Flight Reliability
AS 680 · Alaska Airlines
Seattle → San Francisco (SEA–SFO)95% of its flights flew this route. The rest (PDX–PHX) are included in these numbers.
74
Usually Fine
WanderNerd Reliability Score
- 72%
- Arrive within 15 minutes
- 10 min
- Average arrival delay
- 1.0%
- Cancelled
- 0 min
- Median arrival delay
Based on 198 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
AS 680 arrived on time 90% of the time on Tuesdays and just 59% on Sundays. That gap is worth planning around.
Lagging the Alaska Airlines network.
AS 680 arrived on time 72% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon72%(32 flights)
- Tue90%(30 flights)
- Wed82%(28 flights)
- Thu63%(30 flights)
- Fri69%(26 flights)
- Sat71%(17 flights)
- Sun59%(32 flights)
- 12–3 PM73%(187 flights)
- 3–6 PM—(8 flights)
48%
May
Nov 69% → May 48% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 69% | 26 |
| December 2025 | 58% | 24 |
| January 2026 | 84% | 25 |
| February 2026 | 78% | 27 |
| March 2026 | 93% | 28 |
| April 2026 | 73% | 26 |
| May 2026 | 48% | 25 |
- Departures on time
- 78%
- Diverted
- 0.5%
- Flights flown
- 195
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 198 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.