Flight Reliability
AS 105 · Alaska Airlines
Seattle → Anchorage (SEA–ANC)94% of its flights flew this route. The rest (SEA–AUS, FAI–SEA) are included in these numbers.
- 74%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 0.5%
- Cancelled
- 2 min early
- Median arrival delay
Based on 196 historical flights. Data through May 2026.
What the data says
6–9 PM has a slight edge.
Departures between 6–9 PM arrived on time 74% of the time, against 70% between 9 PM–12 AM.
Friday is doing you no favors.
AS 105 arrived on time 82% of the time on Tuesdays and just 67% on Fridays. That gap is worth planning around.
A bit behind the Alaska Airlines network.
AS 105 arrived on time 74% of the time, versus 80% across the Alaska Airlines network.
Recent months have been rougher.
AS 105 arrived on time 68% of the time over the last three months in the data, compared with 81% in the three months before that.
The breakdown
- Mon69%(32 flights)
- Tue82%(22 flights)
- Wed81%(31 flights)
- Thu75%(32 flights)
- Fri67%(21 flights)
- Sat82%(22 flights)
- Sun69%(35 flights)
- 12–3 PM—(1 flights)
- 3–6 PM—(1 flights)
- 6–9 PM74%(183 flights)
- 9 PM–12 AM70%(10 flights)
Jun 76% → Apr 91% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 21 |
| July 2025 | 61% | 18 |
| August 2025 | 75% | 20 |
| September 2025 | 90% | 30 |
| October 2025 | 72% | 29 |
| November 2025 | 80% | 20 |
| December 2025 | 50% | 14 |
| March 2026 | 63% | 16 |
| April 2026 | 91% | 21 |
- Departures on time
- 70%
- Diverted
- 0%
- Flights flown
- 195
- Months covered
- 10
Same route, other flights
Keep nerding
Based on 196 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.