Flight Reliability
AS 655 · Alaska Airlines
Seattle → San Francisco (SEA–SFO)
79
Usually Fine
WanderNerd Reliability Score
- 71%
- Arrive within 15 minutes
- 10 min
- Average arrival delay
- 0%
- Cancelled
- 0 min
- Median arrival delay
Based on 213 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
AS 655 arrived on time 78% of the time on Sundays and just 58% on Fridays. That gap is worth planning around.
Lagging the Alaska Airlines network.
AS 655 arrived on time 71% of the time, versus 80% across the Alaska Airlines network.
It basically never cancels.
Out of 213 scheduled flights, only 0.0% were cancelled.
Trending in the right direction.
AS 655 arrived on time 77% of the time over the last three months in the data, compared with 68% in the three months before that.
The breakdown
- Mon65%(31 flights)
- Tue77%(31 flights)
- Wed71%(31 flights)
- Thu74%(31 flights)
- Fri58%(31 flights)
- Sat77%(26 flights)
- Sun78%(32 flights)
65%
May
Nov 59% → May 65% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 59% | 27 |
| December 2025 | 59% | 29 |
| January 2026 | 74% | 31 |
| February 2026 | 71% | 28 |
| March 2026 | 77% | 31 |
| April 2026 | 90% | 30 |
| May 2026 | 65% | 31 |
- Departures on time
- 63%
- Diverted
- 0%
- Flights flown
- 213
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 213 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.