Flight Reliability
AS 1151 · Alaska Airlines
Oakland → Seattle (OAK–SEA)98% of its flights flew this route. The rest (ITO–HNL, LIH–HNL) are included in these numbers.
94
Nerd Approved
WanderNerd Reliability Score
- 92%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 1.5%
- Cancelled
- 7 min early
- Median arrival delay
Based on 137 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
AS 1151 arrived on time 100% of the time on Mondays and just 80% on Saturdays. That gap is worth planning around.
Better than the OAK–SEA route average.
AS 1151 arrived on time 92% of the time, versus 77% across the OAK–SEA route.
Better than the Alaska Airlines network average.
AS 1151 arrived on time 92% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon100%(18 flights)
- Tue95%(19 flights)
- Wed86%(21 flights)
- Thu100%(19 flights)
- Fri90%(19 flights)
- Sat80%(20 flights)
- Sun95%(19 flights)
- 6–9 AM92%(132 flights)
- 12–3 PM—(1 flights)
- 3–6 PM—(2 flights)
96%
Oct
Jun 79% → Oct 96% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 79% | 19 |
| July 2025 | 100% | 30 |
| August 2025 | 87% | 30 |
| September 2025 | 97% | 29 |
| October 2025 | 96% | 24 |
- Departures on time
- 96%
- Diverted
- 0%
- Flights flown
- 135
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 137 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.