Flight Reliability
AS 1179 · Alaska Airlines
Los Angeles → Seattle (LAX–SEA)82% of its flights flew this route. The rest (PDX–SNA) are included in these numbers.
81
Pretty Reliable
WanderNerd Reliability Score
- 80%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 1.6%
- Cancelled
- 0 min
- Median arrival delay
Based on 125 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
AS 1179 departing between 3–6 PM arrived on time 86% of the time, versus 78% between 6–9 AM.
Friday is doing you no favors.
AS 1179 arrived on time 90% of the time on Saturdays and just 63% on Fridays. That gap is worth planning around.
A bit behind the LAX–SEA route.
AS 1179 arrived on time 80% of the time, versus 86% across the LAX–SEA route.
The breakdown
- Mon89%(18 flights)
- Tue90%(19 flights)
- Wed84%(19 flights)
- Thu75%(20 flights)
- Fri63%(19 flights)
- Sat90%(10 flights)
- Sun72%(18 flights)
- 6–9 AM78%(101 flights)
- 3–6 PM86%(22 flights)
80%
Oct
Jun 57% → Oct 80% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 57% | 14 |
| July 2025 | 70% | 27 |
| August 2025 | 89% | 27 |
| September 2025 | 90% | 30 |
| October 2025 | 80% | 25 |
- Departures on time
- 86%
- Diverted
- 0%
- Flights flown
- 123
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 125 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.