Flight Reliability
AS 1199 · Alaska Airlines
San Diego → Seattle (SAN–SEA)
58
A Little Dicey
WanderNerd Reliability Score
- 59%
- Arrive within 15 minutes
- 16 min
- Average arrival delay
- 1.4%
- Cancelled
- 10 min
- Median arrival delay
Based on 146 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
AS 1199 arrived on time 70% of the time on Wednesdays and just 45% on Fridays. That gap is worth planning around.
Well behind the SAN–SEA route.
AS 1199 arrived on time 59% of the time, versus 81% across the SAN–SEA route.
Well behind the Alaska Airlines network.
AS 1199 arrived on time 59% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon67%(21 flights)
- Tue52%(21 flights)
- Wed70%(20 flights)
- Thu55%(20 flights)
- Fri45%(20 flights)
- Sat57%(21 flights)
- Sun67%(21 flights)
83%
Oct
Jun 43% → Oct 83% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 43% | 30 |
| July 2025 | 40% | 30 |
| August 2025 | 61% | 31 |
| September 2025 | 72% | 29 |
| October 2025 | 83% | 24 |
- Departures on time
- 69%
- Diverted
- 0%
- Flights flown
- 144
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 146 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.