Flight Reliability
AS 1257 · Alaska Airlines
Seattle → Santa Ana (SEA–SNA)
45
Bring Snacks
WanderNerd Reliability Score
- 62%
- Arrive within 15 minutes
- 13 min
- Average arrival delay
- 5.8%
- Cancelled
- 8 min
- Median arrival delay
Based on 69 historical flights. Data through May 2026.
What the data says
Well behind the SEA–SNA route.
AS 1257 arrived on time 62% of the time, versus 85% across the SEA–SNA route.
Well behind the Alaska Airlines network.
AS 1257 arrived on time 62% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon60%(10 flights)
- Tue—(9 flights)
- Wed—(9 flights)
- Thu60%(10 flights)
- Fri60%(10 flights)
- Sat—(9 flights)
- Sun—(8 flights)
50%
Aug
Jun 63% → Aug 50% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 63% | 19 |
| July 2025 | 68% | 28 |
| August 2025 | 50% | 18 |
- Departures on time
- 63%
- Diverted
- 0%
- Flights flown
- 65
- Months covered
- 3
Same route, other flights
Keep nerding
Based on 69 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.