Flight Reliability
AS 1256 · Alaska Airlines
Seattle → Palm Springs (SEA–PSP)99% of its flights flew this route. The rest (HNL–OGG) are included in these numbers.
89
Pretty Reliable
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 0.7%
- Cancelled
- 3 min early
- Median arrival delay
Based on 148 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
AS 1256 arrived on time 95% of the time on Mondays and just 76% on Sundays. That gap is worth planning around.
A bit ahead of the Alaska Airlines network.
AS 1256 arrived on time 84% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon95%(20 flights)
- Tue81%(21 flights)
- Wed77%(22 flights)
- Thu86%(21 flights)
- Fri86%(21 flights)
- Sat86%(21 flights)
- Sun76%(21 flights)
- 9 AM–12 PM84%(146 flights)
- 12–3 PM—(1 flights)
68%
Oct
Jun 87% → Oct 68% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 87% | 30 |
| July 2025 | 93% | 30 |
| August 2025 | 77% | 31 |
| September 2025 | 93% | 30 |
| October 2025 | 68% | 25 |
- Departures on time
- 84%
- Diverted
- 0%
- Flights flown
- 147
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 148 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.