Flight Reliability
AS 1203 · Alaska Airlines
Santa Ana → Seattle (SNA–SEA)
52
A Little Dicey
WanderNerd Reliability Score
- 62%
- Arrive within 15 minutes
- 11 min
- Average arrival delay
- 4.4%
- Cancelled
- 7 min
- Median arrival delay
Based on 136 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
AS 1203 arrived on time 87% of the time on Saturdays and just 42% on Sundays. That gap is worth planning around.
Well behind the SNA–SEA route.
AS 1203 arrived on time 62% of the time, versus 85% across the SNA–SEA route.
Well behind the Alaska Airlines network.
AS 1203 arrived on time 62% of the time, versus 80% across the Alaska Airlines network.
Keep a backup plan handy.
AS 1203 was cancelled 4.4% of the time. Typical for U.S. flights is around 1–2%.
The breakdown
- Mon71%(21 flights)
- Tue65%(17 flights)
- Wed61%(18 flights)
- Thu50%(20 flights)
- Fri65%(20 flights)
- Sat87%(15 flights)
- Sun42%(19 flights)
79%
Oct
Jun 43% → Oct 79% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 43% | 30 |
| July 2025 | 59% | 27 |
| August 2025 | 53% | 30 |
| September 2025 | 86% | 29 |
| October 2025 | 79% | 14 |
- Departures on time
- 72%
- Diverted
- 0%
- Flights flown
- 130
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 136 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.