Route Reliability
Austin → St. Louis
AUS–STL · 721 miles · Austin–Bergstrom International Airport to St. Louis Lambert International Airport
- 79%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 0.1%
- Cancelled
- 982
- Flights in the data
Data through May 2026.
Southwest Airlines is the only airline in this data on this route, arriving on time 79% of the time across 982 flights. No comparison to make.
What the data says
Morning-you made the right choice.
AUS–STL flights departing between 3–6 AM arrived on time 98% of the time, versus 64% between 3–6 PM.
Sunday scaries are real for this one.
AUS–STL flights arrived on time 86% of the time on Wednesdays and just 68% on Sundays. That gap is worth planning around.
It basically never cancels.
Out of 982 scheduled flights, only 0.1% were cancelled.
Recent months have been rougher.
AUS–STL flights arrived on time 77% of the time over the last three months in the data, compared with 85% in the three months before that.
Flights on this route
The breakdown
- Mon78%(148 flights)
- Tue85%(138 flights)
- Wed86%(138 flights)
- Thu81%(149 flights)
- Fri79%(150 flights)
- Sat82%(88 flights)
- Sun68%(169 flights)
- 3–6 AM98%(179 flights)
- 6–9 AM96%(159 flights)
- 9 AM–12 PM77%(48 flights)
- 12–3 PM77%(243 flights)
- 3–6 PM64%(345 flights)
- 6–9 PM—(6 flights)
Jun 77% → May 74% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 77% | 91 |
| July 2025 | 72% | 93 |
| August 2025 | 78% | 76 |
| September 2025 | 80% | 73 |
| October 2025 | 83% | 83 |
| November 2025 | 81% | 85 |
| December 2025 | 82% | 91 |
| January 2026 | 90% | 62 |
| February 2026 | 83% | 59 |
| March 2026 | 72% | 86 |
| April 2026 | 85% | 89 |
| May 2026 | 74% | 92 |
Keep nerding
Based on 982 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.