Route Reliability
San Diego → STS
SAN–STS · 508 miles · San Diego International Airport to STS Airport
- 78%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 4.1%
- Cancelled
- 940
- Flights in the data
Data through May 2026.
Airlines on this route
- Alaska Airlines79% on time · 854 flights
- Southwest Airlines70% on time · 86 flights
Too little history on this route to call a winner. We rank airlines only after 100 flights each.
What the data says
Morning-you made the right choice.
SAN–STS flights departing between 6–9 AM arrived on time 84% of the time, versus 62% between 6–9 PM.
Friday is doing you no favors.
SAN–STS flights arrived on time 85% of the time on Saturdays and just 65% on Fridays. That gap is worth planning around.
Keep a backup plan handy.
This route was cancelled 4.1% of the time. Typical for U.S. flights is around 1–2%.
Ticking up lately.
SAN–STS flights arrived on time 80% of the time over the last three months in the data, compared with 74% 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
- Mon77%(137 flights)
- Tue84%(109 flights)
- Wed85%(119 flights)
- Thu83%(138 flights)
- Fri65%(138 flights)
- Sat85%(108 flights)
- Sun69%(144 flights)
- 6–9 AM84%(226 flights)
- 9 AM–12 PM82%(77 flights)
- 12–3 PM73%(186 flights)
- 3–6 PM74%(82 flights)
- 6–9 PM62%(52 flights)
- 9 PM–12 AM79%(270 flights)
Jun 74% → May 75% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 74% | 58 |
| July 2025 | 80% | 61 |
| August 2025 | 82% | 71 |
| September 2025 | 81% | 78 |
| October 2025 | 79% | 81 |
| November 2025 | 74% | 77 |
| December 2025 | 61% | 51 |
| January 2026 | 83% | 48 |
| February 2026 | 77% | 43 |
| March 2026 | 87% | 68 |
| April 2026 | 79% | 121 |
| May 2026 | 75% | 136 |
Keep nerding
Based on 940 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.