Flight Reliability
AS 3329 · Alaska Airlines
Seattle → Sacramento (SEA–SMF)99% of its flights flew this route. The rest (SEA–PSC) are included in these numbers.
99
Nerd Approved
WanderNerd Reliability Score
- 94%
- Arrive within 15 minutes
- 0 min
- Average arrival delay
- 0.6%
- Cancelled
- 5 min early
- Median arrival delay
Based on 159 historical flights. Data through May 2026.
What the data says
The 6–9 AM departure wins.
AS 3329 departing between 6–9 AM arrived on time 99% of the time, versus 88% between 9 AM–12 PM.
Wednesday is the weak spot.
AS 3329 arrived on time 96% of the time on Tuesdays. On Wednesdays: 89%.
Better than the SEA–SMF route average.
AS 3329 arrived on time 94% of the time, versus 82% across the SEA–SMF route.
Better than the Alaska Airlines network average.
AS 3329 arrived on time 94% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon95%(21 flights)
- Tue96%(24 flights)
- Wed89%(26 flights)
- Thu91%(21 flights)
- Fri95%(21 flights)
- Sat96%(24 flights)
- Sun95%(21 flights)
- 6–9 AM99%(80 flights)
- 9 AM–12 PM88%(77 flights)
- 9 PM–12 AM—(1 flights)
96%
Oct
Jun 100% → Oct 96% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 100% | 30 |
| July 2025 | 97% | 31 |
| August 2025 | 100% | 31 |
| September 2025 | 77% | 30 |
| October 2025 | 96% | 27 |
- Departures on time
- 92%
- Diverted
- 0%
- Flights flown
- 158
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 159 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.