Route Reliability
St. Louis → Los Angeles
STL–LAX · 1,592 miles · St. Louis Lambert International Airport to Los Angeles International Airport
- 75%
- Arrive within 15 minutes
- 12 min
- Average arrival delay
- 0.2%
- Cancelled
- 1,029
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Southwest Airlines76%675 flights
- 2.American Airlines75%354 flights
What the data says
Morning-you made the right choice.
STL–LAX flights departing between 3–6 AM arrived on time 94% of the time, versus 50% between 9 PM–12 AM.
Mondays have been rough.
STL–LAX flights arrived on time 84% of the time on Tuesdays and just 63% on Mondays. That gap is worth planning around.
Not much between Southwest Airlines and American Airlines.
On this route they all land within 75% to 76% on time. Pick on schedule and price.
It basically never cancels.
Out of 1,029 scheduled flights, only 0.2% were cancelled.
Flights on this route
The breakdown
- Mon63%(158 flights)
- Tue84%(134 flights)
- Wed83%(131 flights)
- Thu77%(153 flights)
- Fri73%(161 flights)
- Sat79%(133 flights)
- Sun72%(156 flights)
- 3–6 AM94%(53 flights)
- 6–9 AM80%(537 flights)
- 9 AM–12 PM85%(107 flights)
- 12–3 PM71%(49 flights)
- 3–6 PM56%(16 flights)
- 6–9 PM67%(172 flights)
- 9 PM–12 AM50%(92 flights)
Jun 72% → May 76% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 72% | 89 |
| July 2025 | 77% | 93 |
| August 2025 | 84% | 92 |
| September 2025 | 88% | 82 |
| October 2025 | 67% | 96 |
| November 2025 | 82% | 101 |
| December 2025 | 71% | 103 |
| January 2026 | 75% | 75 |
| February 2026 | 77% | 73 |
| March 2026 | 77% | 75 |
| April 2026 | 57% | 72 |
| May 2026 | 76% | 75 |
Same trip, other airports
Keep nerding
Based on 1,029 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.