Flight Reliability
AS 100 · Alaska Airlines
Anchorage → Seattle (ANC–SEA)81% of its flights flew this route. The rest (FAI–ANC, ANC–FAI) are included in these numbers.
- 85%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 2.3%
- Cancelled
- 7 min early
- Median arrival delay
Based on 220 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
AS 100 departing between 3–6 AM arrived on time 100% of the time, versus 79% between 9 PM–12 AM.
Friday is doing you no favors.
AS 100 arrived on time 100% of the time on Wednesdays and just 74% on Fridays. That gap is worth planning around.
A bit ahead of the Alaska Airlines network.
AS 100 arrived on time 85% of the time, versus 80% across the Alaska Airlines network.
Recent months have been rougher.
AS 100 arrived on time 83% of the time over the last three months in the data, compared with 93% in the three months before that.
The breakdown
- Mon82%(34 flights)
- Tue89%(36 flights)
- Wed100%(21 flights)
- Thu80%(35 flights)
- Fri74%(34 flights)
- Sat96%(25 flights)
- Sun83%(30 flights)
- 3–6 AM100%(22 flights)
- 9 AM–12 PM80%(74 flights)
- 12–3 PM87%(100 flights)
- 9 PM–12 AM79%(19 flights)
Jun 71% → Mar 93% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 71% | 14 |
| July 2025 | 67% | 21 |
| August 2025 | 91% | 21 |
| September 2025 | 92% | 25 |
| October 2025 | 100% | 25 |
| November 2025 | 90% | 10 |
| December 2025 | 90% | 30 |
| January 2026 | 76% | 29 |
| February 2026 | 81% | 26 |
| March 2026 | 93% | 14 |
- Departures on time
- 83%
- Diverted
- 0%
- Flights flown
- 215
- Months covered
- 10
Same route, other flights
Keep nerding
Based on 220 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.