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Flight Reliability

AS 423 · Alaska Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AS 423 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

77%
Arrive within 15 minutes
7 min
Average arrival delay
1.4%
Cancelled
1 min early
Median arrival delay

Based on 143 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon64%(22 flights)
  • Tue78%(18 flights)
  • Wed91%(22 flights)
  • Thu73%(22 flights)
  • Fri68%(19 flights)
  • Sat94%(16 flights)
  • Sun73%(22 flights)
On-time by departure window
  • 12–3 PM77%(35 flights)
  • 3–6 PM73%(26 flights)
  • 6–9 PM79%(14 flights)
  • 9 PM–12 AM77%(66 flights)
On-time trend by month
81%
Apr

Jun 63% → Apr 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%30
July 202576%29
August 202583%18
November 202582%11
March 202671%14
April 202681%21
Departures on time
77%
Diverted
0%
Flights flown
141
Months covered
10

Keep nerding

Based on 143 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.