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Flight Reliability

AS 85 · Alaska Airlines

Seattle → Anchorage (SEA–ANC)

77
Usually Fine
WanderNerd Reliability Score
84%
Arrive within 15 minutes
4 min early
Average arrival delay
3.7%
Cancelled
8 min early
Median arrival delay

Based on 191 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 87% of the time, against 83% between 6–9 AM.

Thursdays have been rough.

AS 85 arrived on time 96% of the time on Wednesdays and just 74% on Thursdays. That gap is worth planning around.

Better than the SEA–ANC route average.

AS 85 arrived on time 84% of the time, versus 75% across the SEA–ANC route.

A bit ahead of the Alaska Airlines network.

AS 85 arrived on time 84% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon86%(28 flights)
  • Tue89%(28 flights)
  • Wed96%(23 flights)
  • Thu74%(27 flights)
  • Fri82%(28 flights)
  • Sat80%(20 flights)
  • Sun80%(30 flights)
On-time by departure window
  • 6–9 AM83%(154 flights)
  • 6–9 PM87%(30 flights)
On-time trend by month
94%
May

Jun 79% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%28
July 202566%29
August 202590%29
November 2025100%15
January 202681%21
February 202691%23
March 202673%15
May 202694%18
Departures on time
85%
Diverted
0%
Flights flown
184
Months covered
9

Same route, other flights

Keep nerding

Based on 191 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.