Flight Reliability
AS 1373 · Alaska Airlines
San Diego → Seattle (SAN–SEA)97% of its flights flew this route. The rest (SEA–ANC, SEA–PSP) are included in these numbers.
86
Pretty Reliable
WanderNerd Reliability Score
- 91%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 3.4%
- Cancelled
- 10 min early
- Median arrival delay
Based on 59 historical flights. Data through May 2026.
What the data says
Better than the SAN–SEA route average.
AS 1373 arrived on time 91% of the time, versus 81% across the SAN–SEA route.
Better than the Alaska Airlines network average.
AS 1373 arrived on time 91% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon91%(11 flights)
- Tue—(8 flights)
- Wed—(9 flights)
- Thu—(8 flights)
- Fri—(7 flights)
- Sat—(7 flights)
- Sun—(7 flights)
- 6–9 AM91%(56 flights)
- 12–3 PM—(1 flights)
- Departures on time
- 91%
- Diverted
- 0%
- Flights flown
- 57
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 59 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.