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Flight Reliability

AS 660 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 660 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

85%
Arrive within 15 minutes
2 min early
Average arrival delay
2.5%
Cancelled
10 min early
Median arrival delay

Based on 279 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon90%(40 flights)
  • Tue84%(38 flights)
  • Wed90%(38 flights)
  • Thu79%(38 flights)
  • Fri90%(39 flights)
  • Sat88%(34 flights)
  • Sun75%(44 flights)
On-time by departure window
  • 12–3 PM88%(136 flights)
  • 3–6 PM82%(135 flights)
On-time trend by month
89%
May

Oct 91% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 202591%11
November 202582%54
December 202576%62
January 202690%58
February 202691%22
April 202689%18
May 202689%46
Departures on time
85%
Diverted
0.4%
Flights flown
271
Months covered
7

Keep nerding

Based on 279 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.