Flight Reliability
AS 3359 · Alaska Airlines
San Diego → San Jose (SAN–SJC)
96
Nerd Approved
WanderNerd Reliability Score
- 89%
- Arrive within 15 minutes
- 5 min early
- Average arrival delay
- 0.4%
- Cancelled
- 9 min early
- Median arrival delay
Based on 280 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
AS 3359 arrived on time 98% of the time on Wednesdays and just 81% on Fridays. That gap is worth planning around.
Better than the SAN–SJC route average.
AS 3359 arrived on time 89% of the time, versus 79% across the SAN–SJC route.
Better than the Alaska Airlines network average.
AS 3359 arrived on time 89% of the time, versus 80% across the Alaska Airlines network.
Trending in the right direction.
AS 3359 arrived on time 92% of the time over the last three months in the data, compared with 85% in the three months before that.
The breakdown
- Mon91%(46 flights)
- Tue92%(39 flights)
- Wed98%(43 flights)
- Thu89%(45 flights)
- Fri81%(47 flights)
- Sat95%(19 flights)
- Sun83%(40 flights)
93%
May
Jun 82% → May 93% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 82% | 27 |
| July 2025 | 100% | 27 |
| August 2025 | 82% | 28 |
| September 2025 | 93% | 30 |
| October 2025 | 90% | 31 |
| November 2025 | 83% | 29 |
| December 2025 | 78% | 18 |
| January 2026 | 93% | 14 |
| March 2026 | 86% | 14 |
| April 2026 | 96% | 26 |
| May 2026 | 93% | 29 |
- Departures on time
- 92%
- Diverted
- 0%
- Flights flown
- 279
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 280 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.