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Flight Reliability

AS 817 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 817 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

78%
Arrive within 15 minutes
2 min
Average arrival delay
0.7%
Cancelled
5 min early
Median arrival delay

Based on 297 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon74%(42 flights)
  • Tue71%(42 flights)
  • Wed78%(41 flights)
  • Thu88%(43 flights)
  • Fri74%(42 flights)
  • Sat76%(42 flights)
  • Sun86%(43 flights)
On-time by departure window
  • 12–3 AM85%(149 flights)
  • 9 AM–12 PM66%(80 flights)
  • 12–3 PM79%(66 flights)
On-time trend by month
94%
May

Jun 67% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%30
July 202571%31
August 202565%31
September 202583%30
October 202575%24
January 202697%30
February 202682%28
March 202668%31
April 202683%29
May 202694%31
Departures on time
69%
Diverted
0%
Flights flown
295
Months covered
10

Keep nerding

Based on 297 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.