Route Reliability
St. Louis → Valparaiso
STL–VPS · 610 miles · St. Louis Lambert International Airport to Destin–Fort Walton Beach Airport
- 78%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 0%
- Cancelled
- 138
- Flights in the data
Data through May 2026.
Southwest Airlines is the only airline in this data on this route, arriving on time 78% of the time across 138 flights. No comparison to make.
What the data says
The 3–6 PM departure wins.
STL–VPS flights departing between 3–6 PM arrived on time 84% of the time, versus 71% between 12–3 PM.
Any day works.
Weekday differences are small here: 79% to 81% on time across the week.
It basically never cancels.
Out of 138 scheduled flights, only 0.0% were cancelled.
Trending in the right direction.
STL–VPS flights arrived on time 89% of the time over the last three months in the data, compared with 76% in the three months before that.
Flights on this route
The breakdown
- Mon—(9 flights)
- Tue—(8 flights)
- Wed—(8 flights)
- Thu—(9 flights)
- Fri—(8 flights)
- Sat81%(62 flights)
- Sun79%(34 flights)
- 6–9 AM—(6 flights)
- 9 AM–12 PM84%(37 flights)
- 12–3 PM71%(63 flights)
- 3–6 PM84%(32 flights)
Jun 65% → May 93% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 65% | 31 |
| July 2025 | 71% | 34 |
| August 2025 | 75% | 12 |
| October 2025 | 83% | 12 |
| March 2026 | 92% | 12 |
| April 2026 | 83% | 12 |
| May 2026 | 93% | 15 |
Keep nerding
Based on 138 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.