Airports › Austin (AUS) › September 2025
Airport month · September 2025
Austin - Bergstrom International in September 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 September 2025, reporting carriers scheduled 6,889 domestic departures from Austin - Bergstrom International (AUS). 84.1% left less than 15 minutes late and 83.7% reached their destination on time; 0.4% were cancelled.
Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so AUS departures were 1.0 points above the national departure figure.
A year earlier, in September 2024, the airport had 6,816 departures with 86.3% leaving on time: a change of −2.2 points, with flights up 1%.
Flights arriving at AUS that month were on time 84.8% of the time (6,886 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 26%.
- On time 83.7%
- Arrived 15+ minutes late 15.7%
- Cancelled 0.4%
- Diverted 0.1%
September 2025 against a year earlier, the airport's year and the nation
| Measure | Sep 2025 | Sep 2024 | AUS, 12 months to Jul 2026 | All reported flights, Sep 2025 |
|---|---|---|---|---|
| Departed on time | 84.1% | 86.3% | 74.2% | 83.1% |
| Arrived on time | 83.7% | 86.3% | 75.5% | 82.8% |
| Cancelled | 0.4% | 0.3% | 1.2% | 0.5% |
| Average departure delay (late minutes only) | 11.6 min | 9.5 min | 18.4 min | 12.2 min |
| Scheduled departures a day | 230 | 227 | 245 | 18,748 |
| Scheduled departures | 6,889 | 6,816 | 89,507 | 562,439 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| WN Southwest Airlines | 2,862 | 42% | 83.0% | 1.7 min | 0.1% |
| DL Delta Air Lines | 1,069 | 16% | 88.8% | -2.8 min | 0.3% |
| UA United Airlines | 914 | 13% | 84.6% | 0.3 min | 0.5% |
| AA American Airlines | 820 | 12% | 78.9% | 16.9 min | 1.2% |
| OO SkyWest Airlines | 639 | 9% | 87.0% | -2.5 min | 0.5% |
| AS Alaska Airlines | 179 | 3% | 87.2% | -2.2 min | 0.0% |
| F9 Frontier Airlines | 179 | 3% | 77.1% | 1.7 min | 1.1% |
| MQ Envoy Air | 99 | 1% | 84.8% | 5.5 min | 1.0% |
| NK Spirit Airlines | 57 | 1% | 84.2% | 3.7 min | 0.0% |
| G4 Allegiant Air | 42 | 1% | 69.0% | 9.4 min | 0.0% |
| B6 JetBlue Airways | 26 | 0% | 38.5% | 47.4 min | 0.0% |
| YX Republic Airline | 3 | 0% | 33.3% | 43.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| AUS–ATL | Austin to Atlanta | 385 | 90.6% | -7.2 min | 0.0% |
| AUS–DEN | Austin to Denver | 377 | 81.2% | 3.1 min | 0.8% |
| AUS–DFW | Austin to Dallas/Fort Worth | 370 | 77.0% | 17.5 min | 2.4% |
| AUS–LAX | Austin to Los Angeles | 270 | 91.1% | -1.6 min | 0.0% |
| AUS–ORD | Austin to Chicago | 258 | 77.1% | 6.2 min | 0.4% |
| AUS–IAH | Austin to Houston | 237 | 76.8% | 5.9 min | 0.4% |
| AUS–PHX | Austin to Phoenix | 236 | 79.2% | 10.5 min | 1.7% |
| AUS–BNA | Austin to Nashville | 228 | 86.4% | -2.1 min | 0.0% |
| AUS–SFO | Austin to San Francisco | 228 | 83.3% | 2.8 min | 0.0% |
| AUS–LAS | Austin to Las Vegas | 218 | 74.8% | 7.0 min | 0.5% |
| AUS–DAL | Austin to Dallas | 189 | 86.8% | -1.0 min | 0.0% |
| AUS–MSY | Austin to New Orleans | 177 | 87.0% | -6.4 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left AUS on time in September 2025?
84.1% of 6,889 scheduled domestic departures left less than 15 minutes late, and 83.7% reached their destination on time. The national figures that month were 83.1% and 82.8%.
How does that compare with a year earlier?
In September 2024, 86.3% of 6,816 departures left on time and 0.3% were cancelled, against 84.1% and 0.4% in September 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for AUS · methodology · corrections.