Flight Reliability
AS 79 · Alaska Airlines
Seattle → Anchorage (SEA–ANC)83% of its flights flew this route. The rest (SFO–OGG, LAX–LAS) are included in these numbers.
- 83%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 1.9%
- Cancelled
- 4 min early
- Median arrival delay
Based on 206 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
AS 79 departing between 6–9 AM arrived on time 84% of the time, versus 77% between 6–9 PM.
Friday is doing you no favors.
AS 79 arrived on time 89% of the time on Wednesdays. On Fridays: 76%.
Better than the SEA–ANC route average.
AS 79 arrived on time 83% of the time, versus 75% across the SEA–ANC route.
Slipping a little lately.
AS 79 arrived on time 85% of the time over the last three months in the data, compared with 89% in the three months before that.
The breakdown
- Mon83%(30 flights)
- Tue88%(25 flights)
- Wed89%(26 flights)
- Thu79%(33 flights)
- Fri76%(29 flights)
- Sat79%(28 flights)
- Sun87%(31 flights)
- 3–6 AM—(4 flights)
- 6–9 AM84%(167 flights)
- 12–3 PM—(5 flights)
- 6–9 PM77%(26 flights)
Jun 84% → May 93% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 84% | 19 |
| July 2025 | 60% | 30 |
| August 2025 | 79% | 29 |
| September 2025 | 100% | 29 |
| October 2025 | 88% | 24 |
| March 2026 | 80% | 10 |
| April 2026 | 83% | 23 |
| May 2026 | 93% | 28 |
- Departures on time
- 87%
- Diverted
- 0%
- Flights flown
- 202
- Months covered
- 11
Same route, other flights
Keep nerding
Based on 206 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.