Flight Reliability
AS 3301 · Alaska Airlines
Austin → San Diego (AUS–SAN)91% of its flights flew this route. The rest (BUR–STS) are included in these numbers.
83
Pretty Reliable
WanderNerd Reliability Score
- 82%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 1.2%
- Cancelled
- 6 min early
- Median arrival delay
Based on 333 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
AS 3301 departing between 12–3 PM arrived on time 83% of the time, versus 74% between 3–6 PM.
Thursday is the weak spot.
AS 3301 arrived on time 88% of the time on Tuesdays. On Thursdays: 78%.
A bit ahead of the AUS–SAN route.
AS 3301 arrived on time 82% of the time, versus 76% across the AUS–SAN route.
The breakdown
- Mon78%(50 flights)
- Tue88%(50 flights)
- Wed84%(44 flights)
- Thu78%(50 flights)
- Fri80%(50 flights)
- Sat84%(37 flights)
- Sun83%(46 flights)
- 12–3 PM83%(308 flights)
- 3–6 PM74%(19 flights)
81%
May
Jun 78% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 78% | 27 |
| July 2025 | 77% | 26 |
| August 2025 | 75% | 28 |
| September 2025 | 90% | 30 |
| October 2025 | 82% | 28 |
| November 2025 | 79% | 29 |
| December 2025 | 69% | 26 |
| January 2026 | 89% | 28 |
| February 2026 | 96% | 28 |
| March 2026 | 80% | 25 |
| April 2026 | 86% | 21 |
| May 2026 | 81% | 31 |
- Departures on time
- 80%
- Diverted
- 0.6%
- Flights flown
- 327
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 333 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.