Route Reliability
STS → Los Angeles
STS–LAX · 399 miles · STS Airport to Los Angeles International Airport
- 82%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 3.6%
- Cancelled
- 870
- Flights in the data
Data through May 2026.
Alaska Airlines is the only airline in this data on this route, arriving on time 82% of the time across 870 flights. No comparison to make.
What the data says
The 12–3 PM departure wins.
STS–LAX flights departing between 12–3 PM arrived on time 96% of the time, versus 73% between 6–9 PM.
Friday is doing you no favors.
STS–LAX flights arrived on time 92% of the time on Saturdays and just 76% on Fridays. That gap is worth planning around.
Keep a backup plan handy.
This route was cancelled 3.6% of the time. Typical for U.S. flights is around 1–2%.
Ticking up lately.
STS–LAX flights arrived on time 86% of the time over the last three months in the data, compared with 83% in the three months before that.
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
- Mon78%(134 flights)
- Tue84%(102 flights)
- Wed82%(100 flights)
- Thu84%(135 flights)
- Fri76%(131 flights)
- Sat92%(100 flights)
- Sun80%(137 flights)
- 6–9 AM89%(336 flights)
- 12–3 PM96%(52 flights)
- 3–6 PM77%(177 flights)
- 6–9 PM73%(274 flights)
Jun 80% → May 82% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 80% | 79 |
| July 2025 | 76% | 91 |
| August 2025 | 84% | 88 |
| September 2025 | 79% | 77 |
| October 2025 | 84% | 76 |
| November 2025 | 77% | 73 |
| December 2025 | 77% | 65 |
| January 2026 | 82% | 51 |
| February 2026 | 88% | 43 |
| March 2026 | 87% | 63 |
| April 2026 | 89% | 72 |
| May 2026 | 82% | 61 |
Same trip, other airports
Keep nerding
Based on 870 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.