Flight Reliability
AS 3459 · Alaska Airlines
San Diego → San Jose (SAN–SJC)
80
Pretty Reliable
WanderNerd Reliability Score
- 79%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 1.7%
- Cancelled
- 8 min early
- Median arrival delay
Based on 286 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
AS 3459 departing between 9 PM–12 AM arrived on time 84% of the time, versus 77% between 6–9 PM.
Thursdays have been rough.
AS 3459 arrived on time 94% of the time on Wednesdays and just 67% on Thursdays. That gap is worth planning around.
The breakdown
- Mon77%(44 flights)
- Tue86%(36 flights)
- Wed94%(34 flights)
- Thu67%(43 flights)
- Fri70%(43 flights)
- Sat90%(38 flights)
- Sun74%(43 flights)
- 6–9 PM77%(199 flights)
- 9 PM–12 AM84%(82 flights)
73%
Apr
Jun 76% → Apr 73% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 25 |
| July 2025 | 81% | 31 |
| August 2025 | 77% | 31 |
| September 2025 | 79% | 29 |
| October 2025 | 69% | 29 |
| November 2025 | 86% | 28 |
| December 2025 | 86% | 22 |
| February 2026 | 88% | 16 |
| March 2026 | 74% | 31 |
| April 2026 | 73% | 26 |
- Departures on time
- 75%
- Diverted
- 0%
- Flights flown
- 281
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 286 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.