% | 3.9 min | 1.1% |
| SAT–LAS | San Antonio to Las Vegas | 175 | 72.0% | 8.6 min | 0.6% |
| SAT–LAX | San Antonio to Los Angeles | 149 | 79.2% | 12.4 min | 2.0% |
| SAT–CLT | San Antonio to Charlotte | 121 | 86.8% | 3.3 min | 0.0% |
| SAT–HOU | San Antonio to Houston | 103 | 55.3% | 18.9 min | 0.0% |
| SAT–BNA | San Antonio to Nashville | 88 | 71.6% | 13.0 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left SAT on time in May 2026?
76.3% of 3,485 scheduled domestic departures left less than 15 minutes late, and 79.3% reached their destination on time. The national figures that month were 77.1% and 77.6%.
How does that compare with a year earlier?
In May 2025, 77.7% of 3,758 departures left on time and 1.2% were cancelled, against 76.3% and 1.4% in May 2026.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 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.