Flight Reliability
AS 175 · Alaska Airlines
Seattle → Anchorage (SEA–ANC)96% of its flights flew this route. The rest (LAX–LIH, LAX–SEA) are included in these numbers.
- 71%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 0.6%
- Cancelled
- 3 min
- Median arrival delay
Based on 174 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
AS 175 departing between 9 AM–12 PM arrived on time 87% of the time, versus 69% between 12–3 PM.
Thursdays have been rough.
AS 175 arrived on time 82% of the time on Sundays and just 57% on Thursdays. That gap is worth planning around.
A bit behind the SEA–ANC route.
AS 175 arrived on time 71% of the time, versus 75% across the SEA–ANC route.
Lagging the Alaska Airlines network.
AS 175 arrived on time 71% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon73%(26 flights)
- Tue77%(22 flights)
- Wed76%(21 flights)
- Thu57%(21 flights)
- Fri60%(25 flights)
- Sat70%(30 flights)
- Sun82%(28 flights)
- 9 AM–12 PM87%(23 flights)
- 12–3 PM69%(144 flights)
- 3–6 PM—(6 flights)
Jun 59% → Nov 83% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 59% | 27 |
| July 2025 | 68% | 31 |
| August 2025 | 45% | 31 |
| September 2025 | 90% | 30 |
| October 2025 | 86% | 28 |
| November 2025 | 83% | 18 |
- Departures on time
- 72%
- Diverted
- 0%
- Flights flown
- 173
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 174 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.