Flight Reliability
AS 685 · Alaska Airlines
San Diego → Seattle (SAN–SEA)99% of its flights flew this route. The rest (SEA–BOI) are included in these numbers.
83
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 1.6%
- Cancelled
- 7 min early
- Median arrival delay
Based on 184 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
AS 685 departing between 12–3 PM arrived on time 89% of the time, versus 76% between 9 AM–12 PM.
Friday is doing you no favors.
AS 685 arrived on time 93% of the time on Wednesdays and just 73% on Fridays. That gap is worth planning around.
Trending in the right direction.
AS 685 arrived on time 86% of the time over the last three months in the data, compared with 75% in the three months before that.
The breakdown
- Mon77%(26 flights)
- Tue85%(26 flights)
- Wed93%(27 flights)
- Thu84%(25 flights)
- Fri73%(26 flights)
- Sat80%(25 flights)
- Sun77%(26 flights)
- 9 AM–12 PM76%(108 flights)
- 12–3 PM89%(73 flights)
90%
May
Nov 79% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 79% | 29 |
| December 2025 | 71% | 31 |
| January 2026 | 74% | 31 |
| February 2026 | 93% | 28 |
| March 2026 | 75% | 16 |
| May 2026 | 90% | 31 |
- Departures on time
- 79%
- Diverted
- 0%
- Flights flown
- 181
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 184 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.