Flight Reliability
AS 1240 · Alaska Airlines
Los Angeles → Portland (LAX–PDX)91% of its flights flew this route. The rest (SEA–OAK, LIH–OGG) are included in these numbers.
92
Nerd Approved
WanderNerd Reliability Score
- 90%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 1.5%
- Cancelled
- 7 min early
- Median arrival delay
Based on 132 historical flights. Data through May 2026.
What the data says
Tuesdays have been rough.
AS 1240 arrived on time 95% of the time on Thursdays and just 76% on Tuesdays. That gap is worth planning around.
A bit ahead of the LAX–PDX route.
AS 1240 arrived on time 90% of the time, versus 86% across the LAX–PDX route.
Better than the Alaska Airlines network average.
AS 1240 arrived on time 90% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon90%(20 flights)
- Tue76%(21 flights)
- Wed86%(22 flights)
- Thu95%(21 flights)
- Fri95%(20 flights)
- Sat—(5 flights)
- Sun95%(21 flights)
- 9 AM–12 PM90%(129 flights)
- 12–3 PM—(1 flights)
100%
Oct
Jun 74% → Oct 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 74% | 27 |
| July 2025 | 92% | 26 |
| August 2025 | 85% | 26 |
| September 2025 | 100% | 26 |
| October 2025 | 100% | 24 |
- Departures on time
- 90%
- Diverted
- 0%
- Flights flown
- 130
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 132 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.