Flight Reliability
AS 981 · Alaska Airlines
San Francisco → Seattle (SFO–SEA)
90
Nerd Approved
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 1.1%
- Cancelled
- 0 min
- Median arrival delay
Based on 93 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
AS 981 arrived on time 100% of the time on Mondays and just 75% on Saturdays. That gap is worth planning around.
Better than the SFO–SEA route average.
AS 981 arrived on time 86% of the time, versus 75% across the SFO–SEA route.
A bit ahead of the Alaska Airlines network.
AS 981 arrived on time 86% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon100%(16 flights)
- Tue81%(16 flights)
- Wed—(7 flights)
- Thu—(7 flights)
- Fri87%(15 flights)
- Sat75%(16 flights)
- Sun80%(15 flights)
86%
Sep
Jun 86% → Sep 86% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 86% | 14 |
| July 2025 | 85% | 20 |
| August 2025 | 85% | 26 |
| September 2025 | 86% | 29 |
- Departures on time
- 96%
- Diverted
- 0%
- Flights flown
- 92
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 93 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.