Route Reliability
Las Vegas → St. Louis
LAS–STL · 1,371 miles · Harry Reid International Airport to St. Louis Lambert International Airport
- 81%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 0.3%
- Cancelled
- 2,059
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Frontier Airlines89%283 flights
- 2.Southwest Airlines79%1,776 flights
What the data says
Morning flights do better here.
LAS–STL flights departing between 3–6 AM arrived on time 97% of the time, versus 66% between 6–9 PM.
Sunday scaries are real for this one.
LAS–STL flights arrived on time 87% of the time on Saturdays. On Sundays: 76%.
Frontier Airlines runs this route best.
Frontier Airlines arrived on time 89% of the time on this route; Southwest Airlines managed 79%.
It basically never cancels.
Out of 2,059 scheduled flights, only 0.3% were cancelled.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon79%(330 flights)
- Tue83%(266 flights)
- Wed86%(261 flights)
- Thu76%(314 flights)
- Fri81%(327 flights)
- Sat87%(216 flights)
- Sun76%(335 flights)
- 3–6 AM97%(97 flights)
- 6–9 AM92%(612 flights)
- 9 AM–12 PM85%(231 flights)
- 12–3 PM71%(427 flights)
- 3–6 PM75%(436 flights)
- 6–9 PM66%(246 flights)
Jun 80% → May 78% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 80% | 166 |
| July 2025 | 75% | 162 |
| August 2025 | 79% | 159 |
| September 2025 | 82% | 163 |
| October 2025 | 79% | 191 |
| November 2025 | 84% | 172 |
| December 2025 | 80% | 187 |
| January 2026 | 85% | 161 |
| February 2026 | 85% | 146 |
| March 2026 | 81% | 206 |
| April 2026 | 80% | 166 |
| May 2026 | 78% | 170 |
Keep nerding
Based on 2,059 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.