Flight Reliability
AS 247 · Alaska Airlines
Seattle → Anchorage (SEA–ANC)88% of its flights flew this route. The rest (EWR–SEA) are included in these numbers.
- 80%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 0.6%
- Cancelled
- 2 min early
- Median arrival delay
Based on 166 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
AS 247 departing between 3–6 PM arrived on time 95% of the time, versus 78% between 6–9 PM.
Friday is doing you no favors.
AS 247 arrived on time 92% of the time on Mondays and just 69% on Fridays. That gap is worth planning around.
A bit ahead of the SEA–ANC route.
AS 247 arrived on time 80% of the time, versus 75% across the SEA–ANC route.
Recent months have been rougher.
AS 247 arrived on time 71% of the time over the last three months in the data, compared with 90% in the three months before that.
The breakdown
- Mon92%(25 flights)
- Tue87%(23 flights)
- Wed71%(24 flights)
- Thu72%(25 flights)
- Fri69%(26 flights)
- Sat88%(17 flights)
- Sun84%(25 flights)
- 9 AM–12 PM—(1 flights)
- 3–6 PM95%(19 flights)
- 6–9 PM78%(45 flights)
- 9 PM–12 AM78%(100 flights)
Oct 96% → May 74% on time
| Month | On-time percentage | Flights |
|---|---|---|
| October 2025 | 96% | 22 |
| January 2026 | 95% | 21 |
| February 2026 | 79% | 24 |
| March 2026 | 54% | 28 |
| April 2026 | 86% | 28 |
| May 2026 | 74% | 31 |
- Departures on time
- 78%
- Diverted
- 0%
- Flights flown
- 165
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 166 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.