Flight Reliability
AS 980 · Alaska Airlines
Seattle → San Francisco (SEA–SFO)
54
A Little Dicey
WanderNerd Reliability Score
- 55%
- Arrive within 15 minutes
- 17 min
- Average arrival delay
- 1.4%
- Cancelled
- 11 min
- Median arrival delay
Based on 74 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
AS 980 arrived on time 71% of the time on Thursdays and just 31% on Sundays. That gap is worth planning around.
Well behind the SEA–SFO route.
AS 980 arrived on time 55% of the time, versus 70% across the SEA–SFO route.
Well behind the Alaska Airlines network.
AS 980 arrived on time 55% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon67%(15 flights)
- Tue—(8 flights)
- Wed—(2 flights)
- Thu71%(17 flights)
- Fri40%(15 flights)
- Sat—(0 flights)
- Sun31%(16 flights)
88%
Sep
Jun 36% → Sep 88% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 36% | 14 |
| July 2025 | 36% | 22 |
| August 2025 | 58% | 19 |
| September 2025 | 88% | 17 |
- Departures on time
- 55%
- Diverted
- 0%
- Flights flown
- 73
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 74 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.