Flight Reliability
AS 652 · Alaska Airlines
San Diego → Seattle (SAN–SEA)
91
Nerd Approved
WanderNerd Reliability Score
- 87%
- Arrive within 15 minutes
- 6 min early
- Average arrival delay
- 1.0%
- Cancelled
- 11 min early
- Median arrival delay
Based on 105 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
AS 652 arrived on time 95% of the time on Thursdays and just 80% on Mondays. That gap is worth planning around.
A bit ahead of the SAN–SEA route.
AS 652 arrived on time 87% of the time, versus 81% across the SAN–SEA route.
A bit ahead of the Alaska Airlines network.
AS 652 arrived on time 87% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon80%(20 flights)
- Tue—(8 flights)
- Wed—(8 flights)
- Thu95%(20 flights)
- Fri81%(21 flights)
- Sat—(7 flights)
- Sun85%(20 flights)
94%
May
Jan 79% → May 94% on time
| Month | On-time percentage | Flights |
|---|---|---|
| January 2026 | 79% | 14 |
| February 2026 | 96% | 23 |
| March 2026 | 83% | 24 |
| April 2026 | 94% | 17 |
| May 2026 | 94% | 16 |
- Departures on time
- 79%
- Diverted
- 0%
- Flights flown
- 104
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 105 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.